moxo mUDon Rossi 15-powered FAt version ships need build seasons competition three classes Author suggests plans having suitable stable models Versatile flexible 450 FAI total projected area takes 1 5 25 engines Classes B well IT MAY BE quite timely re-evaluate apparent advantages competing various free flight events same model models identical quite simi lar size design Aside obvious benefits similar flight characteristics interchangeability model parts en gines present environmental situations offer growing influence regard example family car rapidly becoming smaller making task packing models contest trek con tinually complex Like models same size design would tend some what alleviate chore However multi purpose models capable competing class could considerably ease problem decreasing number models required compete immediate direct influence might current national emphasis being placed ecology econ omy Translated model builders language has simply resulted material shortages higher prices necessary items glue dope balsa wood engines timers asso ciated hardware As cost model building supplies skyrockets sprinkle little ever-present competition hobby dollar golf clubs fishing poles tennis racquets camping equipment etc reappraisal real value multi-purpose competition designs may well beneficial An additional slant worth multi-purpose model arises two models permissible per event rule As result rule die-hard competitors feel stripped naked start contest season least two deep events Never fear am going hypocritical enough propose good multi-purpose model would permit highly competitive three differ ent events whole season Nor will tax intelligence further suggesting can now forget about building other five models would normally re quire However feel sensible compromise somewhere between six such foura front line model three events multi purpose model utilized emer gency backup three events threeby utilizing front line multi-purpose model two events engine switching techniques second front line model third event plus backup multi-purpose model cover three events again sensible combi nations further con sider possibilities should front line backup models same competitive multi-purpose design concept affords greater flexibility Max-A-Million 450 con ceived multi-purpose mind has proven versatile flexi ble FAI size total projected area will comfortably accept engine sizes 15 25 thereby covering both Class B well Per plans presented can built weigh out 20-22 ounces two AMA Classes leaded-up weigh 265 ounces FAI Wing stab con structions directed Monokote Solar Film type coverings durability fuselage also designed take its lumps Yet simple material substitutions slight construction deviations have produced very light Japanese tissuecovered trophy-winning A/B models have weighed out 16-18 ounces weight-reducing options quite obvious list few would include following wing stab revisions delete wing leading edge planking replace t wing stab ribs 3/32 sheet designated 3/32 sheet ribs made 1/16 sheet 3/32 sq spruce wing turbulators can balsa solid balsa tip plates can replaced conventional slanted rib construction cover Japanese tissue place plastic types Fuselage weight reduction changes could include substitution /8 spruce longerons balsa careful selection lightweight sheet balsa stock fuselage pylon sheeted surfaces Therefore before starting construction carefully analyze plan ultimate particular requirements construct model models accordingly Wing Select sheet balsa wing ribs thickness weight rela tive whether intend build multi-purpose model FAI lighter A/B model per above sug gestions Cut out ribs indicated cut dotted line nose rib going plank area Conventionally, pin plans inner panel /s X TE lower spars 3/16 /8 X /8 Tip panels utilize same stock sizes however note both bottom spars get tapered 3/16 tip TE gets tapered ing off thick front edge After notching TE match rib thickness cement ribs place except dihedral polyhedral ribs W 1 W3 Add s soft balsa tip block time simpler ex cess material trimmed block until later wish add l/16 X /8 diagonals may 18 Model Aviation easily time except omit either side polyhedral breaks now diagonals lie top lower spar also cemented Origi nally added model slated especially FAI use method adding little strength needed extra weight added somewhere anyway structurally would probably beneficial very light wing add top spars turbulators yet lesser task added after polyhedral dihedral set Remove wing tip panels plans re-cement joints Carve bottom tip blocks across end section diagonal indicated finish trim top until after top spars turbulators have added Trim cement tip panels inner panels still pinned plans blocking up 3 poly hedral angle Add 1/16 plywood poly hedral braces WD WE shown follow W3 rib /s top spar 3/32 sq turbulators may now cemented place tip panels cement has set remove two wing halves plans re cement remaining joints prefer finish trim sand wing tips stage easier manipu late one-half wing rather entire wing Trim align two wing halves --p U-__ WIWI 7j king up 1 dihedral angle cement securely Cement place 1/16 plywood dihedral braces WA WB 1/32 plywood braces WC follow center rib WI thoroughly drying can start adding remaining /s top spars 3/32 sq turbu lators inner panels After removing one-piece wing plans add appropriate rib gussets remaining diagonals adjoining polyhedral breaks 1/16 sheet balsa leading edge planking plus center sec tion planking indicated Carve away excess balsa finish sand 400 grit sandpaper Sand very smooth surface intending use miracle plastic film coverings prefer use trans parent Monokote appears lighter less brittle opaque colors Solar Film find provide less surface tension Monokote will suffice Stabilizer Obviously same basic construction procedure followed per wing may seem though building fifth wing panel proceed Cut 13 stab ribs selected balsa sheet stock Pin LE3/16 x TE dual/8 bottom spars place plans Notch TE cement ribs place Add ocks follow continued page 20 wAIt L WI~3 U- mn~m Hany *SA U inUI III. S tt IiLTI PURPOSE B OR FA1 GORIEST FREE FLIQ4T OESIGFd September1975 19 Class A/B version powered Super Tigre 23 picture Nate AMA numbers 4yf Max-A-Million 450 1/8 X 3/16 top spar 3/32 turbula tors Add optional 1/16 X I/s diago nals desired dry remove assembled stab plans re cement joints Add appropriate gussets 1/16 sheet balsa planking Notch front underside three center ribs add 1/8 X balsa spruce stiffener shown Carve tip blocks same manner wing finish sand 400 grit sandpaper Cover finished stab match wing covering material Bend front rear stab hooks heavy duty paper clips soft #20 gauge baling wire epoxy place Fuselage chore hit Out ordinary probably havent con structed built-up pylon since last Zipper Sailplane assure considerably elementary Build pylon frame directly plans pinning down 1/8 X 3/s spruce wing retaining rail Follow cementing front rear /8 posts 1/8 K om keel center post Cement /8 sheet gussets place right side vertical /8 X center post edge atop constructed pylon core Cement /8 sheet right-side contour parts P1 P2 tions shown Complete right side construction trimming 8 strips fit vertically between top bottom contour parts indicated will serve solid back up studding sheet planking added later dry remove sembly plans cement left side uprights contour parts make pylon symmetrical add plank ing yet Piece together wing platform medium hard /8 sheet balsa add /8 plywood spruce strips front rear added strength have yet knock corner off wing platform since started doing Cement fore aft /8 sq spruce side rails top