Radio Control Sport Aerobatics Ron Van Putte HAVENT made conunents about AMA elec tions past election Don Lowe new AMA president made very pleased Ive known Don 20 years have shared hours hun modeler club member contestant government employee friend Don nicest persons know intelligent level-headed un biased Hes going best AMA presidents weve ever Im happy mood Id like comment enjoyable things month read RIC Report publication started eight months ago delighted sense humor exhibited editor Gordon Banks dont know feel read magazine reading R/C Report fun associate contributing editors have picked up Gordons sense humor say articles arent informative interest ing also full kind humor enjoy R/C Report mailed out hundreds AMA clubs month club contact AMA usually club president secretary prob ably getting free copy share club members Check out clubs copy youll probably want own subscription $9 per year $1650 two years PO Box 1706 Huntsville AL 35807 keep getting letters fliers degrees proficiency beginners Pattern competitors want know improve case beginners desire learn enough keep airplanes piece other end spectrum Pattern fliers looking perfection maneuvers try tell two ways improve always work critique practice very few athletes can improve beyond certain level coach selftaught athlete will never good could coach pointing out what should should Thats critique works athletics works Radio Control flying Im Expert class flier still ask help Usually ask John Fuqua critique maneuvers Johns Master/FAI class flier club go lot contests together So discuss ways can improve flying practice field way contests contests way back contests helps lot However help him too critiquing flying can fly airplane better can can still see some things hes doing wrong better can point need help qualified observer order improve flying Its often difficult ask some clubs better fliers assistance very few will refuse request long time ago wise man once suggested best ways make friend ask someone simple favor After getting advice its necessary practice make pay off repetition proper way maneuver will develop perspective view later maneuvers practice thats done fliers mind able become comfortable maneuver amazing fact lot practice gives maneuver appearance slowing down pilot can see what corrective control inputs necessary can put maneuver slowdown good key recognize youre trying decide whether enough practice has done course throughout maneuver practice good idea have continuing critique qualified observer preferably same provide feedback pilot knows really doing better maneuver develops technique Both critique practice necessary improvement go hand-inhand An important thing mention havent discussing Pattern flying exclusive ly Certainly method applicable Pattern flying equally applicable sport flying example sport flier wants leam land airplane better can use method just well Pattern flier wants better Four Point Roll Thanks John Fuqua District 5 RC Aerobatics Contest Board member have 2 shop neat L Van Pufles isnt usually good either its amazing what pressure taking picture will housekeeping urge Thats wild finish scheme R Pattern bird held Jim Marshall L Rick Michelena Mission TX 42 Model Aviation Mr Phoenix Don Lowe new AMA president plane Phoenix 9latest long-lived series / Atlanta winning everywhere Steve KesslerKingsvIlle TX shows off flew second place Advanced 86 Austin TX Pattern contest results Initial Vote 1988/1989 rules change proposals familiar Contest Board procedures pro posals pass Initial Vote considered further voting Rather discuss proposals Ill comment passed Initial Vote RC Aerobatics RCA 88-2 simplify classes combining Expert Master create new fixed pattern called Open passed along RCA 88-1 drop point accumulation Open class RCA 88-2 passed will have quite different impact parts country numerous areas Master class nearly extinct due competitors choosing fly FAI impact would minimal However far West California about Master class competitors FAI Expert class competitors will take beating Open class RCA 88-2 passes Final Vote RCA 88-14 emphasize flight track Aerobatic model over model attitude Obvi ously will have big effect windy condi tions good pilots have flying though rule already effect RCA 88-15 revise suggestions judges concerning two minor downgrades putting maneuver score down least eight severe defect three four minor defects should result seven six discussion h-point downgrades rule change could standardize some judging permit flexibil ity differentiate between pilots ofnearly equal ability RCA 88-16 clarify mandatory zero landing outside designated runway rule would remove some ambiguities about landingpoint award RCA 88-17 delete mandatory zero landing outside designated runway Either 88-16 88-17 will have fall Final Vote since approval would negate other RCA 88-18 delay mandatory advance ment Novice Sportsman end calendar year rather immediately rule would formally confirm rule interpretation previously announced RCA 88-19 change Expert class maneu vers Open class RCA 88-2 passed rule would increase overall difficulty flight add maneuver dont personally Continued page 142 0e ox 791257 Order Phone 512 525-0751 Mail Shipping US UPS Over $15000 FREE UPS Under $150- Add $450 UPS 2nd Day Air Up 7 lbs Add $995 Parcel Post $450 Canada Add 100/0 COD - Add $200 FUTABA RADIOS 7FGKH w/130 Servos 7FGK w14 Servos 6FGK w14 Servos 5FGK w14 Servos 6FG w14 Servos 4FG w14 Servos 4NL w13 Servos S-38 5-28 Servos Servos RIC ENGINES MUFFLERS INCLUDED Enya SS25BBTV.. New .. Enya SS4OB BTV w Enya SS45BBTV . New.. Fox Eagle 111 K&B 20 R/C K&B 40 R/C K&B 61 R/C 5995 7695 8895 7595 2895 4595 5495 25595 18695 16895 15995 14995 13595 10795 1995 1995 DREMEL TOOLS #3950 Variable Spd 4OIacc5a95 #2550 Two spd 30lacc5195 #2750 Single spd l5Iacc3995 #212 Deluxe Drill Press2995 COVERING MATERIALS & ACCESSORIES Monokote Opague675 Monokote Transparent675 Monokote Metallic740 GLUE ZAP 2 oc thick thin545 ZAP 1 oz thick thin295 ZAP oz thick thin202 ZAP 1 cc slow325 ZAP 1 cc tIesss Zip Kicker375 Jet Super Jet 2 07545 Jet Super Jet 1 07345 Slow Jet 1 07345 Jet Super Jet 9 Hot Stutf Super Reg 2 07450 Hot Stult Super Reg 0 ARE YOU TIRED OF POOR SERVICE CALL US BY 200 PM AND HAVE YOUR ORDER SHIPPED TODAY U pril 1987 43 Raq6 fhbhq San Antonio Texas 78279 BUILDERS SPECIAL DR EM EL TOOL COM BO #2850 Moto Tool w130 Acc #212 Deluxe Drill Press $7500 PRICES SUBJECT TO CHANGE- SOME QUANTITIES LIMITED two parameters will vary between types dis charger Thus discharge times have meaning particular unit also history discharge times pack