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IceBox 25

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

Author: J. Ottenkamp


Edition: Model Aviation - 1997/11
Page Numbers: 50, 51, 52, 53, 54, 55, 58

IceBox 25 flight just milliseconds after launch Wing stab covered Polyspan top MylarTil bottom U s 1gm C ant spray Coupe rubber ries projected r motor log max Flying weight 80 grams minimum motor Construction BuIIF-up Covering/finish Polyspan/MyiarTM combination estin dating essoi hi ech twea mailer es Un very c ipSSO tee deal con previous itera ith ajifoils quil v drag strengtu rd wing sIr ii easy buik es safe rapid trir surface adjushnents e nhancing performai w #25 modest applications carbon fiber reduce both size number components sfinger type fuselage further reduces drag along airfoils British studies suggest about 12% increase efficiency over standard rolled booms boxes likesomething Wakefield gang has practiced years Last least all-plastic covering system has proven outstanding dozen airplanes squadron Details follow tease may kicker fence about ordering plan 50 Model Aviation TRUCTION First-time builders should arrange bit mentoring someone already familiar Coupe class construction disciplines shown drawing IceBox relatively puzzle-free build can emerge average workshop three days less Success project however demandsat very leastcareful selection wood access accurate gram scale economical use thin cyanoacrylate CyA glue Plasti-Stic unrivaled all-around applications particularly carbon-tobalsa bonds required See supplier list end article sourcing have modicum patience willingness accept joy putting things together process beckons will enjoyable blunders occur along way incorporate Select sheet stripwood low weight strength Rib stock should weigh 9-12 grams per sheet quarter-grain preferred Motor tube material A-grain about 10 grams starter sheet Sticks whippy medium-hard hard leading edges main spars Pylon frame medium soft Platforms other ancillaries also medium since capped plywood Carbon strip should cut sheets sanded lightly wiped clean MEK methyl ethyl ketone dope thinner prior laying up frames Rib templates complete spar notches traced cut thin plywood Cutoff pins will help register during production Plan should covered top bottom surfaces waxed paper positioned level pinaccepting surface such Celotex Rudder stabilizer wing should built flat possible parts fit closely no stress might come along later warp structures should laid down completely possible pins trapping major elements against other followed right-to-left application Plasti-Stic glue locating/pinning trailing edges stab wing carbon strip vertical facing should pulled along help create good bond As rib ends glued place carbon will also adhere between-nb areas final-glued air once structure has cured removed building surface Ditto bottom spars shown stick gussets various sheet elements full-span wing spar webbing Please note webbing has grain running spanwise vertically Motor tube Make initial blank about 14 inches 3 aforementioned Agrain sheet Dope side twice fullstrength nitrate dope Sand bit Now cut 26 inches wide 13 soak undoped side few minutes under very hot tap water pat paper towel coax around straight candle-waxed 3¼-inch dowel wrapping smoothly Ace bandage open seam should unskewed Allow dry 24-48 hours before peeking few minutes after bandage removed semi-tube should pop off form does slide standard business card along seam free Tack glue seam half-inch pull sheet off dowel Finish full line afterwards Sand lightly proceed stinger unit November 1997 51 boom locating disks ready insert motor tube balsa transition cone has roughed out Aluminum channel aids proper alignment Note carbon-fiber TE strip breather holes wing ribs webbing sheet fill alignment keys Motor tube covered grain vertical DT system uses fly line backing 20# test lanyard passes over stab top through pair aluminum tubing guides Note steep DT angle Full-Size Plans Availablesee page 165 0 -l 4 K H I I N r L #043 ICEBOX25 COUPE dEI VIA F r 11 V F 7/ f iN N p L Thin balsa plywood phenolic collar reinforcements first installed both ends motor tube Two hard-balsa disks center-drilled fit 21-inch Avia boom made up outer circle should fit inside collars quite closely After fiddling/test-fitting glue disks boom having first roughed up carbon bit emery board key move now attach boom/disk unit motor tube Use white