cement sub-assembly proper align ment recently constructed pylon sembly Set aside await its position top fuselage box fuselage just box built upside down over plans noted building light weight version select quite hard /s sheet balsa fuselage top will become foundation pylon attachment fuselage Pin top plans cement 1/8 sq spruce longerons atop perimeter shown Add /8 sheet formers secure front /8 sheet doublers between formers Fl F5 epoxy Cut both fuselage sides same piece 3/32 sheet balsa uniformity cement securely place Add bottom /8 sq spruce longerons care fully trim cement /8 sheet side doublers place between formers Fl F2 Permit cement dry thor oughly carefully remove threesided fuselage box plans time fabricate fit fuel tank place establish fuel shut-off location use modified Perfect #7 tank converted camera timer necessities may possibly wish insert favorite tank-timer arrange ment modelers seem have some personally tailored combo prefer After internal items completed button up insides 3/32 sheet bottom cap Press #4-40 blind nuts 5/32 drilled holes 3/16 plywood firewall assemble aluminum mounting plate four attaching screws fuselage front end also de signed match up standard Super Tigre radial mount use S/T 15 19 23 Fit epoxy assembly securely front fuse lage box Before epoxy completely hardens remove screws aluminum plate prevent breaking screws should hardened epoxy freeze place As will need added weight FAL use have quite successful adding Tatone beam mount Rossi 15 out front addition aluminum mounting plate Also optional wire skid recommended can added noted plans Additional weight re quired later may stuffed fuse lage box through fuel timer opening Any counter-balance weight required tail can added through continued page 71 20 Model Aviation Close-up plumbing Fuel enters tank pressurized middle line engine lower line top line flood-oft pinched shut timerwhich also operates OT stab FAI version left must leaded up 265 ounces Can built weigh out 20-22 ounces A/B Structured Monokote Solar Film Japanese tissue jobs 16-18 ounces Max-A-Million continued page 20 eter hole drilled top just rearward stab platform Fabricate complete rudder lower fin medium 3/16 sheet cement place Add 3/32 plywood stab platform 3/32 sheet balsa cap Trim sand assembly completely 400 grit sandpaper locate pylon assembly fuselage temporarily assemble engine timer rubber-band stab place Teeter assembly round pencil laid diagonally across corner table Rubber-band wing loose pylon assembly slide along fuselage top until horizontal balance point determined carefully align epoxy pylon assembly securely top fuselage box balance point should locate about 3 forward TE wing Disassemble wing stab remove hardware fuselage Plank pylon area 1/16 sheet running wood grain vertically Notch pylon front rear wing retaining hooks Sand entire completed fuselage pre-dope status Cut auto-rudder trim tab out rudder area re-install thin nylon R/C hinge material Sig packages suit able material Auto rudder hardware detail shown plans Install bent aluminum tubing D-T string come out left side fuselage Complete fuselage either covering doped-on colored tissue finish epoxy resin follow Hobby-Poxy K&B Super Poxy paints Start adding final hardware rubber band hooks D-T A/R string guides short lengths 1/16 ID aluminum tubing snuffer tube timer A/R timer lever etc Completely assemble model cement proper wing stab align ment keys using ths 1/16 X Vs spruce Flying have long since abandoned conventional new model flight testing methods after smashing up too models because low speed stalls low power prop backwards horizontal hand launch exchanged very success fully VTO full power go broke method 2-3 second engine run giving full power VTO launch hauls model directly away ground faster does permit time return under power engine quits further away terra firma model transits glide realisti cally traveling normal fly ing speed After first flight probably quite close final trim skipped low-speed test procedure normal competiton fly ing mode model anyway main ingredient approach proper model preparation before first flight Obviously cannot grab nOOPL MORE wi/AlT laSter n same power1 ep~eeted ~3e G'e\\e ~jedoo94o~ V del off work bench zap out test site some reasonable idea model should perform Care ful eyeballing checking factors affecting power-on flight characteristics required something should have doing anyway As right power-right glide pattern suggested insure horizontal stabilizer perfectly flat steam approximate i/s washout wing tip left inner wing panel flat right inner wing panel corporate approximate 3/32 washin rudder tab should adjusted about 1/16 right engine sidethrust zero possibly some slight left RC Pylon Racing continued page 31 real proud have two juniors now flying district Steve Barrett age 12 Mark Harter age 14 Steves first year racing flying real well QM event plans enter F-I Sportsman event Mark has racing three seasons flying best QM F-I event Southern California District racing season started district April 19-20 Sepulveda Basin Seventy flyers entered F-I race entered Standard Class Expert Class Kent Nogy Char lie Shaw Terry Prather won Expert Class Terry turning fastest time 1159 Bob Johannes Steve Sica M Hoem won Standard Class Bob turning fastest time 12 11 Great Bakersfield Air Races 100 entrants various parts United Stateseven Mexico Japan nationally important meet lived up expectations Sponsored MAN BARKS held May 17-18 contest strong organization procedures wit nessed some truly great individual perform ances smoke cleared three-way tie first place Jim Jensen fastest time 1171 Bill Preis 1198 Joe Foster 1172 Other fast times Terry Prather 1171 Ed Hotelling 1202 52 entrants Standard Scott Johnson 1288 Gary Hawk 1294 Dennis Osborn muBd 5 3 54304 6364354 747678504 848688654 949-69798 104106854 11-4116118 RC 124 t25 26150 GRISH BROS ST JOHN ND ANA 46373 thrust 1/16 shim under stab TE might wise start little stall glide still better negative dive Hand gliding tests can also determine needed satisfied homework has completed set fuel shut-off 2-3 second engine run VTO launch under full power prop front wards Normally final trim completed few screwdriver adjustments A/R tab power glide little stab tilt up right side hope find model design rewarding have Good luck sic em! 1282 Rudy Formanek second race 1287 Angelo Sanchez 1377 fastest time Standard set Doug Ruble flying Tiger-powered Prather Toni Visalia Ca Doug 17 years old has racing Quickie 500 year second F-I racehe turned 12 14 Hes boy watch out younger brother also starting out Nice young men father likes help California District sets another safety stand ard Chain link barrier placed around lap counters #1 flagmen Also chain link L shaped barriers around #2 & #3 flagman addition larger wood pylons Another safety precaution no spectators allowed down-wind starting line Congratula tions Spickler crew always thinking about new ways give us safe race free raffle workers flyers ticket for $1500 mer chandise including Kraft Radio items donated Sixty workers came help worked 1 hour shifts telephone com munications between pylons starting line desk desk could hear cuts called communications desk starting line receive cuts called flips switch correct lap counter information relays Cuts shown both lap counters #1 Pylon makes easier callers pick up Tiger X-40 predominant engine Prather Little Toni LRIA pre dominant airplanes Ed Hotelling Bill Pries using K&B engines Entries also came Japan Mexico Fla NC Ga Ill Idaho Ariz Md Va September 1975 71
Edition: Model Aviation - 1975/09