provides infor mation its capacity Another thing remember about Ni-Cds so-called memory effect produced pack repeatedly discharged about same percentage capacity recharged theory cells get lazy wont produce past accustomed cutoff point cure discharge recharge several times row to break memory Dont worry about wearing out batteries doing discharge check month Unless lot flying Ni-Cds will quit due old age before wearing out Its experience Ni-Cds last about three five years Continuing previous example Say have receiver pack does 118 minutes discharger its new Over period three years times drop 94 minutes about 20% down could indicate cell weak course discharge time suddenly drops 50 minutes something like know something obviously wrong either case pack has go hospital surgery have open up packs case whatever necessary get voltmeter probe both ends cell Set voltmeter regular kind its lowest scale whatever reads zero about 15 volts Plug receiver pack ESVM put load transmit ters can turned ESVM used load purposes transmitter pack load applied test cell turnremembering observe polarity Usually youll find cell either stone dead reversed polarity much weaker rest cells make sure can recharge pack again individually test cells Usually suspect cell will still show bad shows good put pack discharger check cell 10 minutes suspect cell will probably run down quickly Now youve got choice either replace bad cell similar new discard whole pack pack isnt too old think remaining cells good can go ahead replace bad Most modem packs will have cells connected little straps welded cell can save strap carefully chiseling strap off old X Acto blade heftier variety new cell should prepared using rosin paste rosin-core solder put nice little blob solder end 50- 100-watt soldering iron about right trick get end cell hot quickly dont overheat ruin whole cell operation much simpler replacement cells have tabs al ready welded ends tabs heat up much faster After cell tinned its simple solder pack ifyou hold pack some sort vise fixture have hold soldering iron hand push strap down screw driver something other hand Now have reassemble pack charge put discharger see what get few charge/discharge cycles row good pack back within 5% 10% its original discharge time should okay Make note what youve done log sheet page pack may happen wind up replacing four receiver-pack cells within year case youll say should have thrown whole thing away begin Newsletter editors unite Barry Kurath news letter editor Portland Area Sailplane Society Februarys Club Month sent excel lent idea suggests Soaring club newsletter editors interested exchanging other clubs send name column name address get printed Sha zamyoure flooded newsletters Actually theres As editors know what crave good solid mate rial Nobody wants exchange learn next club meeting twenty-third need good newsletter exchange good news letter editors have developed inherited network other clubs good original article appears newsletter its astonishing fast travels around country Anyway stand ready print names addresses editors wish give go Since thought Barry gets go first Barry Kurath 3000 NE 29th Portland OR 97212 Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 43 care inclusion Reverse Knife Edge Flight lieu Three Horizontal Rolls like adding s Square Loop inclusion Triangular Rolling Loop RCA 88-20 change Advanced class maneuvers last proposed rule pass Initial Vote exception Knife Edge Flight like pattern dont like Knife Edge Flight same reason dont like 142Model Aviation $425 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS DISTRIBUTED BY SMIflflHI NED WE W*ZZD 7550 Sar GaS,rI Soad edeo CA 93422 456-1717 LEADER IN SMALL AIRFOIL TECHNOLOGY MASTER AIRSCREW new K Series family propellers has introduced three sizes 14x6 14x8 16x6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Calif 95401 Reverse Knife Edge Flight namely really strange Aerobatic maneuver requiring airplane large lateral area and/or high thrust Lets respond respective Contest Board members feel about proposals cleared Initial Vote hurdle Otherwise have ourselves blame votes go wrong way Nats schedule year will require lot us used late July/early August Nats starting date pay attention July 11 19 dates least two weeks earlier usual Schedule vacation early folks Another impact contests usually Nats tune-ups may too late year Unfortunately may cause some con tests cancelled due direct conflicts because dates proximity Nats know wont able go least contest always look forward attending July last note caption picture Paul Verger Lafayette LA appeared February issue said aileron servo Pauls airplane quit vertical-downward part Square Loop s Have ever seen maneuvers s would real challenge Can see corner end vertical-downward part Tough maneuver Sorry just typo should have s Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 landing-gear struts made home Winding springs mandrel really simple operation Anyone access lathe can pro duce springs quantity short time lathe spindle slowed means belt pulleys back gears give speed about revolution per second Slower better possible lathe isnt available mandrel can supported hardwood block clamped vise crank lever fastened end setscrew rotate mandrel manually Lever length about eight inches foot satisfactory winding springs light music wire up 062-in di ameter Drill cross hole through mandrel accept wire size chosen spring Bend music wire end 900 inserted cross hole Whether lathe-wound hand-cranked operation requires two persons example spring about 375-in outside diameter having 062-in music wire 25 turns will use almost three-foot length music wire Tension must applied free end wire force wire closely around mandrel spring wound personthe stronger heavier twostretches wire tightly other operates lathe On-Off switch turns crank have found reliable way grip wires free end plier vise-grip type heavy linemans plier likely slip due tension momentary relaxation operator happens free end wire will whip around arc can easily MORE POWEi1 WITH LESS NOISE four-cycle measuring up expectations read Make engine before Make 60 120 four-stroke less means 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off two-cycle DIESELIZE Send self-addressed stamped enve lope $100 infoation call 203-877-1670 between 730 pm and 930 pm EST DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 leader quiet combustion technology since 1976 April1987143 RC Scale/Wischers Continued page 45 responding advertisers mention read about ModelAviation
Edition: Model Aviation - 1987/04
