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Search: Posts Made By: HighPlains
Showing results 1 to 11 of 11
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Forum: Extreme Speed Prop Planes
02-14-2005, 12:47 AM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

CP,

I think that they were all set up for F1 racing, so high nitro and timed for open exhaust with the mini-pipe. I doubt that the current K&B owners will know too much about them, they just...
Forum: Extreme Speed Prop Planes
02-13-2005, 11:37 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

CP,

21.3K on an open pipe on the 50% is good. That's right in the range for that engine. Don't worry about the speed in the air, because these engines unload like crazy in the air with open...
Forum: Extreme Speed Prop Planes
02-12-2005, 09:20 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

You may have too much pitch on the prop. As a F1 engine, it would have used about 8.25 X 7.5 and turned about 21K with 65%. With 15% fuel, the same prop should run around 20K with open exhaust. ...
Forum: Extreme Speed Prop Planes
11-26-2004, 01:54 AM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

ran a bladder on an old voodoo, long time ago. Doesn't it go rich just as is runs out of fuel? If you got 4 oz of fuel, with 15% it will run about 2 minutes. If you run 65%, maybe 1 1/2 tops. I...
Forum: Extreme Speed Prop Planes
11-26-2004, 01:33 AM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

How are you planning on shutting it off? We just pinched the fuel line with a 1/16" music wire to the servo.
Forum: Extreme Speed Prop Planes
11-09-2004, 10:18 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

I would increase the wing area to around 400 sq. in. and plan on a weight of 3 1/4 lb. since you are not using landing gear? We build 500" quickies at 3 1/2 lb with gear and 4 servos. Otherwise the...
Forum: Extreme Speed Prop Planes
11-06-2004, 01:38 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

CA is just too hard to sand when joining balsa sheets. I use Ambroid model cement for joining wing skins. Still smells like modeling used to, fun to peel from your fingers, and about the only good...
Forum: Extreme Speed Prop Planes
11-06-2004, 12:56 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

I would not use 1/64 plywood on the wing. It was tried a long time ago in F-1 and the results were usually the same. SNAP-BANG-WAP, where snap is the sound of the wing folding, and wap is the hole...
Forum: Extreme Speed Prop Planes
11-04-2004, 05:10 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

In quickie 500 by the rules we are not able to use wing fillets. The typical design of the past usually placed the widest part of the fuselage about where the thickest point of the wing was located...
Forum: Extreme Speed Prop Planes
11-01-2004, 11:41 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

Vertical area around 5-6 % should be fine.
Forum: Extreme Speed Prop Planes
11-01-2004, 06:31 PM
Replies: 178
Views: 31,888
Posted By HighPlains

RE: HEY! LET'S BUILD A SPEED PLANE!!!

Interesting design Sean, but could I make a could of suggestions?

Wing - advancing tips are a lower drag design. What are advancing tips? As you move from the leading edge to the trailing...
Showing results 1 to 11 of 11


 
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