glue Titebond operation whole works cradled section 90 aluminum channel aid accurate alignment Very slight variations perfect can tolerated best get right glue still workable pylon platforms wing tail nose block remaining components can now roughed out choose go Champion-type propeller blades excellent providing rocketlike initial climb now can also done Piece-of-cake scenario shape blank one-inch sheet knife/sandpaper bandsaw Drill 90 degrees prophangers X 3A2 Carve bottom first stated outlines progressively sanding finish Sandpaper wrapped around one-inch dowel pulled diagonally along cut will yield slight undercamber desired finish flat carve top surface average airfoil shape Let fingers sensing thickness blade other bits now nearing required shape time sanding party backyard driveway like work bright daylight glass surface #100 grit wrapped around x 2 block openers flat-sanding wing stab rudder contouring rest stuff indicated final dressing-down 220 helps fishmouth leading edges need minimal shaping Ditto trailing edges sand away too much anywhere Once pieces smoothed cut wing panels free breaks sand angled dihedral ribs cleanly test-fit tip panels required dimension may spot-glued air rechecked accuracy finally bonded take assemblies back workbench jig pin eyeball glue whilst immobile Covering finishing Wing Stabilizer upper outlines given two coats undiluted nitrate dope lightly sanded covered using thinner PolyspanTM Starline International product Polyspan applies much easier ordinary paper tissue adheres aggressively both stable waterproof once finished Try ityou wont go back messy brittle fading product yore 52 Model Aviation get Polyspan reasonably smooth Trim excess new razor blade two dope sand shrink right now because Step Two turn things upside down cover bottom wing stab both sides rudder Model Research Labs adhesive-backed iron-on 0015 Mylar Attach low heat set MonoKote equivalent covering iron shoe Gentle tugs will smooth way after tacking mid-rib ends corners lastly midpoints lengthwise undercamber line should also ironed fully Its sort slippery threehanded process manageable once confidence builds point method attempt preserve optimum airfoil performance wherein bottom surface smooth possible upper sort nappy self turbulating classic Lippisch style Furthermore end result stable relatively puncture-proof finish no tissue job can approach too heavy IceBox 25 strapped together fused ready action weighed 801 grains nothing robust motor tube should have couple coats nitrate thinned 50% before covering Polyspan grain vertical center/thrustline Seal seam overlap dope let dry spray two light coats Deft semi-gloss Clear Wood Finish contains lightweight fillers Also treat pylon platforms noseblock prop blades rest same medium Sand smooth above drying pile two waterthin coats nitrate wing stab upper areas set begin shrinking surfaces top bottom heat medium-high 2 3 covering iron shuffled back forth directly Polyspan Mylar coverings Wooiu slowly No warps should occur apply opposite twist between knees ElevonMixer -__ ELECTRONIC MIXER alavons v-tails flaps apoilers Ultraolmple salup installation Rugged mIcroprocessor based desIgn 100% stactmrJC logh raIl ability SImply corsiecto between ssrvoa receIver Features sarvo revarsing tour dlftarent mixing ralsa allow tailor lbs miner tIre needs modal WIll overdvlve asivos sit optIons era selected simple dIp swItch Made USA designed work wIth alt popular radIo systemsAU FM PCM Vary tow power consumption SIze 16 nO9 0 04 Weight O25oz Less radIo conoectom Part No OA $3095 tees oonnctors $3888 complete AccessorySwitch ACCESSORY SWITCH gives abilIty add onotf fond Ion channel eacrif IcIng chan nels abIlIty control servo AcceaaorySwltch la designed swItch 11030 node oplo3O amps max power dserstIon 01 300 watts Modern mlcroprnceeaor-oeeso 0 Acceaso rySmitch very simple astop InalsiHun ..ect between servo receIver chatmet choose oft poInts ealectad wIth simple dip switches troni IS different values LEO IndIcator help setup Unit ai*omaticatly turns off transmItter off Made USA designed work poplier radIo systems Small size tit n 055 o 04 WeIght 12 01 Low power conewoptlon Lass radio connector Pert No 0U 83455 Coroplafa syafanre sod otherprodrerfa available forplanaa cars boats Calf anIle details GlowDrlver ON-EOARO GLOW DRIVER makes startIng easier eater saps glow plug hot lust engine needs Mloroproc easor-haaad design