Page Numbers: 42, 43, 142, 143
Radio Control Sport Aerobatics Ron Van Putte HAVENT made conunents about AMA elec tions past election Don Lowe new AMA president made very pleased Ive known Don 20 years have shared hours hun modeler club member contestant government employee friend Don nicest persons know intelligent level-headed un biased Hes going best AMA presidents weve ever Im happy mood Id like comment enjoyable things month read RIC Report publication started eight months ago delighted sense humor exhibited editor Gordon Banks dont know feel read magazine reading R/C Report fun associate contributing editors have picked up Gordons sense humor say articles arent informative interest ing also full kind humor enjoy R/C Report mailed out hundreds AMA clubs month club contact AMA usually club president secretary prob ably getting free copy share club members Check out clubs copy youll probably want own subscription $9 per year $1650 two years PO Box 1706 Huntsville AL 35807 keep getting letters fliers degrees proficiency beginners Pattern competitors want know improve case beginners desire learn enough keep airplanes piece other end spectrum Pattern fliers looking perfection maneuvers try tell two ways improve always work critique practice very few athletes can improve beyond certain level coach selftaught athlete will never good could coach pointing out what should should Thats critique works athletics works Radio Control flying Im Expert class flier still ask help Usually ask John Fuqua critique maneuvers Johns Master/FAI class flier club go lot contests together So discuss ways can improve flying practice field way contests contests way back contests helps lot However help him too critiquing flying can fly airplane better can can still see some things hes doing wrong better can point need help qualified observer order improve flying Its often difficult ask some clubs better fliers assistance very few will refuse request long time ago wise man once suggested best ways make friend ask someone simple favor After getting advice its necessary practice make pay off repetition proper way maneuver will develop perspective view later maneuvers practice thats done fliers mind able become comfortable maneuver amazing fact lot practice gives maneuver appearance slowing down pilot can see what corrective control inputs necessary can put maneuver slowdown good key recognize youre trying decide whether enough practice has done course throughout maneuver practice good idea have continuing critique qualified observer preferably same provide feedback pilot knows really doing better maneuver develops technique Both critique practice necessary improvement go hand-inhand An important thing mention havent discussing Pattern flying exclusive ly Certainly method applicable Pattern flying equally applicable sport flying example sport flier wants leam land airplane better can use method just well Pattern flier wants better Four Point Roll Thanks John Fuqua District 5 RC Aerobatics Contest Board member have 2 shop neat L Van Pufles isnt usually good either its amazing what pressure taking picture will housekeeping urge Thats wild finish scheme R Pattern bird held Jim Marshall L Rick Michelena Mission TX 42 Model Aviation Mr Phoenix Don Lowe new AMA president plane Phoenix 9latest long-lived series / Atlanta winning everywhere Steve KesslerKingsvIlle TX shows off flew second place Advanced 86 Austin TX Pattern contest results Initial Vote 1988/1989 rules change proposals familiar Contest Board procedures pro posals pass Initial Vote considered further voting Rather discuss proposals Ill comment passed Initial Vote RC Aerobatics RCA 88-2 simplify classes combining Expert Master create new fixed pattern called Open passed along RCA 88-1 drop point accumulation Open class RCA 88-2 passed will have quite different impact parts country numerous areas Master class nearly extinct due competitors choosing fly FAI impact would minimal However far West California about Master class competitors FAI Expert class competitors will take beating Open class RCA 88-2 passes Final Vote RCA 88-14 emphasize flight track Aerobatic model over model attitude Obvi ously will have big effect windy condi tions good pilots have flying though rule already effect RCA 88-15 revise suggestions judges concerning two minor downgrades putting maneuver score down least eight severe defect three four minor defects should result seven six discussion h-point downgrades rule change could standardize some judging permit flexibil ity differentiate between pilots ofnearly equal ability RCA 88-16 clarify mandatory zero landing outside designated runway rule would remove some ambiguities about landingpoint award RCA 88-17 delete mandatory zero landing outside designated runway Either 88-16 88-17 will have fall Final Vote since approval would negate other RCA 88-18 delay mandatory advance ment Novice Sportsman end calendar year rather immediately rule would formally confirm rule interpretation previously announced RCA 88-19 change Expert class maneu vers Open class RCA 88-2 passed rule would increase overall difficulty flight add maneuver dont personally Continued page 142 0e ox 791257 Order Phone 512 525-0751 Mail Shipping US UPS Over $15000 FREE UPS Under $150- Add $450 UPS 2nd Day Air Up 7 lbs Add $995 Parcel Post $450 Canada Add 100/0 COD - Add $200 FUTABA RADIOS 7FGKH w/130 Servos 7FGK w14 Servos 6FGK w14 Servos 5FGK w14 Servos 6FG w14 Servos 4FG w14 Servos 4NL w13 Servos S-38 5-28 Servos Servos RIC ENGINES MUFFLERS INCLUDED Enya SS25BBTV.. New .. Enya SS4OB BTV w Enya SS45BBTV . New.. Fox Eagle 111 K&B 20 R/C K&B 40 R/C K&B 61 R/C 5995 7695 8895 7595 2895 4595 5495 25595 18695 16895 15995 14995 13595 10795 1995 1995 DREMEL TOOLS #3950 Variable Spd 4OIacc5a95 #2550 Two spd 30lacc5195 #2750 Single spd l5Iacc3995 #212 Deluxe Drill Press2995 COVERING MATERIALS & ACCESSORIES Monokote Opague675 Monokote Transparent675 Monokote Metallic740 GLUE ZAP 2 oc thick thin545 ZAP 1 oz thick thin295 ZAP oz thick thin202 ZAP 1 cc slow325 ZAP 1 cc tIesss Zip Kicker375 Jet Super Jet 2 07545 Jet Super Jet 1 07345 Slow Jet 1 07345 Jet Super Jet 9 Hot Stutf Super Reg 2 07450 Hot Stult Super Reg 0 ARE YOU TIRED OF POOR SERVICE CALL US BY 200 PM AND HAVE YOUR ORDER SHIPPED TODAY U pril 1987 43 Raq6 fhbhq San Antonio Texas 78279 BUILDERS SPECIAL DR EM EL TOOL COM BO #2850 Moto Tool w130 Acc #212 Deluxe Drill Press $7500 PRICES SUBJECT TO CHANGE- SOME QUANTITIES LIMITED two parameters will vary between types dis charger Thus discharge times have meaning particular unit also history