WRITING column unusual Hardly two prepared under same conditions example am writing start column motel room Dayton OH after meeting Wright-Patterson AFB concerned F 15E USAFs new ground attack fighter Ill some work column airplanes tween home Fort Walton Beach FL finish home evenings after work Does get boring No sometimes diffi cult come up ideas write about Yes ideas come Mostly self large percentage come readers particular topic youd like information Let know its something general interest have experience youll read about get credit idea topics general interest came 16-year-old aspiring Pattern flier Em manus PA whos flying RC airplanes about year wrote asking lot questions fact signed letter Person Asks Questions Peter Howard Well Peter aspiring Pattern fliers would like some answers questions answers 1 What would great Pattern afrplane buy Peter two ideas Aurora 60 lanta 60 expect Id agree ideas youre partly right Both Aurora lanta fine Pattern airplanes have won lot trophies past few years personally think Aurora better two air planes based what have seen top-level com petition However source question beginning Pattern flier answer has responsive needs beginning Pattern flier flier just starting out Pattern needs airplane will perform maneuvers likely required fly during next year Will Aurora Atianta perform Nov ice Sportsman maneuvers well Yes will lot other fine airplanes Heres partial list other candidates first Pattern airplane Super Curare Tiporare Super Kaos 60 Dash 5 Magic Arrow Acromaster ow lot airplanes equally capa ble complete list would very long point remember selection first 50 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte Ill Sleepy Oaks Rd Ft Walton Beach FL 32548 Jason Shulman won High Point Junior Award Sporlsman 88 Nats placed 5th overallnot bad 14-year-old Plane Blue Angel powered OS 61LS pumper Paul Vitrano cant speak told Van Putte via alphabet card can fly RC thanks friends like Bob McLain Jack son MS reworked Futaba transmit ter could operate Paul attends contests LA MS FL Peter Howard aspiring Pattern flier shows off Great Planes Super Sportster 40 now flies questions Van Putte prompted months column closed letter re quest Ron tell Chip Hyde am coming after him airplane airplane capable winning highest levels competition necessary success lower levels competition fact may desirable select other airplanes Ill explain part answer Peters next two questions 2 How difficult build airplanes Aurora AdantaR VP have worked traditional style building balsa instant glue Would need other skills techniques build fiberglass foam have built Aurora discussions fliers have indicate building fuselage complicated very difficult ail highly experienced builder reason would recommend Aurora first Pat tern airplane Fiberglass fuselages take few special tech niques Although fiberglass fuselages now made epoxy resin few con structed polyester resin should use epoxy glues polyester resin fiberglass fuse lages vice versa because dont bond other very well would just troublesome have firewall servo rails pop loose inside fuselage wrong kind resin used glue Keeping horizontal tail attached fiber glass fuselage can also headache fuse lage received tail post already installed rear vertical fin nearly impossi ble get inner portion joint between fuselage horizontal tail once hori zontal tail has installed bad situa tion because normal wear tear air plane especially picking up tail can cause fuselage sides come loose exterior fillets have emplaced join two parts true because theres usu ally nothing support fuselage shell inside solution problem remove part tail post permit aceess inside fuselage/horizontal-tail joint install crude dont have pretty fillets inside fuselage using microballoons ep oxy glue polyester appropriate applied disposable brush cant dont want remove tail post can install supports inside fuselage before attaching horizontal tail Have run side side fuselage cut accept tail will keep fuselage sides squeezing together area will aid maintaining joint between two compo nents think fiberglass fuselages easier build balsa ones example fiberglass fuselages usually come wing fillets molded fillets must constructed balsa fuselages Its small task good job installing wing fillets balsa fuselage other fuselage details like canopy pushrod exit guides engine cowling molded fiberglass fuselages must fabricated balsa fuselages recommend use fiberglass fuselage above reasons also because re sistance dings normal use still leaves lot great airplanes beginning Pattern flier choose still havent answered part question about skills techniques required foam trying part building foam applying balsa foam doesnt come nat urally isnt really very difficult As men tioned October column like apply fiber glass cloth balsa skin before attaching balsa foam Continued page 156 Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultrallgbt Honeycomb Wingeores extra 940460 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9556 116 st. North Delta British Columbia 6Z4 Canada 604-588-0605 December 1988 51 High Performance Models presents ECLIPSE Designed Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Basic Kit $15000 Pro-Built Kit $35000 add $1500 S&H Send Check Money Order r NO MORE KICKBACKS THROWN PROPS popular bes se ng add gn system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 8 4 stroke both single & twin cylinders 4-strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-beck throwing props Absolutely no pro-detonation death 4-stroke engines Much lower priced fuel no rusty bearings commercial fuel available Red-Max Very low 900-1000 rmp reliable idle easy hand starts can control ignition timing will stop pro-detonation engine will ron mudi cooler develop power Now available conyletely shielded spark plug lead 90 plug cover Chosen T&G Mfg & gyros Originals f its outstanding reliability Send $t 00 price list newsletter ordering Box 1732 Riverton WY 82501 307 857-6897 CH Electronics Inc Made USA Curtiss Jenny * Quality hand-cut kit complete plans rigging scale control setup wire parts pre-bent special hardware included parts individually indentified packaged Decals Major Decal * Engine sizes 20 40 FS 25 TS * Wing unit removes four screws less 3 minutes flying wires left intact * Superb flight characteristics Introductory Price 13900 VISA erCard e Money Order Michigan residenta add 4% aalea tax Add $550 P&H US orders $1250 foreign Video Catalog $1250 Ipoat nciVHSIBeta *5 rebate return tape kit order Reg catalog sample mini-plan -$2 Hand-Cut Quality Affordable Price AERODROME MODELS LTD 2623 S Miller Rd __ TY__Saginaw Ml 48603 517 781-3000 Other Kits Available Ama-Pacer Baby -Pacer Gipey Moth Rybaby Flybeby Combo Hawker Hurricane Jeater trol built ceramic substrate using surface mount components solder reflow techniques Thats righttheres no printed circuit board product shown SM-4 much thinner time-honored SC-4 Also will have about 30% less drop latter Joe also has works really stnall version already small SC-5 well ceramic-based On/Off switches Preliminary pricing above products $95 charger timer kit $120 assem bled $85 SM-4 $70 SM-5 write Jomar 2028 Knights Bridge Drive Cincinnati OH 45244 info place order tell em ya read MA new products spoke Bob Boucher Astro recently tells Astro will soon offer constant-current version famous DC/DC Super Charger As spoke PC board design estimate availability before spring 89 Bob also has some newer ver sions lower-cost models charger line coming along See what mean Electric REALLY GROWING poignant thought offered readers Mr Dan Minor Marlboro MA recent letter offered following Earth needs ozone castor oil Ozone gas pungent smell ten generated result electrical sparks such occurring motor commutators yes depletion high-altitude ozone layer around earth caused exten sive release fluorocarbons atmo sphere ordinarily blocks suns UV rays gollynow have just hobby rea son go Electric have eco-cause wit Save EarthFly Electric Something ponder Lets pretend mo ment gas engines never existed No family car know lawn mower model en gines What pray tell would call OHFIVE meaningless nomenclature would have familiarity much less inappropriateness think instead might have appropriate size/name like xxx-watt motor Based favorable letters readers liked September column its five-year index MA writings Several thought editor should have presented stuff conve nient tabular format make cutting out sav ing easier Shame Ross Thanks