Page Numbers: 18, 19, 20, 71
moxo mUDon Rossi 15-powered FAt version ships need build seasons competition three classes Author suggests plans having suitable stable models Versatile flexible 450 FAI total projected area takes 1 5 25 engines Classes B well IT MAY BE quite timely re-evaluate apparent advantages competing various free flight events same model models identical quite simi lar size design Aside obvious benefits similar flight characteristics interchangeability model parts en gines present environmental situations offer growing influence regard example family car rapidly becoming smaller making task packing models contest trek con tinually complex Like models same size design would tend some what alleviate chore However multi purpose models capable competing class could considerably ease problem decreasing number models required compete immediate direct influence might current national emphasis being placed ecology econ omy Translated model builders language has simply resulted material shortages higher prices necessary items glue dope balsa wood engines timers asso ciated hardware As cost model building supplies skyrockets sprinkle little ever-present competition hobby dollar golf clubs fishing poles tennis racquets camping equipment etc reappraisal real value multi-purpose competition designs may well beneficial An additional slant worth multi-purpose model arises two models permissible per event rule As result rule die-hard competitors feel stripped naked start contest season least two deep events Never fear am going hypocritical enough propose good multi-purpose model would permit highly competitive three differ ent events whole season Nor will tax intelligence further suggesting can now forget about building other five models would normally re quire However feel sensible compromise somewhere between six such foura front line model three events multi purpose model utilized emer gency backup three events threeby utilizing front line multi-purpose model two events engine switching techniques second front line model third event plus backup multi-purpose model cover three events again sensible combi nations further con sider possibilities should front line backup models same competitive multi-purpose design concept affords greater flexibility Max-A-Million 450 con ceived multi-purpose mind has proven versatile flexi ble FAI size total projected area will comfortably accept engine sizes 15 25 thereby covering both Class B well Per plans presented can built weigh out 20-22 ounces two AMA Classes leaded-up weigh 265 ounces FAI Wing stab con structions directed Monokote Solar Film type coverings durability fuselage also designed take its lumps Yet simple material substitutions slight construction deviations have produced very light Japanese tissuecovered trophy-winning A/B models have weighed out 16-18 ounces weight-reducing options quite obvious list few would include following wing stab revisions delete wing leading edge planking replace t wing stab ribs 3/32 sheet designated 3/32 sheet ribs made 1/16 sheet 3/32 sq spruce wing turbulators can balsa solid balsa tip plates can replaced conventional slanted rib construction cover Japanese tissue place plastic types Fuselage weight reduction changes could include substitution /8 spruce longerons balsa careful selection lightweight sheet balsa stock fuselage pylon sheeted surfaces Therefore before starting construction carefully analyze plan ultimate particular requirements construct model models accordingly Wing Select sheet balsa wing ribs thickness weight rela tive whether intend build multi-purpose model FAI lighter A/B model per above sug gestions Cut out ribs indicated cut dotted line nose rib going plank area Conventionally, pin plans inner panel /s X TE lower spars 3/16 /8 X /8 Tip panels utilize same stock sizes however note both bottom spars get tapered 3/16 tip TE gets tapered ing off thick front edge After notching TE match rib thickness cement ribs place except dihedral polyhedral ribs W 1 W3 Add s soft balsa tip block time simpler ex cess material trimmed block until later wish add l/16 X /8 diagonals may 18 Model Aviation easily time except omit either side polyhedral breaks now diagonals lie top lower spar also cemented Origi nally added model slated especially FAI use method adding little strength needed extra weight added somewhere anyway structurally would probably beneficial very light wing add top spars turbulators yet lesser task added after polyhedral dihedral set Remove wing tip panels plans re-cement joints Carve bottom tip blocks across end section diagonal indicated finish trim top until after top spars turbulators have added Trim cement tip panels inner panels still pinned plans blocking up 3 poly hedral angle Add 1/16 plywood poly hedral braces WD WE shown follow W3 rib /s top spar 3/32 sq turbulators may now cemented place tip panels cement has set remove two wing halves plans re cement remaining joints prefer finish trim sand wing tips stage easier manipu late one-half wing rather entire wing Trim align two wing halves --p U-__ WIWI 7j king up 1 dihedral angle cement securely Cement place 1/16 plywood dihedral braces WA WB 1/32 plywood braces WC follow center rib WI thoroughly drying can start adding remaining /s top spars 3/32 sq turbu lators inner panels After removing one-piece wing plans add appropriate rib gussets remaining diagonals adjoining polyhedral breaks 1/16 sheet balsa leading edge planking plus center sec tion planking indicated Carve away excess balsa finish sand 400 grit sandpaper Sand very smooth surface intending use miracle plastic film coverings prefer use trans parent Monokote appears lighter less brittle opaque colors Solar Film find provide less surface tension Monokote will suffice Stabilizer Obviously same basic construction procedure followed per wing may seem though building fifth wing panel proceed Cut 13 stab ribs selected balsa sheet stock Pin LE3/16 x TE dual/8 bottom spars place plans Notch TE cement ribs place Add ocks follow continued page 20 wAIt L WI~3 U- mn~m Hany *SA U inUI III. S tt IiLTI PURPOSE B OR FA1 GORIEST FREE FLIQ4T OESIGFd September1975 19 Class A/B version powered Super Tigre 23 picture Nate AMA numbers 4yf Max-A-Million 450 1/8 X 3/16 top spar 3/32 turbula tors Add optional 1/16 X I/s diago nals desired dry remove assembled stab plans re cement joints Add appropriate gussets 1/16 sheet balsa planking Notch front underside three center ribs add 1/8 X balsa spruce stiffener shown Carve tip blocks same manner wing finish sand 400 grit sandpaper Cover finished stab match wing covering material Bend front rear stab hooks heavy duty paper clips soft #20 gauge baling wire epoxy place Fuselage chore hit Out ordinary probably havent con structed built-up pylon since last Zipper Sailplane assure considerably elementary Build pylon frame directly plans pinning down 1/8 X 3/s spruce wing retaining rail Follow cementing front rear /8 posts 1/8 K om keel center post Cement /8 sheet gussets place right side vertical /8 X center post edge atop constructed pylon core Cement /8 sheet right-side contour parts P1 P2 tions shown Complete right side construction trimming 8 strips fit vertically between top bottom contour parts indicated will serve solid back up studding sheet planking added later dry remove sembly plans cement left side uprights contour parts make pylon symmetrical add plank ing yet Piece together wing platform medium hard /8 sheet balsa add /8 plywood spruce strips front rear added strength have yet knock corner off wing platform since started doing Cement fore aft /8 sq spruce