discharge times pack provides infor mation its capacity Another thing remember about Ni-Cds so-called memory effect produced pack repeatedly discharged about same percentage capacity recharged theory cells get lazy wont produce past accustomed cutoff point cure discharge recharge several times row to break memory Dont worry about wearing out batteries doing discharge check month Unless lot flying Ni-Cds will quit due old age before wearing out Its experience Ni-Cds last about three five years Continuing previous example Say have receiver pack does 118 minutes discharger its new Over period three years times drop 94 minutes about 20% down could indicate cell weak course discharge time suddenly drops 50 minutes something like know something obviously wrong either case pack has go hospital surgery have open up packs case whatever necessary get voltmeter probe both ends cell Set voltmeter regular kind its lowest scale whatever reads zero about 15 volts Plug receiver pack ESVM put load transmit ters can turned ESVM used load purposes transmitter pack load applied test cell turnremembering observe polarity Usually youll find cell either stone dead reversed polarity much weaker rest cells make sure can recharge pack again individually test cells Usually suspect cell will still show bad shows good put pack discharger check cell 10 minutes suspect cell will probably run down quickly Now youve got choice either replace bad cell similar new discard whole pack pack isnt too old think remaining cells good can go ahead replace bad Most modem packs will have cells connected little straps welded cell can save strap carefully chiseling strap off old X Acto blade heftier variety new cell should prepared using rosin paste rosin-core solder put nice little blob solder end 50- 100-watt soldering iron about right trick get end cell hot quickly dont overheat ruin whole cell operation much simpler replacement cells have tabs al ready welded ends tabs heat up much faster After cell tinned its simple solder pack ifyou hold pack some sort vise fixture have hold soldering iron hand push strap down screw driver something other hand Now have reassemble pack charge put discharger see what get few charge/discharge cycles row good pack back within 5% 10% its original discharge time should okay Make note what youve done log sheet page pack may happen wind up replacing four receiver-pack cells within year case youll say should have thrown whole thing away begin Newsletter editors unite Barry Kurath news letter editor Portland Area Sailplane Society Februarys Club Month sent excel lent idea suggests Soaring club newsletter editors interested exchanging other clubs send name column name address get printed Sha zamyoure flooded newsletters Actually theres As editors know what crave good solid mate rial Nobody wants exchange learn next club meeting twenty-third need good newsletter exchange good news letter editors have developed inherited network other clubs good original article appears newsletter its astonishing fast travels around country Anyway stand ready print names addresses editors wish give go Since thought Barry gets go first Barry Kurath 3000 NE 29th Portland OR 97212 Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 43 care inclusion Reverse Knife Edge Flight lieu Three Horizontal Rolls like adding s Square Loop inclusion Triangular Rolling Loop RCA 88-20 change Advanced class maneuvers last proposed rule pass Initial Vote exception Knife Edge Flight like pattern dont like Knife Edge Flight same reason dont like 142Model Aviation $425 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS DISTRIBUTED BY SMIflflHI NED WE W*ZZD 7550 Sar GaS,rI Soad edeo CA 93422 456-1717 LEADER IN SMALL AIRFOIL TECHNOLOGY MASTER AIRSCREW new K Series family propellers has introduced three sizes 14x6 14x8 16x6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Calif 95401 Reverse Knife Edge Flight namely really strange Aerobatic maneuver requiring airplane large lateral area and/or high thrust Lets respond respective Contest Board members feel about proposals cleared Initial Vote hurdle Otherwise have ourselves blame votes go wrong way Nats schedule year will require lot us used late July/early August Nats starting date pay attention July 11 19 dates least two weeks earlier usual Schedule vacation early folks Another impact contests usually Nats tune-ups may too late year Unfortunately may cause some con tests cancelled due direct conflicts because dates proximity Nats know wont able go least contest always look forward attending July last note caption picture Paul Verger Lafayette LA appeared February issue said aileron servo Pauls airplane quit vertical-downward part Square Loop s Have ever seen maneuvers s would real challenge Can see corner end vertical-downward part Tough maneuver Sorry just typo should have s Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 landing-gear struts made home Winding springs mandrel really simple operation Anyone access lathe can pro duce springs quantity short time lathe spindle slowed means belt pulleys back gears give speed about revolution per second Slower better possible lathe isnt available mandrel can supported hardwood block clamped vise crank lever fastened end setscrew rotate mandrel manually Lever length about eight inches foot satisfactory winding springs light music wire up 062-in di ameter Drill cross hole through mandrel accept wire size chosen spring Bend music wire end 900 inserted cross hole Whether lathe-wound hand-cranked operation requires two persons example spring about 375-in outside diameter having 062-in music wire 25 turns will use almost three-foot length music wire Tension must applied free end wire force wire closely around mandrel spring wound personthe stronger heavier twostretches wire tightly other operates lathe On-Off switch turns crank have found reliable way grip wires free end plier vise-grip type heavy linemans plier likely slip due tension momentary relaxation operator happens free end wire will whip around arc can easily MORE POWEi1 WITH LESS NOISE four-cycle measuring up expectations read Make engine before Make 60 120 four-stroke less means 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off two-cycle DIESELIZE Send self-addressed stamped enve lope $100 infoation call 203-877-1670 between 730 pm and 930 pm EST DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 leader quiet combustion technology since 1976 April1987143 RC Scale/Wischers Continued page 45 responding advertisers mention read about ModelAviation
Edition: Model Aviation - 1987/04