taking time let know feel ings closing have comment request columns closes invi tation nd comment questions SASE please author ell cer tainly Ive getting more mail lately yupElectric growing Ive experiencing some difficulty responding quickly Id like will always strive respond quickly best can increasing volume times cant quite keep up Its getting routine use up half weekend daywhich out available free time lotjust deal incoming mail So answer bit delayed please bear Ive few letters went unanswered because could read name and/or return addressas well portions letter al ways try hard including getting others try interpret whats written lot unneces sary work frustrating cause want re spond think get idea Often reader will send letter comment like concerning September issue mentioned earlier no answer expected Thank yes sometimes will respond kind anyway whats showing up more readers questions WITHOUT SASE Please folks quarter wont break lots quarters AND time write up missing envelopes can make efforts less pleasant dont think SASE lot ask have questionsdo please dont forget legibility Now Please send comment question latter SASE please ad dress given column heading Happy silent landings everyone RC AerobaticsNan Putte Continued page 51 Obviously requires balsa sheets glued together prior applying fiberglass good idea anyway dont want apply fiberglass before attaching balsa foam can attach balsa foam sheet-by-sheet dont recommend Make up complete skin sheets apply foam Heres own questions same subject Should cut lightening holes foam wings use carbon fiber tape add back lost strength No lower classes Novice Sportsman Advancedand maybe Expert Master because nature patterns being flown FM competition re quires extremely light airplanes AMA competi tion does Consequently dont recommend beginning Pattern fliers go extra trou ble expense However dont infer Im recommending heavy airplanes AMA competition Build light dont take extreme SI tatourcsmpIeleiit5 Send SSAE tsr catalog sh 156 Model Aviation Antiques Iry Civilian Helmlpters SalIpIsnen color FOTO4RAK5KOKIJ-FAN 3-views 50000 piajres stock nnn swings stock FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-7/8 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pleme wed $1 forceeykteflet T&D FIBERGLASS SPECIALTIES 30925 Block Dept 4 Garden City Ml 48135 PHONE 3131 421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CASANES PHONE 3131 261-9064 S AiRES MtLLS 5ET/S BOOKS PRECSI0N TNSTRJMENTS 1i- _COMPiETE COTALOG 200 /E Ch 4MPIELL DLS Ce 2100 8 SeE, Road Sprogte1d 5, 45505 mpa513 3428562 measures achieve 3 I have read fliers use YS Rossi engines have used OS several months still runs fine Would rec ommend three No Any three engines mentioned would job beginning Pattern fliers addition several other engines would also competitive lower AMA classes Included choices could Fox Eagle 60 K&B 61 Supertigre S61 Como 61 HP 61 HR 61 Surprised answer Remember question about what needed beginfling Pattern flier what top-level Pattern flier would require demands lowerlevel class patterns severe up per levels Consequently airplanes dont need capable can heavier dont need powerful engine bonus slightly less powerful engines dont cost much either 4 While Nats also noticed fliers aileron servos mounted outside wing reason clarify question what noticed aileron servos mounted wing about halfway out tip servo output shaft servo arm pushrod exposed aile ron driven externally pushrod tached horn aileron two reasons doing first positive control aileron conventional Z-link torque system could provide Most airplanes employ tech nique have half-span ailerons conven tional torque system would require long torque tube resulting springy aileron old-fashioned system involving bellcranks Out wing driven cen trally located servo operating long pushrods usu ally has unacceptable slop aileron doesnt come back same neutral point time Similar problems experienced using nylon pushrods have curved 900 centrally located servo second reason using aileron servos im bedded wing combat aileron flutter rigid aileron linkage higher flutter speed will conventional torque system has always plagued aileron flut ter because flexibility torque tube imbedded aileron servo located close aileron control horn avoids potential problem 5 How determine best length tuned pipe Ive paraphrased lost ques tian purposes brevity clarityR VP referred April 1988 column pp 133134 mentioned MACS put out good chart determining pipe length pipes also good estimate other manufacturers pipes could write whole column subject tuned pipes can really get essence next five para graphs ideal length tuned pipe function engine propeller airplane best have pipe length bit too long too short Making pipe too short results needle valve setting being excessively sensitive what airplane doing Longer-than-optimum pipe lengths take bit off maximum power also broaden out needle valve response Higher-pitched/larger-diameter propellers re quite longer pipe length lowerpitched/smaller-diameter propellers Optimum pipe length function engine rpm engine cant turn high-pitch/large-diameter prop fast can lower-pitch/smallerdiameter prop determine best pipe length must use trial error prop youve chosen length header pipe purchased set needle valve maximum engine rpm Cut header reset needle valve maximum rpm Note increase rpm Cut another try again Keep up until notice rpm isnt increasing much time shorten pipe Thats Id stop could continue cut smaller amounts pipe header until cant detect improvement cut next Thats peak length think its too short pipe maneuvers Okay now know best pipe length best prop used setting pipe length put another prop youll probably find different best pipe length Which prop best pipe length will give performance want dont know Thats up Nobody better judge whats right airplane Good luck Thanks Peter got whole column Out letter hope lot new Pattern fliers able derive some useful information RC Scale/Wischers Continued page 53 ficiently time really high-quality Scale model construction begins rearward deflec tion isnt longer necessary Scale model expected land prototypical manner tail low three-point landing taildragger mains tricycle gear Singlestrut gears usually angled slightly forward force vectors landing loads sup posedly directly along strut axis shock struts past 15 18 years PRECISION MODEL PRODUCTS MadeintheUSA BARSTOCK ALUMINUM SPINNERS Pan NaSize 11-150-B 1-112 T1-175-B .. 1314 T1-200-B 2 11-225-B.. 21/4 TT-226-B . 2114 FAt TT-250-B 2112 TT-251-B FAt .. TT-275-B.. 2-3/4 11-276-B.. 2-3/4 IFAI TT-300-B3 TT-301-B Il TT-325-B . 3-1/4 50-B.. 3-112 TT-375-B 4 TT-400-B etailApprox PriceWeight $1395058 oz 149509502 1595100gz 1695160oz 1895150oz 189519002 209517002 229522002 249520002 2695260oz 289525002 369534002 4995470oz 599552002 699557002 3 Pieces Cone Back Plale Relainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Pan No Size TT-140-A 1/4-28 1T-147-A 1/4-28/7mn tT610-A 6 x 10mm TT-710-A 10mm TT-516-A -24 TI-SiB-A5/1624/Bnn TT-810-A8 x lOun TT-825-A8 x 125mm TT-375-A318-24 TT-125-AlOx 125nm Retail Appros Price Weight S495 061 02 495 .O6loz 495 . 06302 495 02 495 176oz 49507602 495076oz 495 O7Soz 595 117 02 595 11502 3 Pieces Nul Washer arid Machined Bushing Add $350 Shipping Handling Prices suhiecl change wilhoul nolice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 December 1988 157 DIESELS PAW QUICKSTART 03 35 R/C STO Send $1 Info ERIC CLUTTON 913 Cedar Lane Tullahoma TN 37388 PROP NUT ADAPTORS V FOAM CORE FLOATS PLANS AND KITS WE OFFER SELECTION OF FLOAT PLANS AND KITS FOR 4 12 POUND AIRPLANES WITH Y HULL SIGN IN USE SINCE 1972 SEND SASE FOR CArALOG SHEET KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK NJ 07066 Large Scale Miniasure Aircraft Denigo cod Dwine i-ib ilali iMAA 1488 1 16 Scam Anonc C-3 -65 wing27001pp 2 116 Scaio 59C-3 Holidive ing ape3000/pp 32-5116 Scoln 5BD5 Doontleno 93 wing30001pp 4 1/5 5coln AD-3 o5 Dooglon Okyteide3000/pp 5 High Wing enginne, Dee Piene2000/pp Send 295 go compiene nenolog DP Synnenne inn. 1842 1egienieii -macnan TX nose l7l3lggg-96407131054-0059 BALSA PRE FAB AIRCRAFT 40 TO 51 512 AESOMODEL SHARK-SS poo Soogo S~ooldn-o~og SHARK ST 60 opo Topee7 SooIdeoAg 05 W gCo 570cq SSIos FsnqlsCoo og ff A M Gn FIAsIGnoo bb.9~i INTRODUCTORY E AM OP i 9 nOODLING MC VISA COD AINGSWAY ENTEPPRISES SASE4506WILOACRES FOR CA ALOGHOUSTOI4 TX 77072
Edition: Model Aviation - 1988/12
Page Numbers: 50, 51, 156, 157
