Radio Control: Helicopters

WELCOME back months column will devoted Kalt Cyclone II distributed US Hobby Dynamics available local hobby shop Anyone has hobby length time familiar Kalt Helicopters believe Mr Oki second form com pany manufacture RC Helicopters Starting smaller version Schluters Co bra Kalt has business ever since gives conipany over 20 years RC Hlicop ter experience Kalt has always known high-quality Japanese-style machines conse quently its products have always popular Japan late Seventies Kalt expanded its market include Europe USA Because expansion have changes Kalt line due largely Western influences chang ing times general Several years ago Kalt marketed original Cy clone Initially Helicopter fraternity hailed Kalts answer Hirobo Shuttle course because Cyclone aimed toward beginners market used molded construc tion did Shuttle Cyclone proved good-flying ship robust construction Sadly through whatever cir cumstances never gained popularity should have least US English mar kets Sensing Kalt went back drawing board updated Cyclone changes include following K-4 main rotor flapping head has exchanged new K-5 molded head flat-belt tail-rotor drive now toothed belt main rotor pitchcontrol mixer made new material prone swelling main shaft autorotation clutch now standard equipment noticeable change original tinimaginatively styled cabin has replaced modern streamlined adds much Cyclone IIs new image might quick think changes last-ditch effort Kalt breathe new life old dog think however would very unfair attitude take toward Cyclone II would prefer think So just what Cyclone II Thats kind hard nail down According market ing blurbs box 50-powered fullhouse machine featuring single-axle composite rotor head toothed-belt-driven tail rotor captive swashplate autorotation gear standard car bon-fiber tail tube Molded parts include tail ro tor blades tail rotor housing side frames skid struts servo receiver trays cooling shroud swashplate standard aluminium Kalt unit clutch Collective pitch action via slide-ring assembly slotted main shaft wire drive Cyclone II large machine 55-indiameter blades standard will handle 59-in rotors engine-to-main-rotor gear ratio 91 As comes box performance will gentle highly stable puts tbe Cyclone II sport/trainer category purpos es excellent As trainer Cyclone II quick build set up molded strong Heres case point open up switch mount accept PCM ICs switch harness material under -in thick difficult trim Continued page 168 48 Model Aviation Radio Control Helicopters Larry Jolly 15781 EmpireLn Westminster CA 92683 Kalts Cyclone II large 50160-size machine suited needs novice intermediatelevel fliers Features include molded plastic side frames Kalts latest K-S main rotor head also available ARF form complete Webr5 50 needing radio installation changes have made Cyclone lithe Helicopter should have imported US mar ket first time around Photo left gives clOser look Cyclone Ils side frames engine mounting attractive new canopy Toothed belt drives tail rotor takes power off bottom main reduction gear Note on-board starting belt lying across cooling shrOud right closeup Kalt K-5 rotor head teatures 50/50 Bell/Hiller mixing adjustable composite construction single-axle design lots precision ball bearings motor voltage spikes arid presto go devices too Yup 1 can see happen ing about scenario industry get responses concerns Ill happy share everyone future col umns Meanwhile thank Steve lengthy professional response De cember 89 column Another thought motors have capacitors mounted brush terminals Usu ally physically small ceramic Mylar polystyrene capacitors ie ones relatively low value normally ranging 0001 005 microfarads However Ive seen some folks us ing large oneselectrolytic capacitors several microfarads suggest nor use large-value capacitors using high-rate controls Stay small-value range given above rea son speed controls supposed apply voltage motor on/off fashion Highrate controls fast capacitors nature tend disallow thisa clear significant contradiction gets worse increasing ca pacitor size same time significant increases capac itor size usually little anything reduce mo tor RFI radio frequency interference case betterand fact could worse motor capacitors 0001 001 microfarad range close out topical area month heres observation Despite rather large amount mail Ive received speed control issue zane has come manufacturers what thought would happen wrote last Decembers column Im including tidbit cause several readers also thought did Whatever please remember everyone sole purpose help matters Electric Heres some personal Electric trivia share includes year ago January 1 began keeping better mail log now year has passed can tell received over 371 letters 1989 say over because did fail log few perhaps dozen incoifling letters over course year disk filing glitches Any way just thought youd like know much write Beyond however