iz_____ RADIO CONTROL John de Vries 4610 Moffat Lane OoIQrado Springs 0080915 WAY BACK days before WW II Dick Smith graduated high school together Although both became pilots Uncle Sam lost track other until late seventies discovered both fascinated Giant Scale met hometown Rochester New York Since weve kept touch have met hotbeds Giant Scale Olean New York STARs meets Las Vegas QSAA fun flys Dick now lives Hemet California Colorado Springs Im mailing list Century Flier newsletter Inland Empire Giant Flyers IMAA Chapter 100 Dick edits month Dick master model builder spent postwar life production engineer Eastman Kodak Company Giant Scale before words coined recent issue newsletter described techniques muffling gas burners lot us use felt technique explanation should have much wider audience So heres practical how-to noise abatement drive evident late has become necessary show some concern about noise big engines make Most aircraft Giant Scale powered chain saw engines complaints neighbors causing imposition noise restrictions Hemet Model Masters field usually fly embarked program quiet engines meet 96 dB nine feet noise limitation noise generated engines combination exhaust propeller rpm vibration Youve probably read about various model magazines approach has try thing time until achieve acceptable noise level Most Giant Scale engines dont turn much over 7000 rpm way prop rpm hasnt problem Lets start Quadra 35 42 both rear-exhaust engines Luckily us Quadra has come out large-volume muffler almost does job itself P-5 1 added baffle halfway across muffler chamber Quadra 42 connected two halves short piece electrical conduit steel tubing brazed everything together setup nets 94-96 dB depending meter used reading Quadra 35 large-volume muffler small biscuit-type muffler lawn mowers brazed onto large mufflers output tube got 96 dB 6400 rpm turning Zinger 8 x 8-14 prop Total cost $18 Quadra muffler $154 lawn mower muffler Several styles small mufflers available Home Depot Home Club stores Zenoah G-38 removed tubes standard JTec muffler tapped holes 1/2-in pipe thread screwed two lawn mower mufflers place cost about two bucks addition /2-in restrictor tube machined muffler outlet job nicely Zero powered Quadra 50 side exhaust tapped out JTec muffler installed two /2-in pipe elbows 46 Model Aviation Clipped-wing Monocoupe 110 Special Lynn Lockrow Quarter-scale own plans Classic Airplans 321 Camellia Drive Auburn AL 36830 wing bofts inside cabin Toby Grether built neat /3-scale J-3 Kitten Dry Ridge Model plans 15-lb airplane has 10-ft wingspan An OS91 Surpass provides juice /7 Plans Avro 504K available Bob Holman rotary-engined WW trainer Stearman its age biplane continued used well twenties Bob Holmans Bristol MiB WW monoplane 1/4scale few monoplanes used Great War Bristol operated primarily Middle East theater operations Original Home Machine Shop Designed USA Shoptask facing rear angled two lawn mower mufflers wouldnt interfere other reduces noise Quadra 50 96 dB loss rpm noise could further reduced addition restrictors ends lawn mower muffler Pitts powered Zenoah G-62 problem difficult because wanted everything enclosed within cowling G-62 stock muffler best have seen unrestricted cowl situation could almost job After tries satisfactory final cure go back G-62 muffler cut off would fit cowl welded plate close up louvers original exhaust outlets also welded end plates place close up muffler added 3/4-in -diameter steel exit tube exhaust outlet second muffler lower cowl area second muffler consisted six-inch piece two-inch-diameter thin-walled aluminum tubing closed ends piece 314-in aluminum tubing brazed place exhaust outlet two mufflers connected piece 314-in inside diameter silicone tubing upper end secured G-62 muffler outlet other end simply inserted 3/4-in hole aluminum tube created flexible joint between two mufflers system netted 94 dB turning 20 x 8-14 prop also gives Pitts good scalelike flight several points Id like make First dont give up engine noise problem can make engines run quietly Second remember large muffler volume smooth transitions between muffler components both important factors consider search noise reduction addition steel wool inside muffler components does help serves reduce muffler volume hinder sound abatement Finally dont Continued page 137 Chuck Valentinos spectacular 1I5scale P-Si Mustang Its loaded bear Note bomb rocket tubes under left wing PLUG IN WINGS -..AIHl-OIL/ l1AILl rut 4LL.. -/cLEANn,t,v,,SIABLEANULHILIENI TMto z 0 0 p Hi-G introduces thejjj~Um 0 0 w COMPLETELY ASSEMBLED & FINISHED OUT OF