Page Numbers: 42, 43, 142, 143
Radio Control Sport Aerobatics Ron Van Putte HAVENT made conunents about AMA elec tions past election Don Lowe new AMA president made very pleased Ive known Don 20 years have shared hours hun modeler club member contestant government employee friend Don nicest persons know intelligent level-headed un biased Hes going best AMA presidents weve ever Im happy mood Id like comment enjoyable things month read RIC Report publication started eight months ago delighted sense humor exhibited editor Gordon Banks dont know feel read magazine reading R/C Report fun associate contributing editors have picked up Gordons sense humor say articles arent informative interest ing also full kind humor enjoy R/C Report mailed out hundreds AMA clubs month club contact AMA usually club president secretary prob ably getting free copy share club members Check out clubs copy youll probably want own subscription $9 per year $1650 two years PO Box 1706 Huntsville AL 35807 keep getting letters fliers degrees proficiency beginners Pattern competitors want know improve case beginners desire learn enough keep airplanes piece other end spectrum Pattern fliers looking perfection maneuvers try tell two ways improve always work critique practice very few athletes can improve beyond certain level coach selftaught athlete will never good could coach pointing out what should should Thats critique works athletics works Radio Control flying Im Expert class flier still ask help Usually ask John Fuqua critique maneuvers Johns Master/FAI class flier club go lot contests together So discuss ways can improve flying practice field way contests contests way back contests helps lot However help him too critiquing flying can fly airplane better can can still see some things hes doing wrong better can point need help qualified observer order improve flying Its often difficult ask some clubs better fliers assistance very few will refuse request long time ago wise man once suggested best ways make friend ask someone simple favor After getting advice its necessary practice make pay off repetition proper way maneuver will develop perspective view later maneuvers practice thats done fliers mind able become comfortable maneuver amazing fact lot practice gives maneuver appearance slowing down pilot can see what corrective control inputs necessary can put maneuver slowdown good key recognize youre trying decide whether enough practice has done course throughout maneuver practice good idea have continuing critique qualified observer preferably same provide feedback pilot knows really doing better maneuver develops technique Both critique practice necessary improvement go hand-inhand An important thing mention havent discussing Pattern flying exclusive ly Certainly method applicable Pattern flying equally applicable sport flying example sport flier wants leam land airplane better can use method just well Pattern flier wants better Four Point Roll Thanks John Fuqua District 5 RC Aerobatics Contest Board member have 2 shop neat L Van Pufles isnt usually good either its amazing what pressure taking picture will housekeeping urge Thats wild finish scheme R Pattern bird held Jim Marshall L Rick Michelena Mission TX 42 Model Aviation Mr Phoenix Don Lowe new AMA president plane Phoenix 9latest long-lived series / Atlanta winning everywhere Steve KesslerKingsvIlle TX shows off flew second place Advanced 86 Austin TX Pattern contest results Initial Vote 1988/1989 rules change proposals familiar Contest Board procedures pro posals pass Initial Vote considered further voting Rather discuss proposals Ill comment passed Initial Vote RC Aerobatics RCA 88-2 simplify classes combining Expert Master create new fixed pattern called Open passed along RCA 88-1 drop point accumulation Open class RCA 88-2 passed will have quite different impact parts country numerous areas Master class nearly extinct due competitors choosing fly FAI impact would minimal However far West California about Master class competitors FAI Expert class competitors will take beating Open class RCA 88-2 passes Final Vote RCA 88-14 emphasize flight track Aerobatic model over model attitude Obvi ously will have big effect windy condi tions good pilots have flying though rule already effect RCA 88-15 revise suggestions judges concerning two minor downgrades putting maneuver score down least eight severe defect three four minor defects should result seven six discussion h-point downgrades rule change could standardize some judging permit flexibil ity differentiate between pilots ofnearly equal ability RCA 88-16 clarify mandatory zero landing outside designated runway rule would remove some ambiguities about landingpoint award RCA 88-17 delete mandatory zero landing outside designated runway Either 88-16 88-17 will have fall Final Vote since approval would negate other RCA 88-18 delay mandatory advance ment Novice Sportsman end calendar year rather immediately rule would formally confirm rule interpretation previously announced RCA 88-19 change Expert class maneu vers Open class RCA 88-2 passed rule would increase overall difficulty flight add maneuver dont personally Continued page 142 0e ox 791257 Order Phone 512 525-0751 Mail Shipping US UPS Over $15000 FREE UPS Under $150- Add $450 UPS 2nd Day Air Up 7 lbs Add $995 Parcel Post $450 Canada Add 100/0 COD - Add $200 FUTABA RADIOS 7FGKH w/130 Servos 7FGK w14 Servos 6FGK w14 Servos 5FGK w14 Servos 6FG w14 Servos 4FG w14 Servos 4NL w13 Servos S-38 5-28 Servos Servos RIC ENGINES MUFFLERS INCLUDED Enya SS25BBTV.. New .. Enya SS4OB BTV w Enya SS45BBTV . New.. Fox Eagle 111 K&B 20 R/C K&B 40 R/C K&B 61 R/C 5995 7695 8895 7595 2895 4595 5495 25595 18695 16895 15995 14995 13595 10795 1995 1995 DREMEL TOOLS #3950 Variable Spd 4OIacc5a95 #2550 Two spd 30lacc5195 #2750 Single spd l5Iacc3995 #212 Deluxe Drill Press2995 COVERING MATERIALS & ACCESSORIES Monokote Opague675 Monokote Transparent675 Monokote Metallic740 GLUE ZAP 2 oc thick thin545 ZAP 1 oz thick thin295 ZAP oz thick thin202 ZAP 1 cc slow325 ZAP 1 cc tIesss Zip Kicker375 Jet Super Jet 2 07545 Jet Super Jet 1 07345 Slow Jet 1 07345 Jet Super Jet 9 Hot Stutf Super Reg 2 07450 Hot Stult Super Reg 0 ARE YOU TIRED OF POOR SERVICE CALL US BY 200 PM AND HAVE YOUR ORDER SHIPPED TODAY U pril 1987 43 Raq6 fhbhq San Antonio Texas 78279 BUILDERS SPECIAL DR EM EL TOOL COM BO #2850 Moto Tool w130 Acc #212 Deluxe Drill Press $7500 PRICES SUBJECT TO CHANGE- SOME QUANTITIES LIMITED two parameters will vary between types dis charger Thus discharge times have meaning particular