number above also indicative much write nearly letter answered Some did want reply seems like Ive answered quickly enough please keep above niind may seetil strange some folks think writing column life Listen folks have job too 371-letters figure combined fact people wanted needed some kind answer should make clear selfaddressed stamped envelope SASE very im portant Thai represents almost $100 postage alone last time checked weren t giving envelopes away either Please Otherwise may come time ne cessity practicality wont able re spond OK trivial tidbit Like mail log also maintain flight log fact dis cussed detail August 1984 column MAs second-ever RC Electrics column re viewing Electric flying year 1989 counted total 668 recorded Electric flights spread over 10 planes recorded mean have date flight time airborne delights written down ever get time Ill total up associated air time Anyway two 10 planes Skyvolts accumulated total 319 flights 668 real total few additional flights did get recorded throughout year due interruptions logis tics etc Also instructor pilot get fly others models quite bitincluding some wet oneswhich log could eas ily get impression like fly really like fly Electric Yup Ill move away keyboard over building board Ive got rlice Electric project mill Ill share future Please forward comment question latter SASEpretty please sugar address given column s header send letters Model Aviation address just slows things down since have forward home Pennsylvania Happy Electric Landings everyonel RC Helicopters/Jolly Continued page 48 X-Acto blade So lot Cyclone plastic plastic lot carbon reinforce ment word its tough Talking buddy Dan Melnik agreed added never seen Cyclone side frame break OUT OF THE ASHES . THE WNNERS CIRCLE PHOENIX T SPAN 132 AREA 1047 SO IN WEIGHT 727602 AJRFOIL 84061 WiNGLOAD 10 02180 FT ASPECT RATlO 1671 COMPETITION PRODUCTS 921 BIRDIE WAY APOLLO BEACH FL 55572 813 645 5171 168 Model Aviation 1989 F3C World Champion Dealer Inquires Invited BLACK SHARK TAKES MOST 5O-6J MECHANICS Light weight Epoj Glass Fuselage 5185 Painted Fuselage $425 Sport 11/C 320-H Tuie CreeK Ct San ra 95125 Tel 408-298-0311 Fax 408-298-6538 Y Dobashi MADE IN USA RC Electrics/Kopski Continued page 165 FOR ADOONAL INFORMATION BEND LSASE R/C AIRCRAFT AND HOBBY 5559 RICHMONDHOUTuN IA io56 FLY pmw*usiin FUEL FROM KINCSWAY ALL PARTS PRE-CUT & PRE-PAINTED *BUILD & FLY IN TWO HOURS PER AIRPLANES 433 NIHOA STREET KAHULUI HI 96732 USA CATALOG $750 Contains 1000s paper airplanes ostage stamp size 6 foot wing span Gliders rubber powered Diecut youcut Largest known source paper airplanes world Cost catalog deducted 1st order over $2500 ASTOUNDING CataLo CORSAIR pap4 aLtplane above. $1050 tat $250 po6aga crash Because its size Cyclone easy see keep track learning fly circuits Training Cyclone IIs calling however exchange original engine mount 60-size mount Kalt Baron drop hot 60 either Kalt H-Blades 57 175-gram weighted Champion blades add Kalt C-Mixer inline swashplate TSK ball-raced bellcranks 500mm flybar wind head 1 600 rpm 91 gear ratio means winding engine 14400 rpm have ace hot-doggin machinewhich just happens way Gary guys Action Hobbies West Lubbock TX fly Cyclone us would also suggest Cyclone II modified manner would fly very much like Kalts Excaliburwhich makes sense since have same K-S rotor head Building Cyclone II very easy man ual over 30 pages length very concise good illustrations easy parts identifica tion Helicopter assembled nine basic steps associated components hard ware supplied separately numbered bags kit well organized no shortage parts building mode Cyclone II also available built-up complete Webra 50 ready radio installation want pass along few notes collected assembling Cyclone II Although structions very complete feel certain things need further amplification Step Kalt suggests using tapered reamer enlarge crankshaft hole cooling fan proves necessary potentially bad move hole must enlarged drill press proper-size drill must used en sure minimum clearance achieved though Cyclone II uses belt starting fan must have minimum runout Using tapered reamer no way ensure accuracy Also Step 1 check engine lies flat mounting beds being forced onto mount OS 50 FSR seemed pinched just below mounting lugs could have caused undue stress crankcase problem quickly remedied radiusing corners mount file inserting clutch springs straight 062 music wire check holes clutch shoe too tight necessary use number drill next higher size open up hole slightly spring breaks during usage can easily fabricate new ones music wire way Kalt does call out use thread-locking compound assemblies still like use whenever Im dealing nylock-type nut Step 3 follow assembly sequence care fully whatever don tforget start ing belt guarantee youll hate yourself morning Also pay atiention side-to-side runout engine fan unit must run true will soon experience clutch bearing trouble