FREE FLIGHT OLDTIMERS appreciate letters contain ignition engine questions column will answer frequently asked First however will briefly discuss photos make couple product announcements photo Stinson 0-49 rubber model towing Schweizer TG-2 troop glider about 52 years old Earl Stahl designed both models took photo Stinson published July 1941 MAN Schweizer published December 1942 MAN love old photoslook attic send talked about John Ponds catalogs recent column neglected give other reason needed library source plans given such kit manufacturers name magazine month year great help ordering reprint original article Just now referred catalog get publication dates Stahls models VECO line models again being kitted Aero Engineering great classic Control Line models like Chief Warrior free flight models too notably Dakota Bipejust what need small-field flying address 1301-1311 Tuscaloosa Ave Birmingham AL 35211 Tel 205 785-9690 new address Campbells Custom Kits 4402 Weddel Dearborn Heights MI 48125 Tel 313 562-0272 moved June Lee Eve will unpacked time read About drawing actively flying AMA OldTimer rubber models never understood calculate hinge angles perfect fold never asked fear someone would tell turns out simple now wish someone told did okay ignorance mostly making hinge angles square Sears drill press would make models flew right get high enough no can see have perfect fold perfect fold looks nicer small drag reduction impresses people secret simple find angle blade 70%-of-radius point divide angle two angle forward out twist hinge line angle forward out angle must equal onehalf blade angle 70% PID ratios 10 12 14 angles will 120 140 160 Next time will try help set angles up meanwhile might look up Jim OReillys Tubestake OMT article March 1987 Model Aviation other photo shows cheap winder hand drill have seen lately Ace Hardware Radio Shack stores Drill hole drive wire its safe put winding wire chuck chuck can replaced want use drill Its suitable small- medium-sized rubber motors have used eight strands 3A6 no trouble cost about $13 Ignition engine questions usually concern batteries fuel ignition components have covered sources ignition components coils new strongly advise using new coils rather old ones have carefully saved Old coils may work fine internal short may very soon dramatically increase current flow will experience marked decline battery life worst possible time hastened process using three Ni-Cd batteries coils intended three volts Coils short out internally get very hot battery should run engine 15 minutes wont two main cause dreaded internal short charging coil lot current giving place dischargeso let discharge its spark Dont energize coil high-tension lead being connected plug ground Most modelers away condensers using transistorized system condenser used however usually Mylar type attached coil dab silicone-type glue solid wire leads lend themselves old practice metal-cased condensers attaching directly engine get poor runs high speed coil battery points fine suggest replacing condenser andlor spark plug Actually can forget condenser get transistorized systems Kustom Kraftsmanship elsewhere Battery questions Most fliers bother booster batteries FIG1 FRONT VIEW OF HUB n ~-1125 Jim OReilly shows calculate compound hinge angles flush fold rubber models Details text November1994 101 Rubber-powered Army observation plane tows troop glider photographer Earl Stahl published both models 50 years ago about $12 drill purchased Radio Shack can used winder largest rubber models REICHMUTH IGNITIONS1 [Electronic advance systems no moving parts] [Completeelectronicsforfixedl mechanical advance systems Direct 3 replacement popular systems] 1fl new twin system much Dower] ICUSTOM COMPONENTS Reichmuth Ignitions will supply capacitor discharge spark coils Circuit boards fixed electronic advance systems harness both switch Hall sensors Call write information quotes Dan Rechmuth 517 Ave D San Manuel AZ 85631 602 385-251 1 Arizona Time MILIA TOUCH POWER full-spectrum engine fuel treatment specially formulated K/C models Bonds electro chemically metal smooth pitted surfaces Reduce friction & heat Improves perfonnancs Reduce engine wear ces repair costs CAN BE USED AS RUN-OFF OIL TO CLEAN ENGINES - ,,, BEFOREAFTER AVAILABLE IN HANDY SQUEEZE BOTTLES OZ $595 $1295 Ask Boca Bearings local hobby shop Cell 407 998-0004 Toll-free USA 800 332-3256 Toll-f roe Canada 800 553-3256 Fax Order 4071998-0119 send $300 catalog Name Address________________ City __________________ State _____ Zip Send Enca Bearing Dept C s 2304 7040W Palmetts Park Rd Raton FL 33433 anymore okay want use current drain ignition motor about four amps means 250 mAh Ni-Cd would give