WRITING column unusual Hardly two prepared under same conditions example am writing start column motel room Dayton OH after meeting Wright-Patterson AFB concerned F 15E USAFs new ground attack fighter Ill some work column airplanes tween home Fort Walton Beach FL finish home evenings after work Does get boring No sometimes diffi cult come up ideas write about Yes ideas come Mostly self large percentage come readers particular topic youd like information Let know its something general interest have experience youll read about get credit idea topics general interest came 16-year-old aspiring Pattern flier Em manus PA whos flying RC airplanes about year wrote asking lot questions fact signed letter Person Asks Questions Peter Howard Well Peter aspiring Pattern fliers would like some answers questions answers 1 What would great Pattern afrplane buy Peter two ideas Aurora 60 lanta 60 expect Id agree ideas youre partly right Both Aurora lanta fine Pattern airplanes have won lot trophies past few years personally think Aurora better two air planes based what have seen top-level com petition However source question beginning Pattern flier answer has responsive needs beginning Pattern flier flier just starting out Pattern needs airplane will perform maneuvers likely required fly during next year Will Aurora Atianta perform Nov ice Sportsman maneuvers well Yes will lot other fine airplanes Heres partial list other candidates first Pattern airplane Super Curare Tiporare Super Kaos 60 Dash 5 Magic Arrow Acromaster ow lot airplanes equally capa ble complete list would very long point remember selection first 50 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte Ill Sleepy Oaks Rd Ft Walton Beach FL 32548 Jason Shulman won High Point Junior Award Sporlsman 88 Nats placed 5th overallnot bad 14-year-old Plane Blue Angel powered OS 61LS pumper Paul Vitrano cant speak told Van Putte via alphabet card can fly RC thanks friends like Bob McLain Jack son MS reworked Futaba transmit ter could operate Paul attends contests LA MS FL Peter Howard aspiring Pattern flier shows off Great Planes Super Sportster 40 now flies questions Van Putte prompted months column closed letter re quest Ron tell Chip Hyde am coming after him airplane airplane capable winning highest levels competition necessary success lower levels competition fact may desirable select other airplanes Ill explain part answer Peters next two questions 2 How difficult build airplanes Aurora AdantaR VP have worked traditional style building balsa instant glue Would need other skills techniques build fiberglass foam have built Aurora discussions fliers have indicate building fuselage complicated very difficult ail highly experienced builder reason would recommend Aurora first Pat tern airplane Fiberglass fuselages take few special tech niques Although fiberglass fuselages now made epoxy resin few con structed polyester resin should use epoxy glues polyester resin fiberglass fuse lages vice versa because dont bond other very well would just troublesome have firewall servo rails pop loose inside fuselage wrong kind resin used glue Keeping horizontal tail attached fiber glass fuselage can also headache fuse lage received tail post already installed rear vertical fin nearly impossi ble get inner portion joint between fuselage horizontal tail once hori zontal tail has installed bad situa tion because normal wear tear air plane especially picking up tail can cause fuselage sides come loose exterior fillets have emplaced join two parts true because theres usu ally nothing support fuselage shell inside solution problem remove part tail post permit aceess inside fuselage/horizontal-tail joint install crude dont have pretty fillets inside fuselage using microballoons ep oxy glue polyester appropriate applied disposable brush cant dont want remove tail post can install supports inside fuselage before attaching horizontal tail Have run side side fuselage cut accept tail will keep fuselage sides squeezing together area will aid maintaining joint between two compo nents think fiberglass fuselages easier build balsa ones example fiberglass fuselages usually come wing fillets molded fillets must constructed balsa fuselages Its small task good job installing wing fillets balsa fuselage other fuselage details like canopy pushrod exit guides engine cowling molded fiberglass fuselages must fabricated balsa fuselages recommend use fiberglass fuselage above reasons also because re sistance dings normal use still leaves lot great airplanes beginning Pattern flier choose still havent answered part question about skills techniques required foam trying part building foam applying balsa foam doesnt come nat urally isnt really very difficult As men tioned October column like apply fiber glass cloth balsa skin before attaching balsa foam Continued page 156 Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultrallgbt Honeycomb Wingeores extra 940460 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9556 116 st. North Delta British Columbia 6Z4 Canada 604-588-0605 December 1988 51 High Performance Models presents ECLIPSE Designed Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Basic Kit $15000 Pro-Built Kit $35000 add $1500 S&H Send Check Money Order r NO MORE KICKBACKS THROWN PROPS popular bes se ng add gn system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 8 4 stroke both single & twin cylinders 4-strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-beck throwing props Absolutely no pro-detonation death 4-stroke engines Much lower priced fuel no rusty bearings commercial fuel available Red-Max Very low 900-1000 rmp reliable idle easy hand starts can control ignition timing will stop pro-detonation engine will ron mudi cooler develop power Now available conyletely shielded spark plug lead 90 plug cover Chosen T&G Mfg & gyros Originals f its outstanding reliability Send $t 00 price list newsletter ordering Box 1732 Riverton WY 82501 307 857-6897 CH Electronics Inc Made USA Curtiss Jenny * Quality hand-cut kit complete plans rigging scale control setup wire parts pre-bent special hardware included parts individually indentified packaged Decals Major Decal * Engine sizes 20 40 FS 25 TS * Wing unit removes four screws less 3 minutes flying wires left intact * Superb flight characteristics Introductory Price 13900 VISA erCard e Money Order Michigan residenta add 4% aalea tax Add $550 P&H US orders $1250 foreign Video Catalog $1250 Ipoat nciVHSIBeta *5 rebate return tape kit order Reg catalog sample mini-plan -$2 Hand-Cut Quality Affordable Price AERODROME MODELS LTD 2623 S Miller Rd __ TY__Saginaw Ml 48603 517 781-3000 Other Kits Available Ama-Pacer Baby -Pacer Gipey Moth Rybaby Flybeby Combo Hawker Hurricane Jeater trol built ceramic substrate using surface mount components solder reflow techniques Thats righttheres no printed circuit board product shown SM-4 much thinner time-honored SC-4 Also will have about 30% less drop latter Joe also has works really stnall version already small SC-5 well ceramic-based On/Off switches Preliminary pricing above products $95 charger timer kit $120 assem bled $85 SM-4 $70 SM-5 write Jomar 2028 Knights Bridge Drive Cincinnati OH 45244 info place order tell em ya read MA new products spoke Bob Boucher Astro recently tells Astro will soon offer constant-current version famous DC/DC Super Charger As spoke PC board design estimate availability before spring 89 Bob also has some newer ver sions lower-cost models charger line coming along See what mean Electric REALLY GROWING poignant thought offered readers Mr Dan Minor Marlboro MA recent letter offered following Earth needs ozone castor oil Ozone gas pungent smell ten generated result electrical sparks such occurring motor commutators yes depletion high-altitude ozone layer around earth caused exten sive release fluorocarbons atmo sphere ordinarily blocks suns UV rays gollynow have just hobby rea son go Electric have eco-cause wit Save EarthFly Electric Something ponder Lets pretend mo ment gas engines never existed No family car know lawn mower model en gines What pray tell would call OHFIVE meaningless nomenclature would have familiarity much less inappropriateness think instead might have appropriate size/name like xxx-watt motor Based favorable letters readers liked September column its five-year index MA writings Several thought editor should have presented stuff conve nient tabular format make cutting out sav ing easier Shame Ross Thanks taking time let know feel