simply connects batween throttle servo sod receiver Revavel hIs ussr-selectable off points Can easIly drive two-cylInder twin-angle models UnIt automatIcally turns ott wires transmitter la oft 100% electronIc Made USA designed work poprier radio systems Very smett size 17 x 12 0 04 Weight tt4oz Low power consunnpflon Comes wIth hatteny/plug wire lass cormectors cell plug citp Part No OA $3495 Dua I-Output ServoReverser DUAL-OUTPUT SERVO REVERSER gives older radios ability reveres direct Ion servo oper ation matang servo hatImw er mora converderi Provldas both normal reversed output using expensive V-harness Mod em mIcroprocessor-based design la 100% electronIc SemoReverser la very simple setup InatalHust connect between samoa receiver channel choose No switches set nothIng fuss withJust plug forget Made USA designed work simple Inexpensive AM FM PCM radio systems Vary small size 15 0 09 0 04 Weight 02Soz Low power consumption Less radio cousactor Part No 2U 52496 teas connacton 82890 comotale POUox312SCoePtraCtersm ess& two 512514-4543lOae- 7PM DatLv CTadd 5450 5&N per order CosToese Scentos FAX & Ante Ncurre 51255052 TX ree add 775% tax November 1997 53 H RD KEN K & K&B Aero & Marine Engines Rebuilt Repaired Updated K&B can make your engine like new again need send us K&B engine will repaired original parts Labor Charge $750 $1250 520453-3579 2100 College Drive Lake Havasu City AZ 86403 NOS lone ergire mxynOl wuiceoble due 10 uga urcord soylsala call below minding Ir angie KThe Worlds Finest Laser Cut Rubber Powered Free Flight Scale Kits 1431 Chaffee SuRe 413 Thuavlfle FL 32780 407 264-2488 worlds leader Laser Cut Model Aircraft Kits Herr kR features finest LASER CUT BALSA PARTS Contest Rubber Detailed Computer Diawn PIarrS Engineering Complete Hardware Paclc Authentic Watersilde Decal Molded Plastic Propeller Real Colored Tissue Corpomtion Light Weight Wheels Complete Step Step Building Instructions Please check local hobby dealer firsL kits available better hobby shops around world Full Line Catalog $200 Add $450 shipping kitOVerseas orders Sdd 20%FI residents add 6% sales taX Made USADealer Inquires invited holder add heat second hold release Works great have used technique Bostonians good results Should warps/surface offsets desired easily induced same manner reverse twist heat release Infinitely small adjustments can set will stay cause prublem can removed just easily Other stuff Heat-shrink motor tube covering wrinides appear Sand out other bits pieces Mask off wing other areas color accents spray Krylon paint two very light coats thank followed two Krylon Crystal Clear dont mind waiting extra day two shoot remaining hunks spray can Behr Hard Gloss Polyurethane extra permanence finish appears superprofessional Add AMA numbers vinyl press-on stock best owner labels club decals like Attach stab mount wing platforms rudder proper locations Allow 1/2 inch tilt stab right glide turn right side stab higher left viewed rear Prepare motor peg dethermalizer DT hardware like lanyard-over-stabilizer-from-front fuse system best ten-gram motor prop noseblock assemblies etc Because short nose moment Montreal-stop front end necessity dependable cheapest readymades John Morrill design listed under sources Prop blades should want store boughts available wide variety styles Champion nee SchwartzbachlBob White unit illustrated provides spectacular climb particularly under turbulent conditions fast ascent paramount success competition Final Assembly After work cocoon time flyer emerge final assembly install twelve-strand tengram motor Crockett hook up front Fix prop blades hub/noseblock Band wing RIC SERVICE AT ITS BEST ARADI~TLSales Service Anything Radio Controlled KMI 7420 Seven Mile Rd Northville Michigan 48167 Ph 248-486-4800 Fax 248-486-1603 Repairs Updates Custom Modifications Frequency Changes 6 Send Legal sized SAE 1997 Meter conversions ACE Airtronics Aristo-craft Cirrus BK Catalog containing lists R/C maintenance hints Futaba Hitec Heathkit Hobby Shack JR Kraft KGL KSE Kline Discover MCard ViSA COD KoPropo Pro-Line RCD Tower Hobbies World Engines & others UPS USMAJL FED EX etc Calibrated Equipment Quick Turnaround Walk-in daily service 800 am-500 pm Send E-Mail PTWaters@junocom 54 Model Aviation TIN& CENTRAL aORIPA Come Fly Central Florida Sport Flyers Offer500 X 100 Special s Daily Runway Weekly andClubhouse Monthly Visitor Rates CE AS ZOR tes AMA North Chartered ey