almost four minutesenough three flights start launch quickly practice would recharge after two flights 250-mAh size okay class models weight critical larger models would use two 500-600 mAh Ni-Cds prefer because am accustomed fast-charging field Others prefer alkaline batteries fine have great capacity AAA size gives enough power bet problems years ago ignition caused short life old carbon-zinc pencells astounding shelf life capacity alkaline cells what makes people leave off booster circuits days Alkaline Ni-Cd matter personal preference Larry Davidson [1 Salisbury Drive North East Northport NY 11731 Tel 516 261-1256] source spark plugs coils says coils rated 24 36 volts uses two Ni-Cds champion competition flier Another champion competition flier guru comes ignition general fuels particular Bill Schmidt People seem worry about fuel lot Modem unleaded gas same old white gas get 70weight oil Bill says can get 70-weight oil Castrol brand friendly HarleyDavidson motorcycle shop However avoids using because fouls expensive plugs besides insist burning gas unleaded stuff burn now will mix castor oil unlike old white gas So say use castor Bill says use alcohol mix because rnns 1300 cooler gas heat biggest factor hurting ignition engines Klotz KL-200 straight synthetic oil KL-100 castor oil synthetic blend will mix gasoline alcohol its what would use Beware using alcohol-based fuel some old plastic tanks Klotz oil Kustom Kraftsmanship sells synthetic/castor blend what would use methanol unless rnles fly under require gasoline last column 94 think will doing 95 keep cards letters coming Giants Help PromoteI Non-Competitive i Flying Large RIC Air Craft AA membership includes quarterly magazine High Flight I MEMBERSHIP APPLICATION l NEW l RENEWAL Date19I Yearly Dues$1500 USA $2000 US Canada & Mexico $3000 US ElsewhereI Make CHECK MONEY ORDER Payable INTERNATIONAL MINIATURE AIRCRAFT ASSOCIATION INC I Name ______________________________________ Phone _________________________ Street _________________________________________ pa Box/Route Box __________________ I _________________________State/Province _________________Zip __________________ 1City IMAA _________AMA Number ___________MAAC _________Chapter _________ L TO IMAA Secretary DONE VINEYARD 205 Hilldcde Road na KS 67401 mnj 102 Model Aviation ecer artic
Edition: Model Aviation - 1994/11
Page Numbers: 101, 102
FREE FLIGHT OLDTIMERS appreciate letters contain ignition engine questions column will answer frequently asked First however will briefly discuss photos make couple product announcements photo Stinson 0-49 rubber model towing Schweizer TG-2 troop glider about 52 years old Earl Stahl designed both models took photo Stinson published July 1941 MAN Schweizer published December 1942 MAN love old photoslook attic send talked about John Ponds catalogs recent column neglected give other reason needed library source plans given such kit manufacturers name magazine month year great help ordering reprint original article Just now referred catalog get publication dates Stahls models VECO line models again being kitted Aero Engineering great classic Control Line models like Chief Warrior free flight models too notably Dakota Bipejust what need small-field flying address 1301-1311 Tuscaloosa Ave Birmingham AL 35211 Tel 205 785-9690 new address Campbells Custom Kits 4402 Weddel Dearborn Heights MI 48125 Tel 313 562-0272 moved June Lee Eve will unpacked time read About drawing actively flying AMA OldTimer rubber models never understood calculate hinge angles perfect fold never asked fear someone would tell turns out simple now wish someone told did okay ignorance mostly making hinge angles square Sears drill press would make models flew right get high enough no can see have perfect fold perfect fold looks nicer small drag reduction impresses people secret simple find angle blade 70%-of-radius point divide angle two angle forward out twist hinge line angle forward out angle must equal onehalf blade angle 70% PID ratios 10 12 14 angles will 120 140 160 Next time will try help set angles up meanwhile might look up Jim OReillys Tubestake OMT article March 1987 Model Aviation other photo shows cheap winder hand drill have seen lately Ace Hardware Radio Shack stores Drill hole drive wire its safe put winding wire chuck chuck can replaced want use drill Its suitable small- medium-sized rubber motors have used eight strands 3A6 no trouble cost about $13 Ignition engine questions usually concern batteries fuel ignition components have covered sources ignition components coils new strongly advise using new coils rather old ones have carefully saved Old coils may work fine internal short may very soon dramatically increase