ings closing have comment request columns closes invi tation nd comment questions SASE please author ell cer tainly Ive getting more mail lately yupElectric growing Ive experiencing some difficulty responding quickly Id like will always strive respond quickly best can increasing volume times cant quite keep up Its getting routine use up half weekend daywhich out available free time lotjust deal incoming mail So answer bit delayed please bear Ive few letters went unanswered because could read name and/or return addressas well portions letter al ways try hard including getting others try interpret whats written lot unneces sary work frustrating cause want re spond think get idea Often reader will send letter comment like concerning September issue mentioned earlier no answer expected Thank yes sometimes will respond kind anyway whats showing up more readers questions WITHOUT SASE Please folks quarter wont break lots quarters AND time write up missing envelopes can make efforts less pleasant dont think SASE lot ask have questionsdo please dont forget legibility Now Please send comment question latter SASE please ad dress given column heading Happy silent landings everyone RC AerobaticsNan Putte Continued page 51 Obviously requires balsa sheets glued together prior applying fiberglass good idea anyway dont want apply fiberglass before attaching balsa foam can attach balsa foam sheet-by-sheet dont recommend Make up complete skin sheets apply foam Heres own questions same subject Should cut lightening holes foam wings use carbon fiber tape add back lost strength No lower classes Novice Sportsman Advancedand maybe Expert Master because nature patterns being flown FM competition re quires extremely light airplanes AMA competi tion does Consequently dont recommend beginning Pattern fliers go extra trou ble expense However dont infer Im recommending heavy airplanes AMA competition Build light dont take extreme SI tatourcsmpIeleiit5 Send SSAE tsr catalog sh 156 Model Aviation Antiques Iry Civilian Helmlpters SalIpIsnen color FOTO4RAK5KOKIJ-FAN 3-views 50000 piajres stock nnn swings stock FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-7/8 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pleme wed $1 forceeykteflet T&D FIBERGLASS SPECIALTIES 30925 Block Dept 4 Garden City Ml 48135 PHONE 3131 421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CASANES PHONE 3131 261-9064 S AiRES MtLLS 5ET/S BOOKS PRECSI0N TNSTRJMENTS 1i- _COMPiETE COTALOG 200 /E Ch 4MPIELL DLS Ce 2100 8 SeE, Road Sprogte1d 5, 45505 mpa513 3428562 measures achieve 3 I have read fliers use YS Rossi engines have used OS several months still runs fine Would rec ommend three No Any three engines mentioned would job beginning Pattern fliers addition several other engines would also competitive lower AMA classes Included choices could Fox Eagle 60 K&B 61 Supertigre S61 Como 61 HP 61 HR 61 Surprised answer Remember question about what needed beginfling Pattern flier what top-level Pattern flier would require demands lowerlevel class patterns severe up per levels Consequently airplanes dont need capable can heavier dont need powerful engine bonus slightly less powerful engines dont cost much either 4 While Nats also noticed fliers aileron servos mounted outside wing reason clarify question what noticed aileron servos mounted wing about halfway out tip servo output shaft servo arm pushrod exposed aile ron driven externally pushrod tached horn aileron two reasons doing first positive control aileron conventional Z-link torque system could provide Most airplanes employ tech nique have half-span ailerons conven tional torque system would require long torque tube resulting springy aileron old-fashioned system involving bellcranks Out wing driven cen trally located servo operating long pushrods usu ally has unacceptable slop aileron doesnt come back same neutral point time Similar problems experienced using nylon pushrods have curved 900 centrally located servo second reason using aileron servos im bedded wing combat aileron flutter rigid aileron linkage higher flutter speed will conventional torque system has always plagued aileron flut ter because flexibility torque tube imbedded aileron servo located close aileron control horn avoids potential problem 5 How determine best length tuned pipe Ive paraphrased lost ques tian purposes brevity clarityR VP referred April 1988 column pp 133134 mentioned MACS put out good chart determining pipe length pipes also good estimate other manufacturers pipes could write whole column subject tuned pipes can really get essence next five para graphs ideal length tuned pipe function engine propeller airplane best have pipe length bit too long too short Making pipe too short results needle valve setting being excessively sensitive what airplane doing Longer-than-optimum pipe lengths take bit off maximum power also broaden out needle valve response Higher-pitched/larger-diameter propellers re quite longer pipe length lowerpitched/smaller-diameter propellers Optimum pipe length function engine rpm engine cant turn high-pitch/large-diameter prop fast can lower-pitch/smallerdiameter prop determine best pipe length must use trial error prop youve chosen length header pipe purchased set needle valve maximum engine rpm Cut header reset needle valve maximum rpm Note increase rpm Cut another try again Keep up until notice rpm isnt increasing much time shorten pipe Thats Id stop could continue cut smaller amounts pipe header until cant detect improvement cut next Thats peak length think its too short pipe maneuvers Okay now know best pipe length best prop used setting pipe length put another prop youll probably find different best pipe length Which prop best pipe length will give performance want dont know Thats up Nobody better judge whats right airplane Good luck Thanks Peter got whole column Out letter hope lot new Pattern fliers able derive some useful information RC Scale/Wischers Continued page 53 ficiently time really high-quality Scale model construction begins rearward deflec tion isnt longer necessary Scale model expected land prototypical manner tail low three-point landing taildragger mains tricycle gear Singlestrut gears usually angled slightly forward force vectors landing loads sup posedly directly along strut axis shock struts past 15 18 years PRECISION MODEL PRODUCTS MadeintheUSA BARSTOCK ALUMINUM SPINNERS Pan NaSize 11-150-B 1-112 T1-175-B .. 1314 T1-200-B 2 11-225-B.. 21/4 TT-226-B . 2114 FAt TT-250-B 2112 TT-251-B FAt .. TT-275-B.. 2-3/4 11-276-B.. 2-3/4 IFAI TT-300-B3 TT-301-B Il TT-325-B . 3-1/4 50-B.. 3-112 TT-375-B 4 TT-400-B etailApprox PriceWeight $1395058 oz 149509502 1595100gz 1695160oz 1895150oz 189519002 209517002 229522002 249520002 2695260oz 289525002 369534002 4995470oz 599552002 699557002 3 Pieces Cone Back Plale Relainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Pan No Size TT-140-A 1/4-28 1T-147-A 1/4-28/7mn tT610-A 6 x 10mm TT-710-A 10mm TT-516-A -24 TI-SiB-A5/1624/Bnn TT-810-A8 x lOun TT-825-A8 x 125mm TT-375-A318-24 TT-125-AlOx 125nm Retail Appros Price Weight S495 061 02 495 .O6loz 495 . 06302 495 02 495 176oz 49507602 495076oz 495 O7Soz 595 117 02 595 11502 3 Pieces Nul Washer arid Machined Bushing Add $350 Shipping Handling Prices suhiecl change wilhoul nolice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 December 1988 157 DIESELS PAW QUICKSTART 03 35 R/C STO Send $1 Info ERIC CLUTTON 913 Cedar Lane Tullahoma TN 37388 PROP NUT ADAPTORS V FOAM CORE FLOATS PLANS AND KITS WE OFFER SELECTION OF FLOAT PLANS AND KITS FOR 4 12 POUND AIRPLANES WITH Y HULL SIGN IN USE SINCE 1972 SEND SASE FOR CArALOG SHEET KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK NJ 07066 Large Scale Miniasure Aircraft Denigo cod Dwine i-ib ilali iMAA 1488 1 16 Scam Anonc C-3 -65 wing27001pp 2 116 Scaio 59C-3 Holidive ing ape3000/pp 32-5116 Scoln 5BD5 Doontleno 93 wing30001pp 4 1/5 5coln AD-3 o5 Dooglon Okyteide3000/pp 5 High Wing enginne, Dee Piene2000/pp Send 295 go compiene nenolog DP Synnenne inn. 1842 1egienieii -macnan TX nose l7l3lggg-96407131054-0059 BALSA PRE FAB AIRCRAFT 40 TO 51 512 AESOMODEL SHARK-SS poo Soogo S~ooldn-o~og SHARK ST 60 opo Topee7 SooIdeoAg 05 W gCo 570cq SSIos FsnqlsCoo og ff A M Gn FIAsIGnoo bb.9~i INTRODUCTORY E AM OP i 9 nOODLING MC VISA COD AINGSWAY ENTEPPRISES SASE4506WILOACRES FOR CA ALOGHOUSTOI4 TX 77072
Edition: Model Aviation - 1988/12
Page Numbers: 50, 51, 156, 157