unit also history discharge times pack provides infor mation its capacity Another thing remember about Ni-Cds so-called memory effect produced pack repeatedly discharged about same percentage capacity recharged theory cells get lazy wont produce past accustomed cutoff point cure discharge recharge several times row to break memory Dont worry about wearing out batteries doing discharge check month Unless lot flying Ni-Cds will quit due old age before wearing out Its experience Ni-Cds last about three five years Continuing previous example Say have receiver pack does 118 minutes discharger its new Over period three years times drop 94 minutes about 20% down could indicate cell weak course discharge time suddenly drops 50 minutes something like know something obviously wrong either case pack has go hospital surgery have open up packs case whatever necessary get voltmeter probe both ends cell Set voltmeter regular kind its lowest scale whatever reads zero about 15 volts Plug receiver pack ESVM put load transmit ters can turned ESVM used load purposes transmitter pack load applied test cell turnremembering observe polarity Usually youll find cell either stone dead reversed polarity much weaker rest cells make sure can recharge pack again individually test cells Usually suspect cell will still show bad shows good put pack discharger check cell 10 minutes suspect cell will probably run down quickly Now youve got choice either replace bad cell similar new discard whole pack pack isnt too old think remaining cells good can go ahead replace bad Most modem packs will have cells connected little straps welded cell can save strap carefully chiseling strap off old X Acto blade heftier variety new cell should prepared using rosin paste rosin-core solder put nice little blob solder end 50- 100-watt soldering iron about right trick get end cell hot quickly dont overheat ruin whole cell operation much simpler replacement cells have tabs al ready welded ends tabs heat up much faster After cell tinned its simple solder pack ifyou hold pack some sort vise fixture have hold soldering iron hand push strap down screw driver something other hand Now have reassemble pack charge put discharger see what get few charge/discharge cycles row good pack back within 5% 10% its original discharge time should okay Make note what youve done log sheet page pack may happen wind up replacing four receiver-pack cells within year case youll say should have thrown whole thing away begin Newsletter editors unite Barry Kurath news letter editor Portland Area Sailplane Society Februarys Club Month sent excel lent idea suggests Soaring club newsletter editors interested exchanging other clubs send name column name address get printed Sha zamyoure flooded newsletters Actually theres As editors know what crave good solid mate rial Nobody wants exchange learn next club meeting twenty-third need good newsletter exchange good news letter editors have developed inherited network other clubs good original article appears newsletter its astonishing fast travels around country Anyway stand ready print names addresses editors wish give go Since thought Barry gets go first Barry Kurath 3000 NE 29th Portland OR 97212 Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 43 care inclusion Reverse Knife Edge Flight lieu Three Horizontal Rolls like adding s Square Loop inclusion Triangular Rolling Loop RCA 88-20 change Advanced class maneuvers last proposed rule pass Initial Vote exception Knife Edge Flight like pattern dont like Knife Edge Flight same reason dont like 142Model Aviation $425 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS DISTRIBUTED BY SMIflflHI NED WE W*ZZD 7550 Sar GaS,rI Soad edeo CA 93422 456-1717 LEADER IN SMALL AIRFOIL TECHNOLOGY MASTER AIRSCREW new K Series family propellers has introduced three sizes 14x6 14x8 16x6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Calif 95401 Reverse Knife Edge Flight namely really strange Aerobatic maneuver requiring airplane large lateral area and/or high thrust Lets respond respective Contest Board members feel about proposals cleared Initial Vote hurdle Otherwise have ourselves blame votes go wrong way Nats schedule year will require lot us used late July/early August Nats starting date pay attention July 11 19 dates least two weeks earlier usual Schedule vacation early folks Another impact contests usually Nats tune-ups may too late year Unfortunately may cause some con tests cancelled due direct conflicts because dates proximity Nats know wont able go least contest always look forward attending July last note caption picture Paul Verger Lafayette LA appeared February issue said aileron servo Pauls airplane quit vertical-downward part Square Loop s Have ever seen maneuvers s would real challenge Can see corner end vertical-downward part Tough maneuver Sorry just typo should have s Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 landing-gear struts made home Winding springs mandrel really simple operation Anyone access lathe can pro duce springs quantity short time lathe spindle slowed means belt pulleys back gears give speed about revolution per second Slower better possible lathe isnt available mandrel can supported hardwood block clamped vise crank lever fastened end setscrew rotate mandrel manually Lever length about eight inches foot satisfactory winding springs light music wire up 062-in di ameter Drill cross hole through mandrel accept wire size chosen spring Bend music wire end 900 inserted cross hole Whether lathe-wound hand-cranked operation requires two persons example spring about 375-in outside diameter having 062-in music wire 25 turns will use almost three-foot length music wire Tension must applied free end wire force wire closely around mandrel spring wound personthe stronger heavier twostretches wire tightly other operates lathe On-Off switch turns crank have found reliable way grip wires free end plier vise-grip type heavy linemans plier likely slip due tension momentary relaxation operator happens free end wire will whip around arc can easily MORE POWEi1 WITH LESS NOISE four-cycle measuring up expectations read Make engine before Make 60 120 four-stroke less means 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off two-cycle DIESELIZE Send self-addressed stamped enve lope $100 infoation call 203-877-1670 between 730 pm and 930 pm EST DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 leader quiet combustion technology since 1976 April1987143 RC Scale/Wischers Continued page 45 responding advertisers mention read about ModelAviation