side rails top cement sub-assembly proper align ment recently constructed pylon sembly Set aside await its position top fuselage box fuselage just box built upside down over plans noted building light weight version select quite hard /s sheet balsa fuselage top will become foundation pylon attachment fuselage Pin top plans cement 1/8 sq spruce longerons atop perimeter shown Add /8 sheet formers secure front /8 sheet doublers between formers Fl F5 epoxy Cut both fuselage sides same piece 3/32 sheet balsa uniformity cement securely place Add bottom /8 sq spruce longerons care fully trim cement /8 sheet side doublers place between formers Fl F2 Permit cement dry thor oughly carefully remove threesided fuselage box plans time fabricate fit fuel tank place establish fuel shut-off location use modified Perfect #7 tank converted camera timer necessities may possibly wish insert favorite tank-timer arrange ment modelers seem have some personally tailored combo prefer After internal items completed button up insides 3/32 sheet bottom cap Press #4-40 blind nuts 5/32 drilled holes 3/16 plywood firewall assemble aluminum mounting plate four attaching screws fuselage front end also de signed match up standard Super Tigre radial mount use S/T 15 19 23 Fit epoxy assembly securely front fuse lage box Before epoxy completely hardens remove screws aluminum plate prevent breaking screws should hardened epoxy freeze place As will need added weight FAL use have quite successful adding Tatone beam mount Rossi 15 out front addition aluminum mounting plate Also optional wire skid recommended can added noted plans Additional weight re quired later may stuffed fuse lage box through fuel timer opening Any counter-balance weight required tail can added through continued page 71 20 Model Aviation Close-up plumbing Fuel enters tank pressurized middle line engine lower line top line flood-oft pinched shut timerwhich also operates OT stab FAI version left must leaded up 265 ounces Can built weigh out 20-22 ounces A/B Structured Monokote Solar Film Japanese tissue jobs 16-18 ounces Max-A-Million continued page 20 eter hole drilled top just rearward stab platform Fabricate complete rudder lower fin medium 3/16 sheet cement place Add 3/32 plywood stab platform 3/32 sheet balsa cap Trim sand assembly completely 400 grit sandpaper locate pylon assembly fuselage temporarily assemble engine timer rubber-band stab place Teeter assembly round pencil laid diagonally across corner table Rubber-band wing loose pylon assembly slide along fuselage top until horizontal balance point determined carefully align epoxy pylon assembly securely top fuselage box balance point should locate about 3 forward TE wing Disassemble wing stab remove hardware fuselage Plank pylon area 1/16 sheet running wood grain vertically Notch pylon front rear wing retaining hooks Sand entire completed fuselage pre-dope status Cut auto-rudder trim tab out rudder area re-install thin nylon R/C hinge material Sig packages suit able material Auto rudder hardware detail shown plans Install bent aluminum tubing D-T string come out left side fuselage Complete fuselage either covering doped-on colored tissue finish epoxy resin follow Hobby-Poxy K&B Super Poxy paints Start adding final hardware rubber band hooks D-T A/R string guides short lengths 1/16 ID aluminum tubing snuffer tube timer A/R timer lever etc Completely assemble model cement proper wing stab align ment keys using ths 1/16 X Vs spruce Flying have long since abandoned conventional new model flight testing methods after smashing up too models because low speed stalls low power prop backwards horizontal hand launch exchanged very success fully VTO full power go broke method 2-3 second engine run giving full power VTO launch hauls model directly away ground faster does permit time return under power engine quits further away terra firma model transits glide realisti cally traveling normal fly ing speed After first flight probably quite close final trim skipped low-speed test procedure normal competiton fly ing mode model anyway main ingredient approach proper model preparation before first flight Obviously cannot grab nOOPL MORE wi/AlT laSter n same power1 ep~eeted ~3e G'e\\e ~jedoo94o~ V del off work bench zap out test site some reasonable idea model should perform Care ful eyeballing checking factors affecting power-on flight characteristics required something should have doing anyway As right power-right glide pattern suggested insure horizontal stabilizer perfectly flat steam approximate i/s washout wing tip left inner wing panel flat right inner wing panel corporate approximate 3/32 washin rudder tab should adjusted about 1/16 right engine sidethrust zero possibly some slight left RC Pylon Racing continued page 31 real proud have two juniors now flying district Steve Barrett age 12 Mark Harter age 14 Steves first year racing flying real well QM event plans enter F-I Sportsman event Mark has racing three seasons flying best QM F-I event Southern California District racing season started district April 19-20 Sepulveda Basin Seventy flyers entered F-I race entered Standard Class Expert Class Kent Nogy Char lie Shaw Terry Prather won Expert Class Terry turning fastest time 1159 Bob Johannes Steve Sica M Hoem won Standard Class Bob turning fastest time 12 11 Great Bakersfield Air Races 100 entrants various parts United Stateseven Mexico Japan nationally important meet lived up expectations Sponsored MAN BARKS held May 17-18 contest strong organization procedures wit nessed some truly great individual perform ances smoke cleared three-way tie first place Jim Jensen fastest time 1171 Bill Preis 1198 Joe Foster 1172 Other fast times Terry Prather 1171 Ed Hotelling 1202 52 entrants Standard Scott Johnson 1288 Gary Hawk 1294 Dennis Osborn muBd 5 3 54304 6364354 747678504 848688654 949-69798 104106854 11-4116118 RC 124 t25 26150 GRISH BROS ST JOHN ND ANA 46373 thrust 1/16 shim under stab TE might wise start little stall glide still better negative dive Hand gliding tests can also determine needed satisfied homework has completed set fuel shut-off 2-3 second engine run VTO launch under full power prop front wards Normally final trim completed few screwdriver adjustments A/R tab power glide little stab tilt up right side hope find model design rewarding have Good luck sic em! 1282 Rudy Formanek second race 1287 Angelo Sanchez 1377 fastest time Standard set Doug Ruble flying Tiger-powered Prather Toni Visalia Ca Doug 17 years old has racing Quickie 500 year second F-I racehe turned 12 14 Hes boy watch out younger brother also starting out Nice young men father likes help California District sets another safety stand ard Chain link barrier placed around lap counters #1 flagmen Also chain link L shaped barriers around #2 & #3 flagman addition larger wood pylons Another safety precaution no spectators allowed down-wind starting line Congratula tions Spickler crew always thinking about new ways give us safe race free raffle workers flyers ticket for $1500 mer chandise including Kraft Radio items donated Sixty workers came help worked 1 hour shifts telephone com munications between pylons starting line desk desk could hear cuts called communications desk starting line receive cuts called flips switch correct lap counter information relays Cuts shown both lap counters #1 Pylon makes easier callers pick up Tiger X-40 predominant engine Prather Little Toni LRIA pre dominant airplanes Ed Hotelling Bill Pries using K&B engines Entries also came Japan Mexico Fla NC Ga Ill Idaho Ariz Md Va September 1975 71
Edition: Model Aviation - 1975/09