WRITING column unusual Hardly two prepared under same conditions example am writing start column motel room Dayton OH after meeting Wright-Patterson AFB concerned F 15E USAFs new ground attack fighter Ill some work column airplanes tween home Fort Walton Beach FL finish home evenings after work Does get boring No sometimes diffi cult come up ideas write about Yes ideas come Mostly self large percentage come readers particular topic youd like information Let know its something general interest have experience youll read about get credit idea topics general interest came 16-year-old aspiring Pattern flier Em manus PA whos flying RC airplanes about year wrote asking lot questions fact signed letter Person Asks Questions Peter Howard Well Peter aspiring Pattern fliers would like some answers questions answers 1 What would great Pattern afrplane buy Peter two ideas Aurora 60 lanta 60 expect Id agree ideas youre partly right Both Aurora lanta fine Pattern airplanes have won lot trophies past few years personally think Aurora better two air planes based what have seen top-level com petition However source question beginning Pattern flier answer has responsive needs beginning Pattern flier flier just starting out Pattern needs airplane will perform maneuvers likely required fly during next year Will Aurora Atianta perform Nov ice Sportsman maneuvers well Yes will lot other fine airplanes Heres partial list other candidates first Pattern airplane Super Curare Tiporare Super Kaos 60 Dash 5 Magic Arrow Acromaster ow lot airplanes equally capa ble complete list would very long point remember selection first 50 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte Ill Sleepy Oaks Rd Ft Walton Beach FL 32548 Jason Shulman won High Point Junior Award Sporlsman 88 Nats placed 5th overallnot bad 14-year-old Plane Blue Angel powered OS 61LS pumper Paul Vitrano cant speak told Van Putte via alphabet card can fly RC thanks friends like Bob McLain Jack son MS reworked Futaba transmit ter could operate Paul attends contests LA MS FL Peter Howard aspiring Pattern flier shows off Great Planes Super Sportster 40 now flies questions Van Putte prompted months column closed letter re quest Ron tell Chip Hyde am coming after him airplane airplane capable winning highest levels competition necessary success lower levels competition fact may desirable select other airplanes Ill explain part answer Peters next two questions 2 How difficult build airplanes Aurora AdantaR VP have worked traditional style building balsa instant glue Would need other skills techniques build fiberglass foam have built Aurora discussions fliers have indicate building fuselage complicated very difficult ail highly experienced builder reason would recommend Aurora first Pat tern airplane Fiberglass fuselages take few special tech niques Although fiberglass fuselages now made epoxy resin few con structed polyester resin should use epoxy glues polyester resin fiberglass fuse lages vice versa because dont bond other very well would just troublesome have firewall servo rails pop loose inside fuselage wrong kind resin used glue Keeping horizontal tail attached fiber glass fuselage can also headache fuse lage received tail post already installed rear vertical fin nearly impossi ble get inner portion joint between fuselage horizontal tail once hori zontal tail has installed bad situa tion because normal wear tear air plane especially picking up tail can cause fuselage sides come loose exterior fillets have emplaced join two parts true because theres usu ally nothing support fuselage shell inside solution problem remove part tail post permit aceess inside fuselage/horizontal-tail joint install crude dont have pretty fillets inside fuselage using microballoons ep oxy glue polyester appropriate applied disposable brush cant dont want remove tail post can install supports inside fuselage before attaching horizontal tail Have run side side fuselage cut accept tail will keep fuselage sides squeezing together area will aid maintaining joint between two compo nents think fiberglass fuselages easier build balsa ones example fiberglass fuselages usually come wing fillets molded fillets must constructed balsa fuselages Its small task good job installing wing fillets balsa fuselage other fuselage details like canopy pushrod exit guides engine cowling molded fiberglass fuselages must fabricated balsa fuselages recommend use fiberglass fuselage above reasons also because re sistance dings normal use still leaves lot great airplanes beginning Pattern flier choose still havent answered part question about skills techniques required foam trying part building foam applying balsa foam doesnt come nat urally isnt really very difficult As men tioned October column like apply fiber glass cloth balsa skin before attaching balsa foam Continued page 156 Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultrallgbt Honeycomb Wingeores extra 940460 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9556 116 st. North Delta British Columbia 6Z4 Canada 604-588-0605 December 1988 51 High Performance Models presents ECLIPSE Designed Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Basic Kit $15000 Pro-Built Kit $35000 add $1500 S&H Send Check Money Order r NO MORE KICKBACKS THROWN PROPS popular bes se ng add gn system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 8 4 stroke both single & twin cylinders 4-strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-beck throwing props Absolutely no pro-detonation death 4-stroke engines Much lower priced fuel no rusty bearings commercial fuel available Red-Max Very low 900-1000 rmp reliable idle easy hand starts can control ignition timing will stop pro-detonation engine will ron mudi cooler develop power Now available conyletely shielded spark plug lead 90 plug cover Chosen T&G Mfg & gyros Originals f its outstanding reliability Send $t 00 price list newsletter ordering Box 1732 Riverton WY 82501 307 857-6897 CH Electronics Inc Made USA Curtiss Jenny * Quality hand-cut kit complete plans rigging scale control setup wire parts pre-bent special hardware included parts individually indentified packaged Decals Major Decal * Engine sizes 20 40 FS 25 TS * Wing unit removes four screws less 3 minutes flying wires left intact * Superb flight characteristics Introductory Price 13900 VISA erCard e Money Order Michigan residenta add 4% aalea tax Add $550 P&H US orders $1250 foreign Video Catalog $1250 Ipoat nciVHSIBeta *5 rebate return tape kit order Reg catalog sample mini-plan -$2 Hand-Cut Quality Affordable Price AERODROME MODELS LTD 2623 S Miller Rd __ TY__Saginaw Ml 48603 517 781-3000 Other Kits Available Ama-Pacer Baby -Pacer Gipey Moth Rybaby Flybeby Combo Hawker Hurricane Jeater trol built ceramic substrate using surface mount components solder reflow techniques Thats righttheres no printed circuit board product shown SM-4 much thinner time-honored SC-4 Also will have about 30% less drop latter Joe also has works really stnall version already small SC-5 well ceramic-based On/Off switches Preliminary pricing above products $95 charger timer kit $120 assem bled $85 SM-4 $70 SM-5 write Jomar 2028 Knights Bridge Drive Cincinnati OH 45244 info place order tell em ya read MA new products spoke Bob Boucher Astro recently tells Astro will soon offer constant-current version famous DC/DC Super Charger As spoke PC board design estimate availability before spring 89 Bob also has some newer ver sions lower-cost models charger line coming along See what mean Electric REALLY GROWING poignant thought offered readers Mr Dan Minor Marlboro MA recent letter offered following Earth needs ozone castor oil Ozone gas pungent smell ten generated result electrical sparks such occurring motor commutators yes depletion high-altitude ozone layer around earth caused exten sive release fluorocarbons atmo sphere ordinarily blocks suns UV rays gollynow have just hobby rea son go Electric have eco-cause wit Save EarthFly Electric Something ponder Lets pretend mo ment gas engines never existed No family car know lawn mower model en gines What pray tell would call OHFIVE meaningless nomenclature would have familiarity much less inappropriateness think instead might have appropriate size/name like xxx-watt motor Based favorable letters readers liked September column its five-year index MA writings Several thought editor should have presented stuff conve nient tabular format make cutting out sav ing easier Shame Ross Thanks taking time let know feel ings closing have