Edition: Model Aviation - 1987/04
Page Numbers: 42, 43, 142, 143
Radio Control Sport Aerobatics Ron Van Putte HAVENT made conunents about AMA elec tions past election Don Lowe new AMA president made very pleased Ive known Don 20 years have shared hours hun modeler club member contestant government employee friend Don nicest persons know intelligent level-headed un biased Hes going best AMA presidents weve ever Im happy mood Id like comment enjoyable things month read RIC Report publication started eight months ago delighted sense humor exhibited editor Gordon Banks dont know feel read magazine reading R/C Report fun associate contributing editors have picked up Gordons sense humor say articles arent informative interest ing also full kind humor enjoy R/C Report mailed out hundreds AMA clubs month club contact AMA usually club president secretary prob ably getting free copy share club members Check out clubs copy youll probably want own subscription $9 per year $1650 two years PO Box 1706 Huntsville AL 35807 keep getting letters fliers degrees proficiency beginners Pattern competitors want know improve case beginners desire learn enough keep airplanes piece other end spectrum Pattern fliers looking perfection maneuvers try tell two ways improve always work critique practice very few athletes can improve beyond certain level coach selftaught athlete will never good could coach pointing out what should should Thats critique works athletics works Radio Control flying Im Expert class flier still ask help Usually ask John Fuqua critique maneuvers Johns Master/FAI class flier club go lot contests together So discuss ways can improve flying practice field way contests contests way back contests helps lot However help him too critiquing flying can fly airplane better can can still see some things hes doing wrong better can point need help qualified observer order improve flying Its often difficult ask some clubs better fliers assistance very few will refuse request long time ago wise man once suggested best ways make friend ask someone simple favor After getting advice its necessary practice make pay off repetition proper way maneuver will develop perspective view later maneuvers practice thats done fliers mind able become comfortable maneuver amazing fact lot practice gives maneuver appearance slowing down pilot can see what corrective control inputs necessary can put maneuver slowdown good key recognize youre trying decide whether enough practice has done course throughout maneuver practice good idea have continuing critique qualified observer preferably same provide feedback pilot knows really doing better maneuver develops technique Both critique practice necessary improvement go hand-inhand An important thing mention havent discussing Pattern flying exclusive ly Certainly method applicable Pattern flying equally applicable sport flying example sport flier wants leam land airplane better can use method just well Pattern flier wants better Four Point Roll Thanks John Fuqua District 5 RC Aerobatics Contest Board member have 2 shop neat L Van Pufles isnt usually good either its amazing what pressure taking picture will housekeeping urge Thats wild finish scheme R Pattern bird held Jim Marshall L Rick Michelena Mission TX 42 Model Aviation Mr Phoenix Don Lowe new AMA president plane Phoenix 9latest long-lived series / Atlanta winning everywhere Steve KesslerKingsvIlle TX shows off flew second place Advanced 86 Austin TX Pattern contest results Initial Vote 1988/1989 rules change proposals familiar Contest Board procedures pro posals pass Initial Vote considered further voting Rather discuss proposals Ill comment passed Initial Vote RC Aerobatics RCA 88-2 simplify classes combining Expert Master create new fixed pattern called Open passed along RCA 88-1 drop point accumulation Open class RCA 88-2 passed will have quite different impact parts country numerous areas Master class nearly extinct due competitors choosing fly FAI impact would minimal However far West California about Master class competitors FAI Expert class competitors will take beating Open class RCA 88-2 passes Final Vote RCA 88-14 emphasize flight track Aerobatic model over model attitude Obvi ously will have big effect windy condi tions good pilots have flying though rule already effect RCA 88-15 revise suggestions judges concerning two minor downgrades putting maneuver score down least eight severe defect three four minor defects should result seven six discussion h-point downgrades rule change could standardize some judging permit flexibil ity differentiate between pilots ofnearly equal ability RCA 88-16 clarify mandatory zero landing outside designated runway rule would remove some ambiguities about landingpoint award RCA 88-17 delete mandatory zero landing outside designated runway Either 88-16 88-17 will have fall Final Vote since approval would negate other RCA 88-18 delay mandatory advance ment Novice Sportsman end calendar year rather immediately rule would formally confirm rule interpretation previously announced RCA 88-19 change Expert class maneu vers Open class RCA 88-2 passed rule would increase overall difficulty flight add maneuver dont personally Continued page 142 0e ox 791257 Order Phone 512 525-0751 Mail Shipping US UPS Over $15000 FREE UPS Under $150- Add $450 UPS 2nd Day Air Up 7 lbs Add $995 Parcel Post $450 Canada Add 100/0 COD - Add $200 FUTABA RADIOS 7FGKH w/130 Servos 7FGK w14 Servos 6FGK w14 Servos 5FGK w14 Servos 6FG w14 Servos 4FG w14 Servos 4NL w13 Servos S-38 5-28 Servos Servos RIC ENGINES MUFFLERS INCLUDED Enya SS25BBTV.. New .. Enya SS4OB BTV w Enya SS45BBTV . New.. Fox Eagle 111 K&B 20 R/C K&B 40 R/C K&B 61 R/C 5995 7695 8895 7595 2895 4595 5495 25595 18695 16895 15995 14995 13595 10795 1995 1995 DREMEL TOOLS #3950 Variable Spd 4OIacc5a95 #2550 Two spd 30lacc5195 #2750 Single spd l5Iacc3995 #212 Deluxe Drill Press2995 COVERING MATERIALS & ACCESSORIES Monokote Opague675 Monokote Transparent675 Monokote Metallic740 GLUE ZAP 2 oc thick thin545 ZAP 1 oz thick thin295 ZAP oz thick thin202 ZAP 1 cc slow325 ZAP 1 cc tIesss Zip Kicker375 Jet Super Jet 2 07545 Jet Super Jet 1 07345 Slow Jet 1 07345 Jet Super Jet 9 Hot Stutf Super Reg 2 07450 Hot Stult Super Reg 0 ARE YOU TIRED OF POOR SERVICE CALL US BY 200 PM AND HAVE YOUR ORDER SHIPPED TODAY U pril 1987 43 Raq6 fhbhq San Antonio Texas 78279 BUILDERS SPECIAL DR EM EL TOOL COM BO #2850 Moto Tool w130 Acc #212 Deluxe Drill Press $7500 PRICES SUBJECT TO CHANGE- SOME QUANTITIES LIMITED two parameters will vary between types dis charger Thus discharge times have