Club d Recerve Complimentary Day Flying & Information Contact Chris Mahnken 407-330-3558 Ron Dicicco 904-532-0391 Visit Website http//rcaviationcom/oarcwgIcfsf/ stab platforms Tape pylon/wing rough location shown plan suspend airplane blades folded position trial balance point location Untape wing/pylon unit move until proper level suspension happens balance point 64% wing chord Mark pylon position fore aft roughen through covering emery board retape pylon minus wing aligning both rudder thrustline Tack-glue both pylon ends remove tape finish off fulllength bead Plasfi-Stic CyA Preflight Check proper right down thrust shown airplane cannot flown successfully See l4 inch incidence present between wing stabilizer Ensure prop blades fold flat noseblock key seats firmly Test pop-up DT function frictionfree conect angle 600 quick deployment Does airplane look way envisioned Wait day first airing out Free Flight hundred-yard dash Flying Start early calm day trimming/maiden flight Take few test glides adding subtracting incidence through use index-card shims first flight should 33% tums 125 counter Launch level drift resist urge shove aloft Observe smooth right turn under power precise prop stop fold right glide Initial stalls may indicate addition downthrust shim slightly less incidence both Disaster awaits overly anxious pilot Ditto person fails install light DT fuseeven low winds Both prototypes flew quite well beginning although pylon misaligmnent first caused power stalling time until piece trailing edge stock rudder induced minor amount right turn eliminate behavior though Coupe-class airplanes lack wads power nevertheless can sometimes benefit subtle changes thrust incidence indicated specs helpful enlist experienced observer during testing phase lest pesky misunderstood fight gremlins set good discourage unwary full tilt IceBox 25 will power up almost vertically before seffling very strong cruise especially thermal look good right glide trim goes work IceBox 25 its best sun out breeze moderate thermals moving through Its smallish proportions make generally top competitive performance definitely true November 1997 55 FREEsA MPL E AMA members & clubs TIMES THAT TWO WORLD CLASS MAGAZINES IN FULL COLOUR THROUGHOUT WITH FREE PLA NS EVERY ISSUE DEALER INQUIRIES WELCOME light-air machine might make longerwinged version early morning work machine-shop fluent removable tailboom two-piece wing associated hardware would improvement As IceBox 25 stands far however could pleased chore now study air-picking art change motors before flight generally push envelope out over opponents Questions assistance will cheerfully fielded hangar telephone Oldenkamp 1625 Fern St San Diego CA 92102 619 233-4837 Sources Starline International 6146 Cactus Wren Road Scottsdale AZ 85253 Tel 602 948-5798 Carbon Graphite sheet strips PolyspanrM covering winders FAI Model Supply Box 360 Sayre PA 18840 Tel 717 882-9873 Tan II rubber strip John Morrill Teeny-Torque Montreal front end units $1995 Momll winders winding stooges Crockett winding hooks Aerodyne 1924 East Edinger Santa Ana CA 93705 Tel 714 258-0805 Excellent nitrate dope Thinner Broad inventory AMA Old-Timer Free Flight kits plans materials accessories Fast service Model Research Labs MRL 25108 Marguerite #160 Mission Viejo CA 92692 Carbon fiber sheet Plasti-Stic CyA glue hon-on Mylar covering stock randomweave polyester tissue Kite Country 566 Horton Plaza San Diego CA 92101 Tel 619 233-9495 Avia Sport spiral-wrapped carbon tapered booms type G Force Skinny @325 inches length $1050 prox weight 8 gramsand very stiff Also Skyshark Response Zero tapered carbon boom 5mm 3mmstiff somewhat lighter Avia Sport other useful tubes booms various combinations aluminum/carbon glass epoxies well Superior Props 2412 Tucson Avenue Pensacola FL 32526 Tel 904 944-1972 Custom ready made balsa propellers front end hardware Prop used IceBox 25 nominal 17 diameter x 19 pitch Call check inventory Some finishing work required X-Acto Speedball Road Statesville NC 28677 Razor blades actually cut Stock #X670 100-count boxes Special-order hobby art-supply stores 58 Model Aviation 4WE ASK EACH INTERESTED INCLUDE YOUR NAME & ADDRESS MEMBER TO INCLUDE $200 FOR EACH MAGAZINE TO HELP COVER THE MAILING COST THE PLANS ARE WORTH MANY PHONE AMA NO TO DARE DISTRIBUTING/ AMI POBOX 521 CUMBERLAND MD 21501-0521 TEL 800 578 3273

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