Step 4 mount servos molded trays servo trays really works art being very light very strong However 23 x 12 metric tap screws supplied servo mounting suitable mounting JR servos used servo screws came May1990 169 14 Wingspan Paper Flying Scale Model Airplane $7 00 radio suggest same Step 6 will mount tail fins attach horizontal put bit silicone glue mounting surface will keep tailplane place keep clamping too tightly tail tube Step 7 Kalt does supply fuel cutoff clamp filter Use throw away small-size silicone line want use side tank line too small good fuel flow Also step will attach various pushrods servo arms bellcranks Kalt does make use control rods have Z bends end accepted ball links work well provided builder uses proper size drill relieve servo arm bellcrank holes make too big hole rod will become sloppy fit control will suffer Kalt supplies plastic pushrod tail rotor con trol Cyclone II modified unit slid ing 062 music wire pushrod inside inner housing bonding place CyA glue Control connections made using Z-bend tail rotor end solder link servo end makes nice tight tail rotor control no chance pushrod deviation through ther mal expansion Everything else completed according manual looks great took just under 10 hours assemble Cyclone II counting painting cabin should mention Cy clone II features OS 50 FSR power JR PCM 10 radio guidance Next month Ill go over setting up flying Cyclone II points can pass along PCM has very enjoyable machine put together everything fitting properly its ap parent Kalt pays lot attention quality now Cyclone II nearly ready blast-off Please come back next month part II BCNU RC Pylon Racing/Hager Continued page 49 thickly pressure up about 40 psi Enough primer will have applied once area appears white primer has dried use 180 220 dry sandpaper brand Bruce recommends 3M Trimite will know have sanded enough re mains primer small spots appears has sanded away next step start painting color Bruce uses same mixture 11 color does primer Bruce feels re gardless base color ultimately used jobs should start white should ap plied lightly enough can see through up close yet appears solid distance five feet reason Bruce prefers white helps other colors cover better problems people encounter trying good paint job apply much too much paint unfortunate because lightness aircraft beneficial Bruce strives finish planes same manner primer coat close scrutiny can actually see through color next five feet away colors solid uniform will still some pinholes filled Bruce does leftover primer has kept refrigerated base color isnt white use primer liberally filler base color white careful use enough primer fill what has filled Once again dry sand 220 paper repeat filling procedure necessary Once satisfied filling process ready mask out areas base color Bruce recommends use 3M Fine Line tape comes A-in widths material can purchased auto parts stores roll should enough couple mula Ones Once edges masked prefers / areas arent painted covered masking tape Saran Wrap Using same mix above base color Bruce recom mends spraying 28 30 psi lowest possible pressure will atomize paint create gentle spray nozzle gun point may thinking ahead let tering numbering aircraft companies furnishes precut numbers either stock specified lettering Letter Teck Its ad dress PO Box 578 Stillwater MN Should want call rush order ask lissa Letter Teck furnishes seven different types lettering Scotch Cal vinyl masking film same masking film may purchased office supply stores under brand name Scotch Cal Another manufacturer lettering Chart Pack its Rub-On lettering can found art office supply stores Original EZ UP% Sun Shel ters * 8x8Sturdy Steel Frames Heavy Duty Fade Resistant Nylon 1OX1OCanopies RedWhite Blue 1O15Sets Up less 60 Second Authorized E-Z UP Corp DealerNo Ropes Nothing Assemble * John Peck Leisure Products Ltd 3287AMA 8580 Other Sizes Colors And131 Ravenwood Road Accessories Available Plus VersaillesKY 40383 Custom Logos LetteringWrite1606 873-5172 @1990 170 Model Aviation VINYLWRITE CUSTOM LETFERING Providing elegant time saving economical finishing touch modelers e EZ TO APPLY e Our lettering comes prespaced prealignedsaving hours cutting fuss aligning individual letters decals text custom corn p uter cut 3M 2 mil thin 17 colors 8 type styles including Military B[ock e 1/4 12 high NOW AVAILE Stencil Mask & 1 Color Outlining Premium cast vinylPriced right no minimum charge Eg AMA plus number P8ELOFFTRKCARRIERTAPK1high 2high plus $125P&H _STEP BACK & ADMIRE YOUR WORK.Call write cornplete info MlormprocmcduponNcsAMAo sontipack & sample ITS FREE VINYLURITE CUSTOM LETIERING gte om Letter Today 16043 Tulsa StreetSt Granada Hills CA 91344-The VINYLWRITE Way 818363-7131 fftoon 6PM PacificMail order CA res add taL Continued page 172 TOP JET pilot bust completely finished authentically detailed poseable 1/8 scale ifl QOE LI jJI UUU U14-41 U Wp o box 5631fresno cx 53755