Control Line NAVY CARRIER Dick Perry THE TOPIC engines month dis cussion two relatively new untried engines Classes II show some real promise anyone willing work Class L engine has hot topic conversation RC Pylon Racing circles OS Max 4OVR-P rear-induction rearexhaust ABC engine designed specifically racing although obviously uses some same molds has same bore stroke 4OVF front-intake RC Pattern engine similarity ends little interchange ability parts Brian gilversmith has running reports excellent results both top-end power idle definitely type engine Carrier fliers have grown accustomed over years Its exhaust timing approximately 1 60o intended piped oper ationand runs best high rpm props much smaller usual Class Carrier engines seems quite happy speeds 23000 rpm above Power torque probably up its greatest potential open exhaust would run Carrier may benefit lowering liner raising head regain proper head clearance Brian has running 0016-in head clearance 72% nitro blowing plugs pipe timing idle can sometimes problem Brian has devoted quite bit time fuel getting reliable idle low 3800 rpm uses K&B exhaust butterfly Perry pump carburetor 60-size idle mixture schedule modified engine seems need rather cold plug idle properly happy usual RC-type plugs OS Max 4OVR-P has significant potential should reward modeler willing work reliable idle proper propeller optimum high-speed performance Class II have 60 RC Pattern engines developed lately have excellent potential Carrier price kept low side unreasonable mass pro duction wide distribution through discount houses price availability 60 may completely overcome its 7% displace ment disadvantage all-out competitor have some 65 engines made OS OPS Rossi intended marine CL Speed competition have expen sive due limited quantities have almost universally set up pipe/mini-pipe operaton timing little radical openexhaust Carrier flying its idle requirement especially true considering rather limited number commercial props Class II higher torque require OS 65R5R has run well Rev-Up 10-8W significantly better good side-port Supertigre Rossi engines past Rossi OPS 65 Speed engines probably will perform similarly unless prop can found will allow reach maximum potential engine breaks norm Rossi R65 RC RV Normale engine available ABC ringed versions rearinduction engine thus should have slight advantage volumetric efficiency compared front-intake Pattern engines well having larger 65 displacement What does have radical timing piped Speed engines example have examined has bore 0977 248mm stroke 865 22mm giving itadisplacement of0648 cu Exhaust timing quite reduced 1400 com pared other 65 engines side ports remain open 1080 boost port fully open 1000 raised corners boost port open 1140 timing engine should produce better torque perform well larger props common Class H rear-induction disc valve opens 400 ABDC closes 580 ATDC engine has other feature partially compensates high cost typical type Continued page 1S4 60 Modei Aviation original Douglas AD raider flown Ron Hasse King Orange International Jacksonville FL Supertigre 60 0ower Frank Stetson uses Supertigre Bluehead Perry pump carb Guardian Side-port engines type give torque larger Class II props Rossi Brian Silversmiths Class II Guardian uses Kavan pressure carb George Broan exhaust baffle Unlike other 65 engines available piped unpiped versions 1 25LiaflK oseriing ilelicat uses lightweight Fox fitted RC carb aL/ i/U82 u NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/G its standard reference book L6 Will Ever Need Available through local hobby shop use coupon p-I end copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales las Li charge Li Mastercharge Li] visa charge No________________________ Exp Date _________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton Virginia 22024 1 Kraft RIC Electronics Lii Low Repair Costs rcuM~i Kraft Customers MAXIMUM Service Charges 4-7 channel systems$3250 2 channel systems$2650 Parts Shipping Extra 1685 Beckwith Dr Hudson OH 44236 Servo reversing now available 7C & 7CS 1976-81 transmitters aileron elevator rudder throttle $3500 216 655-2278 altitude zero speed high flier would going 1575 mph possible practice flying exclusively FAI pylon style order make both steady flight low flight natural thing under weather conditions Thanks Charlie Thats month guys rest article will appear next Speed column Meanwhile suggest start looking flying FAI Speed very challenging Gene HempeL 301 N Yale Dr Garlan4 TX 75042 CL Navy Carrier/Perry Continued page 60 engine has large-bore carburetor should readily adaptable Carrier operation using pump exhaust pressure bore 105mm narrow 22mm spraybar effective choke area substantial 64 sq mm in-flight adjustable needle valve feature can readily bypassed conventional three-line operation crankcase 170 43mm wide bolt spacing205 52mm 985 25mm Richard L Perry 46 Woodhill Dr Golds boro NC 27530 Extra Hands/Jennings Continued paae 61 electrical solderless ring tongue Loop control line through around again through crimping eye lug crimp lug other end control line make normal soldered leadout-constructed loop about inch diameter Make tether aircraft tether should attached solid struc ture rear aircraft use cap screw blind nut sure glue threads prevent vibration backing screw out will need purchase long-shank screw driver shank must 3/16-in diameter less Normally blade must ground down will go through release look Safe- Loc closely will see well-designed features positive opening action safety lock mechanism Upon first look difficult see operates safety mode starting engine adjusting needle valve mode air craft can rest ground held vertical position will allow fine-tuning needle valve ready mode used after engine running correctly aircraft resting ground Check see tether loop right position Release safety catch pick up control handle Pick up release handle Tug lightly triggers launch aircraft immediately starts moving forward own After finished flying release can packed up quickly easily fits compactly field box release allows go flying yourself safety mechanism positive opening action assures operating want SAFE FLYING IS NO ACCIDENT 154 Model Aviation
Edition: Model Aviation - 1982/07
