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Speed,Combat,Scale,Racing => Speed Talk => Topic started by: john e. holliday on February 07, 2018, 04:09:33 PM
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These are being built using Larry Marx plans that were in the Ringmaster forum. He doesn't say on the plans, but I'm guessing solid wire lead outs. But I have thought of mono line buttons on the bell crank with a removable section over the wing like we used to do with our racing planes. Or does the lead out have to be separate at the wing tip? Also can I have them above the wing? ???
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Doc ,lead outs are up to u ,need to be carefull as they( the plane } like to tip over to the inside on landing and can kink the line or lead outs
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The official plans show NO controls at all, so whatever you do is legal.
Back in the day, Jim Walker would either collect a royalty or sue for it. So some designers either showed no controls or some bogus system that everybody knew would be replaced with a bellcrank.
I like my controls on the bottom of the wing with an adjustable leadout guide.
It's tough to get the leadouts inside the small elliptical wing.
I like to start with buttons and leadouts for test flying. Then if it goes fast enough to be competitive, you can switch to hooking up at the buttons.
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I did that with my first one. works ok. TS
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if it doesn't show any controls how about mono line y1 LL~
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The NASS rules define two lines of a certain length and diameter.
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Boy what a clutz I am. Spent most of the evening doing this bell crank for one of the Perky's. I decided the wings are so thin that the bell cranks will go below the wing. Hope the attached looks legal. It is .20 music wire terminated with copper wrapping. HB~>
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Boy what a clutz I am. Spent most of the evening doing this bell crank for one of the Perky's. I decided the wings are so thin that the bell cranks will go below the wing. Hope the attached looks legal. It is .20 music wire terminated with copper wrapping. HB~>
Looks like it will hold up the Brooklyn Bridge...
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With these planes doing nothing more than take off, fly fast and land there be no worry about the bell crank from my past experience of using those bell cranks. Even using cable lead outs I have yet to have one cut through on aerobatic with hundreds of flights on them. D>K
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I have the plans for the Perky and I am wondering if anyone has used a 1/2 A engine ? Would the plane be reduced in size? Any ideas would help!!
Thanks, RK Flyer
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A strong TeeDee should get it airborne. D>K
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With an 18" wingspan, a Perky is 1/2A size. It would need to be built light.
I built a 15-size Clown with a total weight of 8 ounces and it flys good on a TeeDee .049.
Rules limit nitro to 10%, which would be a killer for 1/2A. But as a sport plane you could use all you want. Maybe score a 75.