comment request columns closes invi tation nd comment questions SASE please author ell cer tainly Ive getting more mail lately yupElectric growing Ive experiencing some difficulty responding quickly Id like will always strive respond quickly best can increasing volume times cant quite keep up Its getting routine use up half weekend daywhich out available free time lotjust deal incoming mail So answer bit delayed please bear Ive few letters went unanswered because could read name and/or return addressas well portions letter al ways try hard including getting others try interpret whats written lot unneces sary work frustrating cause want re spond think get idea Often reader will send letter comment like concerning September issue mentioned earlier no answer expected Thank yes sometimes will respond kind anyway whats showing up more readers questions WITHOUT SASE Please folks quarter wont break lots quarters AND time write up missing envelopes can make efforts less pleasant dont think SASE lot ask have questionsdo please dont forget legibility Now Please send comment question latter SASE please ad dress given column heading Happy silent landings everyone RC AerobaticsNan Putte Continued page 51 Obviously requires balsa sheets glued together prior applying fiberglass good idea anyway dont want apply fiberglass before attaching balsa foam can attach balsa foam sheet-by-sheet dont recommend Make up complete skin sheets apply foam Heres own questions same subject Should cut lightening holes foam wings use carbon fiber tape add back lost strength No lower classes Novice Sportsman Advancedand maybe Expert Master because nature patterns being flown FM competition re quires extremely light airplanes AMA competi tion does Consequently dont recommend beginning Pattern fliers go extra trou ble expense However dont infer Im recommending heavy airplanes AMA competition Build light dont take extreme SI tatourcsmpIeleiit5 Send SSAE tsr catalog sh 156 Model Aviation Antiques Iry Civilian Helmlpters SalIpIsnen color FOTO4RAK5KOKIJ-FAN 3-views 50000 piajres stock nnn swings stock FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-7/8 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pleme wed $1 forceeykteflet T&D FIBERGLASS SPECIALTIES 30925 Block Dept 4 Garden City Ml 48135 PHONE 3131 421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CASANES PHONE 3131 261-9064 S AiRES MtLLS 5ET/S BOOKS PRECSI0N TNSTRJMENTS 1i- _COMPiETE COTALOG 200 /E Ch 4MPIELL DLS Ce 2100 8 SeE, Road Sprogte1d 5, 45505 mpa513 3428562 measures achieve 3 I have read fliers use YS Rossi engines have used OS several months still runs fine Would rec ommend three No Any three engines mentioned would job beginning Pattern fliers addition several other engines would also competitive lower AMA classes Included choices could Fox Eagle 60 K&B 61 Supertigre S61 Como 61 HP 61 HR 61 Surprised answer Remember question about what needed beginfling Pattern flier what top-level Pattern flier would require demands lowerlevel class patterns severe up per levels Consequently airplanes dont need capable can heavier dont need powerful engine bonus slightly less powerful engines dont cost much either 4 While Nats also noticed fliers aileron servos mounted outside wing reason clarify question what noticed aileron servos mounted wing about halfway out tip servo output shaft servo arm pushrod exposed aile ron driven externally pushrod tached horn aileron two reasons doing first positive control aileron conventional Z-link torque system could provide Most airplanes employ tech nique have half-span ailerons conven tional torque system would require long torque tube resulting springy aileron old-fashioned system involving bellcranks Out wing driven cen trally located servo operating long pushrods usu ally has unacceptable slop aileron doesnt come back same neutral point time Similar problems experienced using nylon pushrods have curved 900 centrally located servo second reason using aileron servos im bedded wing combat aileron flutter rigid aileron linkage higher flutter speed will conventional torque system has always plagued aileron flut ter because flexibility torque tube imbedded aileron servo located close aileron control horn avoids potential problem 5 How determine best length tuned pipe Ive paraphrased lost ques tian purposes brevity clarityR VP referred April 1988 column pp 133134 mentioned MACS put out good chart determining pipe length pipes also good estimate other manufacturers pipes could write whole column subject tuned pipes can really get essence next five para graphs ideal length tuned pipe function engine propeller airplane best have pipe length bit too long too short Making pipe too short results needle valve setting being excessively sensitive what airplane doing Longer-than-optimum pipe lengths take bit off maximum power also broaden out needle valve response Higher-pitched/larger-diameter propellers re quite longer pipe length lowerpitched/smaller-diameter propellers Optimum pipe length function engine rpm engine cant turn high-pitch/large-diameter prop fast can lower-pitch/smallerdiameter prop determine best pipe length must use trial error prop youve chosen length header pipe purchased set needle valve maximum engine rpm Cut header reset needle valve maximum rpm Note increase rpm Cut another try again Keep up until notice rpm isnt increasing much time shorten pipe Thats Id stop could continue cut smaller amounts pipe header until cant detect improvement cut next Thats peak length think its too short pipe maneuvers Okay now know best pipe length best prop used setting pipe length put another prop youll probably find different best pipe length Which prop best pipe length will give performance want dont know Thats up Nobody better judge whats right airplane Good luck Thanks Peter got whole column Out letter hope lot new Pattern fliers able derive some useful information RC Scale/Wischers Continued page 53 ficiently time really high-quality Scale model construction begins rearward deflec tion isnt longer necessary Scale model expected land prototypical manner tail low three-point landing taildragger mains tricycle gear Singlestrut gears usually angled slightly forward force vectors landing loads sup posedly directly along strut axis shock struts past 15 18 years PRECISION MODEL PRODUCTS MadeintheUSA BARSTOCK ALUMINUM SPINNERS Pan NaSize 11-150-B 1-112 T1-175-B .. 1314 T1-200-B 2 11-225-B.. 21/4 TT-226-B . 2114 FAt TT-250-B 2112 TT-251-B FAt .. TT-275-B.. 2-3/4 11-276-B.. 2-3/4 IFAI TT-300-B3 TT-301-B Il TT-325-B . 3-1/4 50-B.. 3-112 TT-375-B 4 TT-400-B etailApprox PriceWeight $1395058 oz 149509502 1595100gz 1695160oz 1895150oz 189519002 209517002 229522002 249520002 2695260oz 289525002 369534002 4995470oz 599552002 699557002 3 Pieces Cone Back Plale Relainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Pan No Size TT-140-A 1/4-28 1T-147-A 1/4-28/7mn tT610-A 6 x 10mm TT-710-A 10mm TT-516-A -24 TI-SiB-A5/1624/Bnn TT-810-A8 x lOun TT-825-A8 x 125mm TT-375-A318-24 TT-125-AlOx 125nm Retail Appros Price Weight S495 061 02 495 .O6loz 495 . 06302 495 02 495 176oz 49507602 495076oz 495 O7Soz 595 117 02 595 11502 3 Pieces Nul Washer arid Machined Bushing Add $350 Shipping Handling Prices suhiecl change wilhoul nolice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 December 1988 157 DIESELS PAW QUICKSTART 03 35 R/C STO Send $1 Info ERIC CLUTTON 913 Cedar Lane Tullahoma TN 37388 PROP NUT ADAPTORS V FOAM CORE FLOATS PLANS AND KITS WE OFFER SELECTION OF FLOAT PLANS AND KITS FOR 4 12 POUND AIRPLANES WITH Y HULL SIGN IN USE SINCE 1972 SEND SASE FOR CArALOG SHEET KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK NJ 07066 Large Scale Miniasure Aircraft Denigo cod Dwine i-ib ilali iMAA 1488 1 16 Scam Anonc C-3 -65 wing27001pp 2 116 Scaio 59C-3 Holidive ing ape3000/pp 32-5116 Scoln 5BD5 Doontleno 93 wing30001pp 4 1/5 5coln AD-3 o5 Dooglon Okyteide3000/pp 5 High Wing enginne, Dee Piene2000/pp Send 295 go compiene nenolog DP Synnenne inn. 1842 1egienieii -macnan TX nose l7l3lggg-96407131054-0059 BALSA PRE FAB AIRCRAFT 40 TO 51 512 AESOMODEL SHARK-SS poo Soogo S~ooldn-o~og SHARK ST 60 opo Topee7 SooIdeoAg 05 W gCo 570cq SSIos FsnqlsCoo og ff A M Gn FIAsIGnoo bb.9~i INTRODUCTORY E AM OP i 9 nOODLING MC VISA COD AINGSWAY ENTEPPRISES SASE4506WILOACRES FOR CA ALOGHOUSTOI4 TX 77072
Edition: Model Aviation - 1988/12
Page Numbers: 50, 51, 156, 157