current flow will experience marked decline battery life worst possible time hastened process using three Ni-Cd batteries coils intended three volts Coils short out internally get very hot battery should run engine 15 minutes wont two main cause dreaded internal short charging coil lot current giving place dischargeso let discharge its spark Dont energize coil high-tension lead being connected plug ground Most modelers away condensers using transistorized system condenser used however usually Mylar type attached coil dab silicone-type glue solid wire leads lend themselves old practice metal-cased condensers attaching directly engine get poor runs high speed coil battery points fine suggest replacing condenser andlor spark plug Actually can forget condenser get transistorized systems Kustom Kraftsmanship elsewhere Battery questions Most fliers bother booster batteries FIG1 FRONT VIEW OF HUB n ~-1125 Jim OReilly shows calculate compound hinge angles flush fold rubber models Details text November1994 101 Rubber-powered Army observation plane tows troop glider photographer Earl Stahl published both models 50 years ago about $12 drill purchased Radio Shack can used winder largest rubber models REICHMUTH IGNITIONS1 [Electronic advance systems no moving parts] [Completeelectronicsforfixedl mechanical advance systems Direct 3 replacement popular systems] 1fl new twin system much Dower] ICUSTOM COMPONENTS Reichmuth Ignitions will supply capacitor discharge spark coils Circuit boards fixed electronic advance systems harness both switch Hall sensors Call write information quotes Dan Rechmuth 517 Ave D San Manuel AZ 85631 602 385-251 1 Arizona Time MILIA TOUCH POWER full-spectrum engine fuel treatment specially formulated K/C models Bonds electro chemically metal smooth pitted surfaces Reduce friction & heat Improves perfonnancs Reduce engine wear ces repair costs CAN BE USED AS RUN-OFF OIL TO CLEAN ENGINES - ,,, BEFOREAFTER AVAILABLE IN HANDY SQUEEZE BOTTLES OZ $595 $1295 Ask Boca Bearings local hobby shop Cell 407 998-0004 Toll-free USA 800 332-3256 Toll-f roe Canada 800 553-3256 Fax Order 4071998-0119 send $300 catalog Name Address________________ City __________________ State _____ Zip Send Enca Bearing Dept C s 2304 7040W Palmetts Park Rd Raton FL 33433 anymore okay want use current drain ignition motor about four amps means 250 mAh Ni-Cd would give almost four minutesenough three flights start launch quickly practice would recharge after two flights 250-mAh size okay class models weight critical larger models would use two 500-600 mAh Ni-Cds prefer because am accustomed fast-charging field Others prefer alkaline batteries fine have great capacity AAA size gives enough power bet problems years ago ignition caused short life old carbon-zinc pencells astounding shelf life capacity alkaline cells what makes people leave off booster circuits days Alkaline Ni-Cd matter personal preference Larry Davidson [1 Salisbury Drive North East Northport NY 11731 Tel 516 261-1256] source spark plugs coils says coils rated 24 36 volts uses two Ni-Cds champion competition flier Another champion competition flier guru comes ignition general fuels particular Bill Schmidt People seem worry about fuel lot Modem unleaded gas same old white gas get 70weight oil Bill says can get 70-weight oil Castrol brand friendly HarleyDavidson motorcycle shop However avoids using because fouls expensive plugs besides insist burning gas unleaded stuff burn now will mix castor oil unlike old white gas So say use castor Bill says use alcohol mix because rnns 1300 cooler gas heat biggest factor hurting ignition engines Klotz KL-200 straight synthetic oil KL-100 castor oil synthetic blend will mix gasoline alcohol its what would use Beware using alcohol-based fuel some old plastic tanks Klotz oil Kustom Kraftsmanship sells synthetic/castor blend what would use methanol unless rnles fly under require gasoline last column 94 think will doing 95 keep cards letters coming Giants Help PromoteI Non-Competitive i Flying Large RIC Air Craft AA membership includes quarterly magazine High Flight I MEMBERSHIP APPLICATION l NEW l RENEWAL Date19I Yearly Dues$1500 USA $2000 US Canada & Mexico $3000 US ElsewhereI Make CHECK MONEY ORDER Payable INTERNATIONAL MINIATURE AIRCRAFT ASSOCIATION INC I Name ______________________________________ Phone _________________________ Street _________________________________________ pa Box/Route Box __________________ I _________________________State/Province _________________Zip __________________ 1City IMAA _________AMA Number ___________MAAC _________Chapter _________ L TO IMAA Secretary DONE VINEYARD 205 Hilldcde Road na KS 67401 mnj 102 Model Aviation ecer artic