Page Numbers: 18, 19, 20, 71
moxo mUDon Rossi 15-powered FAt version ships need build seasons competition three classes Author suggests plans having suitable stable models Versatile flexible 450 FAI total projected area takes 1 5 25 engines Classes B well IT MAY BE quite timely re-evaluate apparent advantages competing various free flight events same model models identical quite simi lar size design Aside obvious benefits similar flight characteristics interchangeability model parts en gines present environmental situations offer growing influence regard example family car rapidly becoming smaller making task packing models contest trek con tinually complex Like models same size design would tend some what alleviate chore However multi purpose models capable competing class could considerably ease problem decreasing number models required compete immediate direct influence might current national emphasis being placed ecology econ omy Translated model builders language has simply resulted material shortages higher prices necessary items glue dope balsa wood engines timers asso ciated hardware As cost model building supplies skyrockets sprinkle little ever-present competition hobby dollar golf clubs fishing poles tennis racquets camping equipment etc reappraisal real value multi-purpose competition designs may well beneficial An additional slant worth multi-purpose model arises two models permissible per event rule As result rule die-hard competitors feel stripped naked start contest season least two deep events Never fear am going hypocritical enough propose good multi-purpose model would permit highly competitive three differ ent events whole season Nor will tax intelligence further suggesting can now forget about building other five models would normally re quire However feel sensible compromise somewhere between six such foura front line model three events multi purpose model utilized emer gency backup three events threeby utilizing front line multi-purpose model two events engine switching techniques second front line model third event plus backup multi-purpose model cover three events again sensible combi nations further con sider possibilities should front line backup models same competitive multi-purpose design concept affords greater flexibility Max-A-Million 450 con ceived multi-purpose mind has proven versatile flexi ble FAI size total projected area will comfortably accept engine sizes 15 25 thereby covering both Class B well Per plans presented can built weigh out 20-22 ounces two AMA Classes leaded-up weigh 265 ounces FAI Wing stab con structions directed Monokote Solar Film type coverings durability fuselage also designed take its lumps Yet simple material substitutions slight construction deviations have produced very light Japanese tissuecovered trophy-winning A/B models have weighed out 16-18 ounces weight-reducing options quite obvious list few would include following wing stab revisions delete wing leading edge planking replace t wing stab ribs 3/32 sheet designated 3/32 sheet ribs made 1/16 sheet 3/32 sq spruce wing turbulators can balsa solid balsa tip plates can replaced conventional slanted rib construction cover Japanese tissue place plastic types Fuselage weight reduction changes could include substitution /8 spruce longerons balsa careful selection lightweight sheet balsa stock fuselage pylon sheeted surfaces Therefore before starting construction carefully analyze plan ultimate particular requirements construct model models accordingly Wing Select sheet balsa wing ribs thickness weight rela tive whether intend build multi-purpose model FAI lighter A/B model per above sug gestions Cut out ribs indicated cut dotted line nose rib going plank area Conventionally, pin plans inner panel /s X TE lower spars 3/16 /8 X /8 Tip panels utilize same stock sizes however note both bottom spars get tapered 3/16 tip TE gets tapered ing off thick front edge After notching TE match rib thickness cement ribs place except dihedral polyhedral ribs W 1 W3 Add s soft balsa tip block time simpler ex cess material trimmed block until later wish add l/16 X /8 diagonals may 18 Model Aviation easily time except omit either side polyhedral breaks now diagonals lie top lower spar also cemented Origi nally added model slated especially FAI use method adding little strength needed extra weight added somewhere anyway structurally would probably beneficial very light wing add top spars turbulators yet lesser task added after polyhedral dihedral set Remove wing tip panels plans re-cement joints Carve bottom tip blocks across end section diagonal indicated finish trim top until after top spars turbulators have added Trim cement tip panels inner panels still pinned plans blocking up 3 poly hedral angle Add 1/16 plywood poly hedral braces WD WE shown follow W3 rib /s top spar 3/32 sq turbulators may now cemented place tip panels cement has set remove two wing halves plans re cement remaining joints prefer finish trim sand wing tips stage easier manipu late one-half wing rather entire wing Trim align two wing halves --p U-__ WIWI 7j king up 1 dihedral angle cement securely Cement place 1/16 plywood dihedral braces WA WB 1/32 plywood braces WC follow center rib WI thoroughly drying can start adding remaining /s top spars 3/32 sq turbu lators inner panels After removing one-piece wing plans add appropriate rib gussets remaining diagonals adjoining polyhedral breaks 1/16 sheet balsa leading edge planking plus center sec tion planking indicated Carve away excess balsa finish sand 400 grit sandpaper Sand very smooth surface intending use miracle plastic film coverings prefer use trans parent Monokote appears lighter less brittle opaque colors Solar Film find provide less surface tension Monokote will suffice Stabilizer Obviously same basic construction procedure followed per wing may seem though building fifth wing panel proceed Cut 13 stab ribs selected balsa sheet stock Pin LE3/16 x TE dual/8 bottom spars place plans Notch TE cement ribs place Add ocks follow continued page 20 wAIt L WI~3 U- mn~m Hany *SA U inUI III. S tt IiLTI PURPOSE B OR FA1 GORIEST FREE FLIQ4T OESIGFd September1975 19 Class A/B version powered Super Tigre 23 picture Nate AMA numbers 4yf Max-A-Million 450 1/8 X 3/16 top spar 3/32 turbula tors Add optional 1/16 X I/s diago nals desired dry remove assembled stab plans re cement joints Add appropriate gussets 1/16 sheet balsa planking Notch front underside three center ribs add 1/8 X balsa spruce stiffener shown Carve tip blocks same manner wing finish sand 400 grit sandpaper Cover finished stab match wing covering material Bend front rear stab hooks heavy duty paper clips soft #20 gauge baling wire epoxy place Fuselage chore hit Out ordinary probably havent con structed built-up pylon since last Zipper Sailplane assure considerably elementary Build pylon frame directly plans pinning down 1/8 X 3/s spruce wing retaining rail Follow cementing front rear /8 posts 1/8 K om keel center post Cement /8 sheet gussets place right side vertical /8 X center post edge atop constructed pylon core Cement /8 sheet right-side contour parts P1 P2 tions shown Complete right side construction trimming 8 strips fit vertically between top bottom contour parts indicated will serve solid back up studding sheet planking added later dry remove sembly plans cement left side uprights contour parts make pylon symmetrical add plank ing yet Piece together wing platform medium hard /8 sheet balsa add /8 plywood spruce strips front rear added strength have yet knock corner off wing platform since started doing Cement fore