WRITING column unusual Hardly two prepared under same conditions example am writing start column motel room Dayton OH after meeting Wright-Patterson AFB concerned F 15E USAFs new ground attack fighter Ill some work column airplanes tween home Fort Walton Beach FL finish home evenings after work Does get boring No sometimes diffi cult come up ideas write about Yes ideas come Mostly self large percentage come readers particular topic youd like information Let know its something general interest have experience youll read about get credit idea topics general interest came 16-year-old aspiring Pattern flier Em manus PA whos flying RC airplanes about year wrote asking lot questions fact signed letter Person Asks Questions Peter Howard Well Peter aspiring Pattern fliers would like some answers questions answers 1 What would great Pattern afrplane buy Peter two ideas Aurora 60 lanta 60 expect Id agree ideas youre partly right Both Aurora lanta fine Pattern airplanes have won lot trophies past few years personally think Aurora better two air planes based what have seen top-level com petition However source question beginning Pattern flier answer has responsive needs beginning Pattern flier flier just starting out Pattern needs airplane will perform maneuvers likely required fly during next year Will Aurora Atianta perform Nov ice Sportsman maneuvers well Yes will lot other fine airplanes Heres partial list other candidates first Pattern airplane Super Curare Tiporare Super Kaos 60 Dash 5 Magic Arrow Acromaster ow lot airplanes equally capa ble complete list would very long point remember selection first 50 Model Aviation Radio Conoi Sport Aerobatics Ron Van Putte Ill Sleepy Oaks Rd Ft Walton Beach FL 32548 Jason Shulman won High Point Junior Award Sporlsman 88 Nats placed 5th overallnot bad 14-year-old Plane Blue Angel powered OS 61LS pumper Paul Vitrano cant speak told Van Putte via alphabet card can fly RC thanks friends like Bob McLain Jack son MS reworked Futaba transmit ter could operate Paul attends contests LA MS FL Peter Howard aspiring Pattern flier shows off Great Planes Super Sportster 40 now flies questions Van Putte prompted months column closed letter re quest Ron tell Chip Hyde am coming after him airplane airplane capable winning highest levels competition necessary success lower levels competition fact may desirable select other airplanes Ill explain part answer Peters next two questions 2 How difficult build airplanes Aurora AdantaR VP have worked traditional style building balsa instant glue Would need other skills techniques build fiberglass foam have built Aurora discussions fliers have indicate building fuselage complicated very difficult ail highly experienced builder reason would recommend Aurora first Pat tern airplane Fiberglass fuselages take few special tech niques Although fiberglass fuselages now made epoxy resin few con structed polyester resin should use epoxy glues polyester resin fiberglass fuse lages vice versa because dont bond other very well would just troublesome have firewall servo rails pop loose inside fuselage wrong kind resin used glue Keeping horizontal tail attached fiber glass fuselage can also headache fuse lage received tail post already installed rear vertical fin nearly impossi ble get inner portion joint between fuselage horizontal tail once hori zontal tail has installed bad situa tion because normal wear tear air plane especially picking up tail can cause fuselage sides come loose exterior fillets have emplaced join two parts true because theres usu ally nothing support fuselage shell inside solution problem remove part tail post permit aceess inside fuselage/horizontal-tail joint install crude dont have pretty fillets inside fuselage using microballoons ep oxy glue polyester appropriate applied disposable brush cant dont want remove tail post can install supports inside fuselage before attaching horizontal tail Have run side side fuselage cut accept tail will keep fuselage sides squeezing together area will aid maintaining joint between two compo nents think fiberglass fuselages easier build balsa ones example fiberglass fuselages usually come wing fillets molded fillets must constructed balsa fuselages Its small task good job installing wing fillets balsa fuselage other fuselage details like canopy pushrod exit guides engine cowling molded fiberglass fuselages must fabricated balsa fuselages recommend use fiberglass fuselage above reasons also because re sistance dings normal use still leaves lot great airplanes beginning Pattern flier choose still havent answered part question about skills techniques required foam trying part building foam applying balsa foam doesnt come nat urally isnt really very difficult As men tioned October column like apply fiber glass cloth balsa skin before attaching balsa foam Continued page 156 Plug Wings rglass Belly Pan Pre-Cut Holes Wing Joiner Tubes Ultrallgbt Honeycomb Wingeores extra 940460 Optional Plastic Fiberglass Canopy Fiberglass Fuselage molded wing Joiner tube HIGH PERFORMANCE MODELS 9556 116 st. North Delta British Columbia 6Z4 Canada 604-588-0605 December 1988 51 High Performance Models presents ECLIPSE Designed Henry Piorun Former Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Basic Kit $15000 Pro-Built Kit $35000 add $1500 S&H Send Check Money Order r NO MORE KICKBACKS THROWN PROPS popular bes se ng add gn system world Convert engine spark ignition breakerless capacitive discharge Ignition System can installed engines 60 up both 2 8 4 stroke both single & twin cylinders 4-strokers run absolutely beautiful ignition 10 30% power 4-stroke engine No kick-beck throwing props Absolutely no pro-detonation death 4-stroke engines Much lower priced fuel no rusty bearings commercial fuel available Red-Max Very low 900-1000 rmp reliable idle easy hand starts can control ignition timing will stop pro-detonation engine will ron mudi cooler develop power Now available conyletely shielded spark plug lead 90 plug cover Chosen T&G Mfg & gyros Originals f its outstanding reliability Send $t 00 price list newsletter ordering Box 1732 Riverton WY 82501 307 857-6897 CH Electronics Inc Made USA Curtiss Jenny * Quality hand-cut kit complete plans rigging scale control setup wire parts pre-bent special hardware included parts individually indentified packaged Decals Major Decal * Engine sizes 20 40 FS 25 TS * Wing unit removes four screws less 3 minutes flying wires left intact * Superb flight characteristics Introductory Price 13900 VISA erCard e Money Order Michigan residenta add 4% aalea tax Add $550 P&H US orders $1250 foreign Video Catalog $1250 Ipoat nciVHSIBeta *5 rebate return tape kit order Reg catalog sample mini-plan -$2 Hand-Cut Quality Affordable Price AERODROME MODELS LTD 2623 S Miller Rd __ TY__Saginaw Ml 48603 517 781-3000 Other Kits Available Ama-Pacer Baby -Pacer Gipey Moth Rybaby Flybeby Combo Hawker Hurricane Jeater trol built ceramic substrate using surface mount components solder reflow techniques Thats righttheres no printed circuit board product shown SM-4 much thinner time-honored SC-4 Also will have about 30% less drop latter Joe also has works really stnall version already small SC-5 well ceramic-based On/Off switches Preliminary pricing above products $95 charger timer kit $120 assem bled $85 SM-4 $70 SM-5 write Jomar 2028 Knights Bridge Drive Cincinnati OH 45244 info place order tell em ya read MA new products spoke Bob Boucher Astro recently tells Astro will soon offer constant-current version famous DC/DC Super Charger As spoke PC board design estimate availability before spring 89 Bob also has some newer ver sions lower-cost models charger line coming along See what mean Electric REALLY GROWING poignant thought offered readers Mr Dan Minor Marlboro MA recent letter offered following Earth needs ozone castor oil Ozone gas pungent smell ten generated result electrical sparks such occurring motor commutators yes depletion high-altitude ozone layer around earth caused exten sive release fluorocarbons atmo sphere ordinarily blocks suns UV rays gollynow have just hobby rea son go Electric have eco-cause wit Save EarthFly Electric Something ponder Lets pretend mo ment gas engines never existed No family car know lawn mower model en gines What pray tell would call OHFIVE meaningless nomenclature would have familiarity much less inappropriateness think instead might have appropriate size/name like xxx-watt motor Based favorable letters readers liked September column its five-year index MA writings Several thought editor should