Page Numbers: 60, 154
Control Line NAVY CARRIER Dick Perry THE TOPIC engines month dis cussion two relatively new untried engines Classes II show some real promise anyone willing work Class L engine has hot topic conversation RC Pylon Racing circles OS Max 4OVR-P rear-induction rearexhaust ABC engine designed specifically racing although obviously uses some same molds has same bore stroke 4OVF front-intake RC Pattern engine similarity ends little interchange ability parts Brian gilversmith has running reports excellent results both top-end power idle definitely type engine Carrier fliers have grown accustomed over years Its exhaust timing approximately 1 60o intended piped oper ationand runs best high rpm props much smaller usual Class Carrier engines seems quite happy speeds 23000 rpm above Power torque probably up its greatest potential open exhaust would run Carrier may benefit lowering liner raising head regain proper head clearance Brian has running 0016-in head clearance 72% nitro blowing plugs pipe timing idle can sometimes problem Brian has devoted quite bit time fuel getting reliable idle low 3800 rpm uses K&B exhaust butterfly Perry pump carburetor 60-size idle mixture schedule modified engine seems need rather cold plug idle properly happy usual RC-type plugs OS Max 4OVR-P has significant potential should reward modeler willing work reliable idle proper propeller optimum high-speed performance Class II have 60 RC Pattern engines developed lately have excellent potential Carrier price kept low side unreasonable mass pro duction wide distribution through discount houses price availability 60 may completely overcome its 7% displace ment disadvantage all-out competitor have some 65 engines made OS OPS Rossi intended marine CL Speed competition have expen sive due limited quantities have almost universally set up pipe/mini-pipe operaton timing little radical openexhaust Carrier flying its idle requirement especially true considering rather limited number commercial props Class II higher torque require OS 65R5R has run well Rev-Up 10-8W significantly better good side-port Supertigre Rossi engines past Rossi OPS 65 Speed engines probably will perform similarly unless prop can found will allow reach maximum potential engine breaks norm Rossi R65 RC RV Normale engine available ABC ringed versions rearinduction engine thus should have slight advantage volumetric efficiency compared front-intake Pattern engines well having larger 65 displacement What does have radical timing piped Speed engines example have examined has bore 0977 248mm stroke 865 22mm giving itadisplacement of0648 cu Exhaust timing quite reduced 1400 com pared other 65 engines side ports remain open 1080 boost port fully open 1000 raised corners boost port open 1140 timing engine should produce better torque perform well larger props common Class H rear-induction disc valve opens 400 ABDC closes 580 ATDC engine has other feature partially compensates high cost typical type Continued page 1S4 60 Modei Aviation original Douglas AD raider flown Ron Hasse King Orange International Jacksonville FL Supertigre 60 0ower Frank Stetson uses Supertigre Bluehead Perry pump carb Guardian Side-port engines type give torque larger Class II props Rossi Brian Silversmiths Class II Guardian uses Kavan pressure carb George Broan exhaust baffle Unlike other 65 engines available piped unpiped versions 1 25LiaflK oseriing ilelicat uses lightweight Fox fitted RC carb aL/ i/U82 u NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/G its standard reference book L6 Will Ever Need Available through local hobby shop use coupon p-I end copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales las Li charge Li Mastercharge Li] visa charge No________________________ Exp Date _________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton Virginia 22024 1 Kraft RIC Electronics Lii Low Repair Costs rcuM~i Kraft Customers MAXIMUM Service Charges 4-7 channel systems$3250 2 channel systems$2650 Parts Shipping Extra 1685 Beckwith Dr Hudson OH 44236 Servo reversing now available 7C & 7CS 1976-81 transmitters aileron elevator rudder throttle $3500 216 655-2278 altitude zero speed high flier would going 1575 mph possible practice flying exclusively FAI pylon style order make both steady flight low flight natural thing under weather conditions Thanks Charlie Thats month guys rest article will appear next Speed column Meanwhile suggest start looking flying FAI Speed very challenging Gene HempeL 301 N Yale Dr Garlan4 TX 75042 CL Navy Carrier/Perry Continued page 60 engine has large-bore carburetor should readily adaptable Carrier operation using pump exhaust pressure bore 105mm narrow 22mm spraybar effective choke area substantial 64 sq mm in-flight adjustable needle valve feature can readily bypassed conventional three-line operation crankcase 170 43mm wide bolt spacing205 52mm 985 25mm Richard L Perry 46 Woodhill Dr Golds boro NC 27530 Extra Hands/Jennings Continued paae 61 electrical solderless ring tongue Loop control line through around again through crimping eye lug crimp lug other end control line make normal soldered leadout-constructed loop about inch diameter Make tether aircraft tether should attached solid struc ture rear aircraft use cap screw blind nut sure glue threads prevent vibration backing screw out will need purchase long-shank screw driver shank must 3/16-in diameter less Normally blade must ground down will go through release look Safe- Loc closely will see well-designed features positive opening action safety lock mechanism Upon first look difficult see operates safety mode starting engine adjusting needle valve mode air craft can rest ground held vertical position will allow fine-tuning needle valve ready mode used after engine running correctly aircraft resting ground Check see tether loop right position Release safety catch pick up control handle Pick up release handle Tug lightly triggers launch aircraft immediately starts moving forward own After finished flying release can packed up quickly easily fits compactly field box release allows go flying yourself safety mechanism positive opening action assures operating want SAFE FLYING IS NO ACCIDENT 154 Model Aviation