aft /8 sq spruce side rails top cement sub-assembly proper align ment recently constructed pylon sembly Set aside await its position top fuselage box fuselage just box built upside down over plans noted building light weight version select quite hard /s sheet balsa fuselage top will become foundation pylon attachment fuselage Pin top plans cement 1/8 sq spruce longerons atop perimeter shown Add /8 sheet formers secure front /8 sheet doublers between formers Fl F5 epoxy Cut both fuselage sides same piece 3/32 sheet balsa uniformity cement securely place Add bottom /8 sq spruce longerons care fully trim cement /8 sheet side doublers place between formers Fl F2 Permit cement dry thor oughly carefully remove threesided fuselage box plans time fabricate fit fuel tank place establish fuel shut-off location use modified Perfect #7 tank converted camera timer necessities may possibly wish insert favorite tank-timer arrange ment modelers seem have some personally tailored combo prefer After internal items completed button up insides 3/32 sheet bottom cap Press #4-40 blind nuts 5/32 drilled holes 3/16 plywood firewall assemble aluminum mounting plate four attaching screws fuselage front end also de signed match up standard Super Tigre radial mount use S/T 15 19 23 Fit epoxy assembly securely front fuse lage box Before epoxy completely hardens remove screws aluminum plate prevent breaking screws should hardened epoxy freeze place As will need added weight FAL use have quite successful adding Tatone beam mount Rossi 15 out front addition aluminum mounting plate Also optional wire skid recommended can added noted plans Additional weight re quired later may stuffed fuse lage box through fuel timer opening Any counter-balance weight required tail can added through continued page 71 20 Model Aviation Close-up plumbing Fuel enters tank pressurized middle line engine lower line top line flood-oft pinched shut timerwhich also operates OT stab FAI version left must leaded up 265 ounces Can built weigh out 20-22 ounces A/B Structured Monokote Solar Film Japanese tissue jobs 16-18 ounces Max-A-Million continued page 20 eter hole drilled top just rearward stab platform Fabricate complete rudder lower fin medium 3/16 sheet cement place Add 3/32 plywood stab platform 3/32 sheet balsa cap Trim sand assembly completely 400 grit sandpaper locate pylon assembly fuselage temporarily assemble engine timer rubber-band stab place Teeter assembly round pencil laid diagonally across corner table Rubber-band wing loose pylon assembly slide along fuselage top until horizontal balance point determined carefully align epoxy pylon assembly securely top fuselage box balance point should locate about 3 forward TE wing Disassemble wing stab remove hardware fuselage Plank pylon area 1/16 sheet running wood grain vertically Notch pylon front rear wing retaining hooks Sand entire completed fuselage pre-dope status Cut auto-rudder trim tab out rudder area re-install thin nylon R/C hinge material Sig packages suit able material Auto rudder hardware detail shown plans Install bent aluminum tubing D-T string come out left side fuselage Complete fuselage either covering doped-on colored tissue finish epoxy resin follow Hobby-Poxy K&B Super Poxy paints Start adding final hardware rubber band hooks D-T A/R string guides short lengths 1/16 ID aluminum tubing snuffer tube timer A/R timer lever etc Completely assemble model cement proper wing stab align ment keys using ths 1/16 X Vs spruce Flying have long since abandoned conventional new model flight testing methods after smashing up too models because low speed stalls low power prop backwards horizontal hand launch exchanged very success fully VTO full power go broke method 2-3 second engine run giving full power VTO launch hauls model directly away ground faster does permit time return under power engine quits further away terra firma model transits glide realisti cally traveling normal fly ing speed After first flight probably quite close final trim skipped low-speed test procedure normal competiton fly ing mode model anyway main ingredient approach proper model preparation before first flight Obviously cannot grab nOOPL MORE wi/AlT laSter n same power1 ep~eeted ~3e G'e\\e ~jedoo94o~ V del off work bench zap out test site some reasonable idea model should perform Care ful eyeballing checking factors affecting power-on flight characteristics required something should have doing anyway As right power-right glide pattern suggested insure horizontal stabilizer perfectly flat steam approximate i/s washout wing tip left inner wing panel flat right inner wing panel corporate approximate 3/32 washin rudder tab should adjusted about 1/16 right engine sidethrust zero possibly some slight left RC Pylon Racing continued page 31 real proud have two juniors now flying district Steve Barrett age 12 Mark Harter age 14 Steves first year racing flying real well QM event plans enter F-I Sportsman event Mark has racing three seasons flying best QM F-I event Southern California District racing season started district April 19-20 Sepulveda Basin Seventy flyers entered F-I race entered Standard Class Expert Class Kent Nogy Char lie Shaw Terry Prather won Expert Class Terry turning fastest time 1159 Bob Johannes Steve Sica M Hoem won Standard Class Bob turning fastest time 12 11 Great Bakersfield Air Races 100 entrants various parts United Stateseven Mexico Japan nationally important meet lived up expectations Sponsored MAN BARKS held May 17-18 contest strong organization procedures wit nessed some truly great individual perform ances smoke cleared three-way tie first place Jim Jensen fastest time 1171 Bill Preis 1198 Joe Foster 1172 Other fast times Terry Prather 1171 Ed Hotelling 1202 52 entrants Standard Scott Johnson 1288 Gary Hawk 1294 Dennis Osborn muBd 5 3 54304 6364354 747678504 848688654 949-69798 104106854 11-4116118 RC 124 t25 26150 GRISH BROS ST JOHN ND ANA 46373 thrust 1/16 shim under stab TE might wise start little stall glide still better negative dive Hand gliding tests can also determine needed satisfied homework has completed set fuel shut-off 2-3 second engine run VTO launch under full power prop front wards Normally final trim completed few screwdriver adjustments A/R tab power glide little stab tilt up right side hope find model design rewarding have Good luck sic em! 1282 Rudy Formanek second race 1287 Angelo Sanchez 1377 fastest time Standard set Doug Ruble flying Tiger-powered Prather Toni Visalia Ca Doug 17 years old has racing Quickie 500 year second F-I racehe turned 12 14 Hes boy watch out younger brother also starting out Nice young men father likes help California District sets another safety stand ard Chain link barrier placed around lap counters #1 flagmen Also chain link L shaped barriers around #2 & #3 flagman addition larger wood pylons Another safety precaution no spectators allowed down-wind starting line Congratula tions Spickler crew always thinking about new ways give us safe race free raffle workers flyers ticket for $1500 mer chandise including Kraft Radio items donated Sixty workers came help worked 1 hour shifts telephone com munications between pylons starting line desk desk could hear cuts called communications desk starting line receive cuts called flips switch correct lap counter information relays Cuts shown both lap counters #1 Pylon makes easier callers pick up Tiger X-40 predominant engine Prather Little Toni LRIA pre dominant airplanes Ed Hotelling Bill Pries using K&B engines Entries also came Japan Mexico Fla NC Ga Ill Idaho Ariz Md Va September 1975 71