THE BOX NO GLUE PAINT OR COVERING REQUIRED INSTALL YOUR RADIO 35-46 ENGINE AND PROP AT THE FIELD C COMPUTER DESIGNED & BUILT BY MIT AEROSPACE ENGINEERS INCREDIBLE FLIGHT PERFORMANCE AND QUALITY BUILT-IN 0 VISA & MC Accepted Orders & Info 602-788-5209 Hi-G 2131 E Crocus Dr Phoenix AZ 85022 U Wingspan 47Area 460 sq Assembly Time 6 hrs mas Leoght 42Weight 475-500 lb 0 4 VI 4 C z 0 4 AND INyTALLED HAVES AYES TANK SULLIVAN SKYLITE WWFFI 0 SIIII IVAN PIISIIRIlflS lflNTRfll July1992 47 LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 #RED 03Landing Lights 48V$3995 #RED 04Mars Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 #RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 #RED 16Econo Landing Lights brightest 9V$1995 #RED 23Real Strobe Light true zenon strobe 3V$2995 0 SEE YOUR DEALER S SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card info cost item plus $400 $500 foreignfor immediate shipment include full address U PS Sorry no COD cRam 229 E Rollins Rd d Lake Beach IL 60073 wings two reasons First people unfamiliar vacuum-bagging techniques structural integrity composite materials see pinholes flashing other visual blemishes structural flaws Second molded wings wing exactly same shape size always case vacuum bagging Molded wings will allow us have cleaner-looking finished product higher quality control product exacfly same part part As end March Ive heard Greg Chun other engineers Greco doing molded wings Will pass along news get 4 warbirds has recently announced fiberglass fuselages Doss Steeds 92-in P-51D Mustang available youre have difficulty documenting some obscure WW II aircraft take heart Jim Elena Gilman Ranger Fiberglass Co PO Box 879 Campton NH 03223 have catalog jam-packed three-views spec sheets Most drawings available /24- 1/48-scale So youve got hots birds like Fairchild AT-13 Westland Welkin Jim Elena have data also provide comprehensive list own drawings wonder wonders dont have particular drawing voluminous files theyll custom draw stand corrected back discussion treating machine gun smudges smoke streaks light hand noted red duct tape used seal blast tubes red tape correct US fighters taint British compatriots Jim Kemble Madison Connecticut allowed Spitfires other Commonwealth fighters gun ports sealed two layers fabric red doped place Jim enclosed Xeroxed page Spitfire Mk V service manual ified technique Continued page 138 RC Giants/do Vries Continued page 47 prop engines turning over 7200 rpm Increase prop pitch and/or diameter minimize noise prop makes youll still maintain performance air moral Dicks story twofold First number things can minimize noise gas burners generate Second dont have talent modify existing mufflers itd behoove find guy needed torches other equipment job Quiet name game Heres latest great guys DW Aircraft 409 Mid Pines Way Modesto CA 95354 telephone 209/522-7597 recently sent copy catalog DW has complete line semikits Giant Scale models Most em include epoxy fiberglass fuselages foam core wings stabs fins well clear canopies supply own wood days spiraling kit costs DWs semikit prices refreshing Most $225 range DWs catalog dollara real bargain familiar Bill Hannans column Model Builder know always begins appropriate bit philosophy now has virtually inexhaustible supply provided great Frank Zaic Frank has written book differs substantially prior publicationsdefinitive studies model aeronautics Frankly Speaking collection Franks reminiscences its nearly autobiography found thoroughly fascinating book available $695 plus P&H Hannans Runway PO Box 210 Magalia CA 95954 Bill cames Franks other books well fans WW warbirds Bob Holman PO Box 741 San Bernardino CA 92402 has couple beauts Theyre Bristol MlB /3-scale 1035-in wingspan Avro 504K SuperTigre S-2500 flies Bristol monoplane Bob also carries retract gears spinners WW II KMI IS THE LARGEST AND BEST EQUIPPED INDEPENDENT RC SERVICE AND REPAIR CENTER IN THE USA repair major brands new older models WE ARE FACTORY AUTHORIZED WARRANTY SERVICE FOR AIRTRONICS ACE AND HITEC stock genuine factory replacement parts EXCLUSIVE SERVICE AND SALES OF RCD-KMI 6 METER RECEIVERS 1 991 Gold Sticker narrowband frequency upgrades-station #21 stock crystals 1 03 different frequen cies SEND SAE FOR COMPLETE PRICE REPAIR AND PRODUCT INFORMATION CALL FOR RUSH SERVICE $ 9995 8 Ch 50 53 72 75 Mhz 2-wheel gear 1 ycle $1 7995 includes amplifier Kraft Midwest Inc IwI 115 E Main Northville MI 48167 313/348-0085 313/348-4175 1991 KMI MINI ULTRA AM RECEIVER KMI RETRACTS GATOR TRANSMHTER CASE feather lite GLASS CLOTH 7 oz/sq yd weight close weave makes glass cloth easy filling extremely light finished weight Big 3 sq yd package detailed inatrssctions$895 SOFT-N-SAFE MOUNTS *1ft new type engine soft mount using special ribbed Iso-damp grommeta Engine always safely retained Vesy effective vibration reduction dramatic decrease engine shake Available very ilght machined alum beam mount 60 2/strokes 120 4/strokes Also available alum plate radial mount 60 2/strokes *SOftN Safe 120 beam mount complete.