have presented stuff conve nient tabular format make cutting out sav ing easier Shame Ross Thanks taking time let know feel ings closing have comment request columns closes invi tation nd comment questions SASE please author ell cer tainly Ive getting more mail lately yupElectric growing Ive experiencing some difficulty responding quickly Id like will always strive respond quickly best can increasing volume times cant quite keep up Its getting routine use up half weekend daywhich out available free time lotjust deal incoming mail So answer bit delayed please bear Ive few letters went unanswered because could read name and/or return addressas well portions letter al ways try hard including getting others try interpret whats written lot unneces sary work frustrating cause want re spond think get idea Often reader will send letter comment like concerning September issue mentioned earlier no answer expected Thank yes sometimes will respond kind anyway whats showing up more readers questions WITHOUT SASE Please folks quarter wont break lots quarters AND time write up missing envelopes can make efforts less pleasant dont think SASE lot ask have questionsdo please dont forget legibility Now Please send comment question latter SASE please ad dress given column heading Happy silent landings everyone RC AerobaticsNan Putte Continued page 51 Obviously requires balsa sheets glued together prior applying fiberglass good idea anyway dont want apply fiberglass before attaching balsa foam can attach balsa foam sheet-by-sheet dont recommend Make up complete skin sheets apply foam Heres own questions same subject Should cut lightening holes foam wings use carbon fiber tape add back lost strength No lower classes Novice Sportsman Advancedand maybe Expert Master because nature patterns being flown FM competition re quires extremely light airplanes AMA competi tion does Consequently dont recommend beginning Pattern fliers go extra trou ble expense However dont infer Im recommending heavy airplanes AMA competition Build light dont take extreme SI tatourcsmpIeleiit5 Send SSAE tsr catalog sh 156 Model Aviation Antiques Iry Civilian Helmlpters SalIpIsnen color FOTO4RAK5KOKIJ-FAN 3-views 50000 piajres stock nnn swings stock FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-7/8 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pleme wed $1 forceeykteflet T&D FIBERGLASS SPECIALTIES 30925 Block Dept 4 Garden City Ml 48135 PHONE 3131 421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CASANES PHONE 3131 261-9064 S AiRES MtLLS 5ET/S BOOKS PRECSI0N TNSTRJMENTS 1i- _COMPiETE COTALOG 200 /E Ch 4MPIELL DLS Ce 2100 8 SeE, Road Sprogte1d 5, 45505 mpa513 3428562 measures achieve 3 I have read fliers use YS Rossi engines have used OS several months still runs fine Would rec ommend three No Any three engines mentioned would job beginning Pattern fliers addition several other engines would also competitive lower AMA classes Included choices could Fox Eagle 60 K&B 61 Supertigre S61 Como 61 HP 61 HR 61 Surprised answer Remember question about what needed beginfling Pattern flier what top-level Pattern flier would require demands lowerlevel class patterns severe up per levels Consequently airplanes dont need capable can heavier dont need powerful engine bonus slightly less powerful engines dont cost much either 4 While Nats also noticed fliers aileron servos mounted outside wing reason clarify question what noticed aileron servos mounted wing about halfway out tip servo output shaft servo arm pushrod exposed aile ron driven externally pushrod tached horn aileron two reasons doing first positive control aileron conventional Z-link torque system could provide Most airplanes employ tech nique have half-span ailerons conven tional torque system would require long torque tube resulting springy aileron old-fashioned system involving bellcranks Out wing driven cen trally located servo operating long pushrods usu ally has unacceptable slop aileron doesnt come back same neutral point time Similar problems experienced using nylon pushrods have curved 900 centrally located servo second reason using aileron servos im bedded wing combat aileron flutter rigid aileron linkage higher flutter speed will conventional torque system has always plagued aileron flut ter because flexibility torque tube imbedded aileron servo located close aileron control horn avoids potential problem 5 How determine best length tuned pipe Ive paraphrased lost ques tian purposes brevity clarityR VP referred April 1988 column pp 133134 mentioned MACS put out good chart determining pipe length pipes also good estimate other manufacturers pipes could write whole column subject tuned pipes can really get essence next five para graphs ideal length tuned pipe function engine propeller airplane best have pipe length bit too long too short Making pipe too short results needle valve setting being excessively sensitive what airplane doing Longer-than-optimum pipe lengths take bit off maximum power also broaden out needle valve response Higher-pitched/larger-diameter propellers re quite longer pipe length lowerpitched/smaller-diameter propellers Optimum pipe length function engine rpm engine cant turn high-pitch/large-diameter prop fast can lower-pitch/smallerdiameter prop determine best pipe length must use trial error prop youve chosen length header pipe purchased set needle valve maximum engine rpm Cut header reset needle valve maximum rpm Note increase rpm Cut another try again Keep up until notice rpm isnt increasing much time shorten pipe Thats Id stop could continue cut smaller amounts pipe header until cant detect improvement cut next Thats peak length think its too short pipe maneuvers Okay now know best pipe length best prop used setting pipe length put another prop youll probably find different best pipe length Which prop best pipe length will give performance want dont know Thats up Nobody better judge whats right airplane Good luck Thanks Peter got whole column Out letter hope lot new Pattern fliers able derive some useful information RC Scale/Wischers Continued page 53 ficiently time really high-quality Scale model construction begins rearward deflec tion isnt longer necessary Scale model expected land prototypical manner tail low three-point landing taildragger mains tricycle gear Singlestrut gears usually angled slightly forward force vectors landing loads sup posedly directly along strut axis shock struts past 15 18 years PRECISION MODEL PRODUCTS MadeintheUSA BARSTOCK ALUMINUM SPINNERS Pan NaSize 11-150-B 1-112 T1-175-B .. 1314 T1-200-B 2 11-225-B.. 21/4 TT-226-B . 2114 FAt TT-250-B 2112 TT-251-B FAt .. TT-275-B.. 2-3/4 11-276-B.. 2-3/4 IFAI TT-300-B3 TT-301-B Il TT-325-B . 3-1/4 50-B.. 3-112 TT-375-B 4 TT-400-B etailApprox PriceWeight $1395058 oz 149509502 1595100gz 1695160oz 1895150oz 189519002 209517002 229522002 249520002 2695260oz 289525002 369534002 4995470oz 599552002 699557002 3 Pieces Cone Back Plale Relainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Pan No Size TT-140-A 1/4-28 1T-147-A 1/4-28/7mn tT610-A 6 x 10mm TT-710-A 10mm TT-516-A -24 TI-SiB-A5/1624/Bnn TT-810-A8 x lOun TT-825-A8 x 125mm TT-375-A318-24 TT-125-AlOx 125nm Retail Appros Price Weight S495 061 02 495 .O6loz 495 . 06302 495 02 495 176oz 49507602 495076oz 495 O7Soz 595 117 02 595 11502 3 Pieces Nul Washer arid Machined Bushing Add $350 Shipping Handling Prices suhiecl change wilhoul nolice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 December 1988 157 DIESELS PAW QUICKSTART 03 35 R/C STO Send $1 Info ERIC CLUTTON 913 Cedar Lane Tullahoma TN 37388 PROP NUT ADAPTORS V FOAM CORE FLOATS PLANS AND KITS WE OFFER SELECTION OF FLOAT PLANS AND KITS FOR 4 12 POUND AIRPLANES WITH Y HULL SIGN IN USE SINCE 1972 SEND SASE FOR CArALOG SHEET KIRCHER R/C PRODUCTS INC 9 SHEFFIELD WAY CLARK NJ 07066 Large Scale Miniasure Aircraft Denigo cod Dwine i-ib ilali iMAA 1488 1 16 Scam Anonc C-3 -65 wing27001pp 2 116 Scaio 59C-3 Holidive ing ape3000/pp 32-5116 Scoln 5BD5 Doontleno 93 wing30001pp 4 1/5 5coln AD-3 o5 Dooglon Okyteide3000/pp 5 High Wing enginne, Dee Piene2000/pp Send 295 go compiene nenolog DP Synnenne inn. 1842 1egienieii -macnan TX nose l7l3lggg-96407131054-0059 BALSA PRE FAB AIRCRAFT 40 TO 51 512 AESOMODEL SHARK-SS poo Soogo S~ooldn-o~og SHARK ST 60 opo Topee7 SooIdeoAg 05 W gCo 570cq SSIos FsnqlsCoo og ff A M Gn FIAsIGnoo bb.9~i INTRODUCTORY E AM OP i 9 nOODLING MC VISA COD AINGSWAY ENTEPPRISES SASE4506WILOACRES FOR CA ALOGHOUSTOI4 TX 77072