Edition: Model Aviation - 1975/09
Page Numbers: 18, 19, 20, 71
moxo mUDon Rossi 15-powered FAt version ships need build seasons competition three classes Author suggests plans having suitable stable models Versatile flexible 450 FAI total projected area takes 1 5 25 engines Classes B well IT MAY BE quite timely re-evaluate apparent advantages competing various free flight events same model models identical quite simi lar size design Aside obvious benefits similar flight characteristics interchangeability model parts en gines present environmental situations offer growing influence regard example family car rapidly becoming smaller making task packing models contest trek con tinually complex Like models same size design would tend some what alleviate chore However multi purpose models capable competing class could considerably ease problem decreasing number models required compete immediate direct influence might current national emphasis being placed ecology econ omy Translated model builders language has simply resulted material shortages higher prices necessary items glue dope balsa wood engines timers asso ciated hardware As cost model building supplies skyrockets sprinkle little ever-present competition hobby dollar golf clubs fishing poles tennis racquets camping equipment etc reappraisal real value multi-purpose competition designs may well beneficial An additional slant worth multi-purpose model arises two models permissible per event rule As result rule die-hard competitors feel stripped naked start contest season least two deep events Never fear am going hypocritical enough propose good multi-purpose model would permit highly competitive three differ ent events whole season Nor will tax intelligence further suggesting can now forget about building other five models would normally re quire However feel sensible compromise somewhere between six such foura front line model three events multi purpose model utilized emer gency backup three events threeby utilizing front line multi-purpose model two events engine switching techniques second front line model third event plus backup multi-purpose model cover three events again sensible combi nations further con sider possibilities should front line backup models same competitive multi-purpose design concept affords greater flexibility Max-A-Million 450 con ceived multi-purpose mind has proven versatile flexi ble FAI size total projected area will comfortably accept engine sizes 15 25 thereby covering both Class B well Per plans presented can built weigh out 20-22 ounces two AMA Classes leaded-up weigh 265 ounces FAI Wing stab con structions directed Monokote Solar Film type coverings durability fuselage also designed take its lumps Yet simple material substitutions slight construction deviations have produced very light Japanese tissuecovered trophy-winning A/B models have weighed out 16-18 ounces weight-reducing options quite obvious list few would include following wing stab revisions delete wing leading edge planking replace t wing stab ribs 3/32 sheet designated 3/32 sheet ribs made 1/16 sheet 3/32 sq spruce wing turbulators can balsa solid balsa tip plates can replaced conventional slanted rib construction cover Japanese tissue place plastic types Fuselage weight reduction changes could include substitution /8 spruce longerons balsa careful selection lightweight sheet balsa stock fuselage pylon sheeted surfaces Therefore before starting construction carefully analyze plan ultimate particular requirements construct model models accordingly Wing Select sheet balsa wing ribs thickness weight rela tive whether intend build multi-purpose model FAI lighter A/B model per above sug gestions Cut out ribs indicated cut dotted line nose rib going plank area Conventionally, pin plans inner panel /s X TE lower spars 3/16 /8 X /8 Tip panels utilize same stock sizes however note both bottom spars get tapered 3/16 tip TE gets tapered ing off thick front edge After notching TE match rib thickness cement ribs place except dihedral polyhedral ribs W 1 W3 Add s soft balsa tip block time simpler ex cess material trimmed block until later wish add l/16 X /8 diagonals may 18 Model Aviation easily time except omit either side polyhedral breaks now diagonals lie top lower spar also cemented Origi nally added model slated especially FAI use method adding little strength needed extra weight added somewhere anyway structurally would probably beneficial very light wing add top spars turbulators yet lesser task added after polyhedral dihedral set Remove wing tip panels plans re-cement joints Carve bottom tip blocks across end section diagonal indicated finish trim top until after top spars turbulators have added Trim cement tip panels inner panels still pinned plans blocking up 3 poly hedral angle Add 1/16 plywood poly hedral braces WD WE shown follow W3 rib /s top spar 3/32 sq turbulators may now cemented place tip panels cement has set remove two wing halves plans re cement remaining joints prefer finish trim sand wing tips stage easier manipu late one-half wing rather entire wing Trim align two wing halves --p U-__ WIWI 7j king up 1 dihedral angle cement securely Cement place 1/16 plywood dihedral braces WA WB 1/32 plywood braces WC follow center rib WI thoroughly drying can start adding remaining /s top spars 3/32 sq turbu lators inner panels After removing one-piece wing plans add appropriate rib gussets remaining diagonals adjoining polyhedral breaks 1/16 sheet balsa leading edge planking plus center sec tion planking indicated Carve away excess balsa finish sand 400 grit sandpaper Sand very smooth surface intending use miracle plastic film coverings prefer use trans parent Monokote appears lighter less brittle opaque colors Solar Film find provide less surface tension Monokote will suffice Stabilizer Obviously same basic construction procedure followed per wing may seem though building fifth wing panel proceed Cut 13 stab ribs selected balsa sheet stock Pin LE3/16 x TE dual/8 bottom spars place plans Notch TE cement ribs place Add ocks follow continued page 20 wAIt L WI~3 U- mn~m Hany *SA U inUI III. S tt IiLTI PURPOSE B OR FA1 GORIEST FREE FLIQ4T OESIGFd September1975 19 Class A/B version powered Super Tigre 23 picture Nate AMA numbers 4yf Max-A-Million 450 1/8 X 3/16 top spar 3/32 turbula tors Add optional 1/16 X I/s diago nals desired dry remove assembled stab plans re cement joints Add appropriate gussets 1/16 sheet balsa planking Notch front underside three center ribs add 1/8 X balsa spruce stiffener shown Carve tip blocks same manner wing finish sand 400 grit sandpaper Cover finished stab match wing covering material Bend front rear stab hooks heavy duty paper clips soft #20 gauge baling wire epoxy place Fuselage chore hit Out ordinary probably havent con structed built-up pylon since last Zipper Sailplane assure considerably elementary Build pylon frame directly plans pinning down 1/8 X 3/s spruce wing retaining rail Follow cementing front rear /8 posts 1/8 K om keel center post Cement /8 sheet gussets place right side vertical /8 X center post edge atop constructed pylon core Cement /8 sheet right-side contour parts P1 P2 tions shown Complete right side construction trimming 8 strips fit vertically between top bottom contour parts indicated will serve solid back up studding sheet planking added later dry remove sembly plans cement left side uprights contour parts make pylon symmetrical add plank ing yet Piece together wing platform medium hard /8 sheet balsa add /8 plywood spruce strips front rear added strength have yet knock corner off wing platform since started doing