meaning particular unit also history discharge times pack provides infor mation its capacity Another thing remember about Ni-Cds so-called memory effect produced pack repeatedly discharged about same percentage capacity recharged theory cells get lazy wont produce past accustomed cutoff point cure discharge recharge several times row to break memory Dont worry about wearing out batteries doing discharge check month Unless lot flying Ni-Cds will quit due old age before wearing out Its experience Ni-Cds last about three five years Continuing previous example Say have receiver pack does 118 minutes discharger its new Over period three years times drop 94 minutes about 20% down could indicate cell weak course discharge time suddenly drops 50 minutes something like know something obviously wrong either case pack has go hospital surgery have open up packs case whatever necessary get voltmeter probe both ends cell Set voltmeter regular kind its lowest scale whatever reads zero about 15 volts Plug receiver pack ESVM put load transmit ters can turned ESVM used load purposes transmitter pack load applied test cell turnremembering observe polarity Usually youll find cell either stone dead reversed polarity much weaker rest cells make sure can recharge pack again individually test cells Usually suspect cell will still show bad shows good put pack discharger check cell 10 minutes suspect cell will probably run down quickly Now youve got choice either replace bad cell similar new discard whole pack pack isnt too old think remaining cells good can go ahead replace bad Most modem packs will have cells connected little straps welded cell can save strap carefully chiseling strap off old X Acto blade heftier variety new cell should prepared using rosin paste rosin-core solder put nice little blob solder end 50- 100-watt soldering iron about right trick get end cell hot quickly dont overheat ruin whole cell operation much simpler replacement cells have tabs al ready welded ends tabs heat up much faster After cell tinned its simple solder pack ifyou hold pack some sort vise fixture have hold soldering iron hand push strap down screw driver something other hand Now have reassemble pack charge put discharger see what get few charge/discharge cycles row good pack back within 5% 10% its original discharge time should okay Make note what youve done log sheet page pack may happen wind up replacing four receiver-pack cells within year case youll say should have thrown whole thing away begin Newsletter editors unite Barry Kurath news letter editor Portland Area Sailplane Society Februarys Club Month sent excel lent idea suggests Soaring club newsletter editors interested exchanging other clubs send name column name address get printed Sha zamyoure flooded newsletters Actually theres As editors know what crave good solid mate rial Nobody wants exchange learn next club meeting twenty-third need good newsletter exchange good news letter editors have developed inherited network other clubs good original article appears newsletter its astonishing fast travels around country Anyway stand ready print names addresses editors wish give go Since thought Barry gets go first Barry Kurath 3000 NE 29th Portland OR 97212 Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 43 care inclusion Reverse Knife Edge Flight lieu Three Horizontal Rolls like adding s Square Loop inclusion Triangular Rolling Loop RCA 88-20 change Advanced class maneuvers last proposed rule pass Initial Vote exception Knife Edge Flight like pattern dont like Knife Edge Flight same reason dont like 142Model Aviation $425 AVAILABLE AT AMERICAS FINEST HOBBY SHOPS DISTRIBUTED BY SMIflflHI NED WE W*ZZD 7550 Sar GaS,rI Soad edeo CA 93422 456-1717 LEADER IN SMALL AIRFOIL TECHNOLOGY MASTER AIRSCREW new K Series family propellers has introduced three sizes 14x6 14x8 16x6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Calif 95401 Reverse Knife Edge Flight namely really strange Aerobatic maneuver requiring airplane large lateral area and/or high thrust Lets respond respective Contest Board members feel about proposals cleared Initial Vote hurdle Otherwise have ourselves blame votes go wrong way Nats schedule year will require lot us used late July/early August Nats starting date pay attention July 11 19 dates least two weeks earlier usual Schedule vacation early folks Another impact contests usually Nats tune-ups may too late year Unfortunately may cause some con tests cancelled due direct conflicts because dates proximity Nats know wont able go least contest always look forward attending July last note caption picture Paul Verger Lafayette LA appeared February issue said aileron servo Pauls airplane quit vertical-downward part Square Loop s Have ever seen maneuvers s would real challenge Can see corner end vertical-downward part Tough maneuver Sorry just typo should have s Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 landing-gear struts made home Winding springs mandrel really simple operation Anyone access lathe can pro duce springs quantity short time lathe spindle slowed means belt pulleys back gears give speed about revolution per second Slower better possible lathe isnt available mandrel can supported hardwood block clamped vise crank lever fastened end setscrew rotate mandrel manually Lever length about eight inches foot satisfactory winding springs light music wire up 062-in di ameter Drill cross hole through mandrel accept wire size chosen spring Bend music wire end 900 inserted cross hole Whether lathe-wound hand-cranked operation requires two persons example spring about 375-in outside diameter having 062-in music wire 25 turns will use almost three-foot length music wire Tension must applied free end wire force wire closely around mandrel spring wound personthe stronger heavier twostretches wire tightly other operates lathe On-Off switch turns crank have found reliable way grip wires free end plier vise-grip type heavy linemans plier likely slip due tension momentary relaxation operator happens free end wire will whip around arc can easily MORE POWEi1 WITH LESS NOISE four-cycle measuring up expectations read Make engine before Make 60 120 four-stroke less means 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off two-cycle DIESELIZE Send self-addressed stamped enve lope $100 infoation call 203-877-1670 between 730 pm and 930 pm EST DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 leader quiet combustion technology since 1976 April1987143 RC Scale/Wischers Continued page 45 responding advertisers mention read about ModelAviation