$2995 *SoftNSafe 60 beam mount complete..$2495 5Soft-NSafe 60 radial mount complete..$lZ95 *Replacement grommets 120 mount. 4/495 *Replacement grommeta 60 mount 5 RADIAL ISO-MOUNTS 48 Conventional plate type mount using four Lord/type 60 Draro Iso-mounts Optimized lowest vibration transmission airframe reduced engine shake 60 Radial Iso-mount complete mount..$1495 Iso-mounts Pkg four 995 5/8 dia 1/2 long 8-32 female end g-32 1/2 male other end 60 Duro rubber 138 Model Aviation Last-minute reminder TMAA Rally Giants will held June 18-21 Kansas City Missouri Give Event Director Howard Wolf jangle 913 631-6346 CD Dick Taylor 816 333-9839 briefing details RC ElectricslKopski Continued page 51 outfit planes vety best Good lower cost alternatives sometimes desirable necessary Thanks everyone reactions comments Gear drives seem about popular Electrics direct drives month want offer some thoughts former particular what follows applies directly all-metal Astro gear sets Geared motors can obtained either two waysthey can purchased assembly can made up installing separately purchased gear set direct-drive motor factory-assembled motorldrives come gear set already lubricated other hand gears purchased separately dry must lubricated after installation motor before use Now want pause emphasize last advisory Simply put imperative lubricate new all-metal gear set before using fail gear damage will almost immediate may get away flight maybe two soon will noticeable noise becomes louder louder gear teeth grind other away new gear drive assembly becomes useless know stuff Well once upon time just finished new plane overeager get air just plain forgot about new dry gears off went field experience happened few years ago havent repeated since month several photos show some how-to Astro gear drives Ive using white lithium grease years have excellent results Im sure other lubes would fully satisfactory can attest firsthand Anyway grease available auto supply stores comes too large container modeling use its very nsive might find some use family wheels example Ive found works great squeaky car door hinges catches back gear drives preferred approach dip toothpick similar small stick grease dab small drop onto gears shown Spin drive band spread grease over teeth practice takes very little job Excess grease will simply thrown off run motor theres no point overdoing next thought Id like pass along After youve lubricated clean new gears want keep way Its important keep dirt grit out gearbox because such contamination can cause rapid gear wear too photo shows bottom nose-end view geared 25 cobalt-powered Seniorita after few flights off wet grassy field spots underside small mud splashes Notice gearbox opening coveredand splashes covering dirt would have gears cover place cover nothing piece plastic tape carefully fitted over gearbox opening almost no-cost addition can save big bucks laterjust keeping out dust dirt small creatures found almost runway Okayso much new gear assemblies about may have become dirty use lack care before knew about using tape covers Ive found what seems satisfactory way take care too First disassemble drive motor wipe off dirt surfaces both tissue Dont surprised find what looks like some brush dust front motorthis insidious stuff seems get everywhere Next cover motor front end bell holes cxAFTED CANOPIES QUALITY GRITY ICE 3950-A Valley Blvd WALNUT CA 9 1789 714 594-1349 5941471 CALL OR WRIFE FOR FREE BROCHURE *stiffdy high-density molded plastic Cushions impact resists weather Sirong double hinges durable latch Convoluted foam liner Great storing spare transmitters New low priee$1495 RJL HP Model Engines Sizes 15 61 Two & Four Cycle Airplane Hell Marine Car Vintage Forster Glow cC Ignition FACTORY PARTS & SmvlcE FoR HB ENGINES- RJL ENGINES- HP ENGINES KRAFT 61 Cox CONGUEsT 15 TAIPAN 40 HGK ENGINES FORSTER ENGINES MCCOY SERIES 21 IBLACK HEAD FINNED CASEI CAU OR WRITE fOR FREE INFORMATION RJL INDUSTRIES USA PO BOXS-SIERRAMADRE CA 91025 TELEPHONE 818 359-0016 Include $350/Item S&H*FL Residents Add 6% Tax GATOR R/C PRODUCTS INC 3713 Pompano Dr Pensacola FL 32514 Phone 904 494-0203 * Fax 904 494-0207