Cement fore aft /8 sq spruce side rails top cement sub-assembly proper align ment recently constructed pylon sembly Set aside await its position top fuselage box fuselage just box built upside down over plans noted building light weight version select quite hard /s sheet balsa fuselage top will become foundation pylon attachment fuselage Pin top plans cement 1/8 sq spruce longerons atop perimeter shown Add /8 sheet formers secure front /8 sheet doublers between formers Fl F5 epoxy Cut both fuselage sides same piece 3/32 sheet balsa uniformity cement securely place Add bottom /8 sq spruce longerons care fully trim cement /8 sheet side doublers place between formers Fl F2 Permit cement dry thor oughly carefully remove threesided fuselage box plans time fabricate fit fuel tank place establish fuel shut-off location use modified Perfect #7 tank converted camera timer necessities may possibly wish insert favorite tank-timer arrange ment modelers seem have some personally tailored combo prefer After internal items completed button up insides 3/32 sheet bottom cap Press #4-40 blind nuts 5/32 drilled holes 3/16 plywood firewall assemble aluminum mounting plate four attaching screws fuselage front end also de signed match up standard Super Tigre radial mount use S/T 15 19 23 Fit epoxy assembly securely front fuse lage box Before epoxy completely hardens remove screws aluminum plate prevent breaking screws should hardened epoxy freeze place As will need added weight FAL use have quite successful adding Tatone beam mount Rossi 15 out front addition aluminum mounting plate Also optional wire skid recommended can added noted plans Additional weight re quired later may stuffed fuse lage box through fuel timer opening Any counter-balance weight required tail can added through continued page 71 20 Model Aviation Close-up plumbing Fuel enters tank pressurized middle line engine lower line top line flood-oft pinched shut timerwhich also operates OT stab FAI version left must leaded up 265 ounces Can built weigh out 20-22 ounces A/B Structured Monokote Solar Film Japanese tissue jobs 16-18 ounces Max-A-Million continued page 20 eter hole drilled top just rearward stab platform Fabricate complete rudder lower fin medium 3/16 sheet cement place Add 3/32 plywood stab platform 3/32 sheet balsa cap Trim sand assembly completely 400 grit sandpaper locate pylon assembly fuselage temporarily assemble engine timer rubber-band stab place Teeter assembly round pencil laid diagonally across corner table Rubber-band wing loose pylon assembly slide along fuselage top until horizontal balance point determined carefully align epoxy pylon assembly securely top fuselage box balance point should locate about 3 forward TE wing Disassemble wing stab remove hardware fuselage Plank pylon area 1/16 sheet running wood grain vertically Notch pylon front rear wing retaining hooks Sand entire completed fuselage pre-dope status Cut auto-rudder trim tab out rudder area re-install thin nylon R/C hinge material Sig packages suit able material Auto rudder hardware detail shown plans Install bent aluminum tubing D-T string come out left side fuselage Complete fuselage either covering doped-on colored tissue finish epoxy resin follow Hobby-Poxy K&B Super Poxy paints Start adding final hardware rubber band hooks D-T A/R string guides short lengths 1/16 ID aluminum tubing snuffer tube timer A/R timer lever etc Completely assemble model cement proper wing stab align ment keys using ths 1/16 X Vs spruce Flying have long since abandoned conventional new model flight testing methods after smashing up too models because low speed stalls low power prop backwards horizontal hand launch exchanged very success fully VTO full power go broke method 2-3 second engine run giving full power VTO launch hauls model directly away ground faster does permit time return under power engine quits further away terra firma model transits glide realisti cally traveling normal fly ing speed After first flight probably quite close final trim skipped low-speed test procedure normal competiton fly ing mode model anyway main ingredient approach proper model preparation before first flight Obviously cannot grab nOOPL MORE wi/AlT laSter n same power1 ep~eeted ~3e G'e\\e ~jedoo94o~ V del off work bench zap out test site some reasonable idea model should perform Care ful eyeballing checking factors affecting power-on flight characteristics required something should have doing anyway As right power-right glide pattern suggested insure horizontal stabilizer perfectly flat steam approximate i/s washout wing tip left inner wing panel flat right inner wing panel corporate approximate 3/32 washin rudder tab should adjusted about 1/16 right engine sidethrust zero possibly some slight left RC Pylon Racing continued page 31 real proud have two juniors now flying district Steve Barrett age 12 Mark Harter age 14 Steves first year racing flying real well QM event plans enter F-I Sportsman event Mark has racing three seasons flying best QM F-I event Southern California District racing season started district April 19-20 Sepulveda Basin Seventy flyers entered F-I race entered Standard Class Expert Class Kent Nogy Char lie Shaw Terry Prather won Expert Class Terry turning fastest time 1159 Bob Johannes Steve Sica M Hoem won Standard Class Bob turning fastest time 12 11 Great Bakersfield Air Races 100 entrants various parts United Stateseven Mexico Japan nationally important meet lived up expectations Sponsored MAN BARKS held May 17-18 contest strong organization procedures wit nessed some truly great individual perform ances smoke cleared three-way tie first place Jim Jensen fastest time 1171 Bill Preis 1198 Joe Foster 1172 Other fast times Terry Prather 1171 Ed Hotelling 1202 52 entrants Standard Scott Johnson 1288 Gary Hawk 1294 Dennis Osborn muBd 5 3 54304 6364354 747678504 848688654 949-69798 104106854 11-4116118 RC 124 t25 26150 GRISH BROS ST JOHN ND ANA 46373 thrust 1/16 shim under stab TE might wise start little stall glide still better negative dive Hand gliding tests can also determine needed satisfied homework has completed set fuel shut-off 2-3 second engine run VTO launch under full power prop front wards Normally final trim completed few screwdriver adjustments A/R tab power glide little stab tilt up right side hope find model design rewarding have Good luck sic em! 1282 Rudy Formanek second race 1287 Angelo Sanchez 1377 fastest time Standard set Doug Ruble flying Tiger-powered Prather Toni Visalia Ca Doug 17 years old has racing Quickie 500 year second F-I racehe turned 12 14 Hes boy watch out younger brother also starting out Nice young men father likes help California District sets another safety stand ard Chain link barrier placed around lap counters #1 flagmen Also chain link L shaped barriers around #2 & #3 flagman addition larger wood pylons Another safety precaution no spectators allowed down-wind starting line Congratula tions Spickler crew always thinking about new ways give us safe race free raffle workers flyers ticket for $1500 mer chandise including Kraft Radio items donated Sixty workers came help worked 1 hour shifts telephone com munications between pylons starting line desk desk could hear cuts called communications desk starting line receive cuts called flips switch correct lap counter information relays Cuts shown both lap counters #1 Pylon makes easier callers pick up Tiger X-40 predominant engine Prather Little Toni LRIA pre dominant airplanes Ed Hotelling Bill Pries using K&B engines Entries also came Japan Mexico Fla NC Ga Ill Idaho Ariz Md Va September 1975 71