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  • July 27, 2017, 02:42:22 AM

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61
Stunt Hangar Hobby / Re: Order #911
« Last post by john e. holliday on Yesterday at 03:58:44 PM »
Guess you figure out log in problem. VD~
62
Engine set up tips / Re: Tower 40 engine set ups
« Last post by RandySmith on Yesterday at 03:54:05 PM »
My setup for the Tower 40 is to B&B the motor. ( balance crank make sure all fits are in specs) Cut heat dam on head, fins, and install  either  a  .255  venturi with OS NVA, or  better, a  PA NVA with  .281 venturi,  1 or 2 head shims, NO change to the Excellent head plug in, fuel with 22 to 24% oil mostly ( 3/4) synthetic  oil.  Bolly  12 x 4 is best I have ever seen on this, or  use a  Power Point  11 x 4, Z  pro 11 x 4,  Cyclone  11 x 4.5  2 blade props, launch in mixture cackling 4-2 or just barley into a 2 stroke, engine will unload within 1 lap  and get a little  richer,  open free flowing  tube, or  tongue muffler .
some get  a 11 x 5  and run a 4/2,  DO NOT  use as 6 pitch prop with this setup, it will  run away , DO NOt use a very restrictive muffler, use whatever nitro you need for the  Weather/altitude/humidity

Randy
63
Engine set up tips / Re: Runaway
« Last post by Dane Martin on Yesterday at 03:53:16 PM »
Tim and Brett helped me fix a similar situation.
Easy thing, remove the muffler and leave everything else alone. If that helps, drill more holes.
Then,
Different venturi. Turn yourself out a .200 ID venturi. Start there and open a little if needed

What prop are you running?
64
Open Forum / Re: Skyray build Finally done.
« Last post by Mike Lauerman on Yesterday at 03:41:50 PM »
Some envy here, Mark... Procrastinator envy. Three beauties, excellent craftsmanship.
Somehow, I thought the pink would have been more pale; 'Pinker', if you will. That 'Rose petal pink' isn't near as bad as it sounded...actually, maybe 'correct' for these times!
Good hunting...
65
Open Forum / Re: Skyray build Finally done.
« Last post by Steve Fitton on Yesterday at 03:39:27 PM »
Those are awesome!
66
Engine set up tips / Re: Runaway
« Last post by Tim Wescott on Yesterday at 03:36:24 PM »
Using a wrong engine.  The 46LA is a right engine.

Using the wrong fuel.  It sounds like you have the right fuel.

Using the wrong prop.  Too much pitch means you try to slow it down too much with the needle, it gets "on the step" in the air, and then -- away you go, with rather an excess of line tension.

Using too big a venturi.  Too much venturi means you try to slow it down too much with the needle, it "gets on the step" in the air, and then ...

What prop?  What venturi? 

I put on nylon mesh (not pantyhose, as your PM made me realize), while leaning out for the same level lap time, until it starts getting weak in the overheads, then I back off.  You could do the same with different venturi sizes.
67
Engine set up tips / Re: Tower 40 engine set ups
« Last post by Bootlegger on Yesterday at 03:09:26 PM »
Randy, that sure would help, sorry that I forgot, the engine is stock, nothing done any where, using a .290 venture, your needle assy, and the rest is stock...
68
Open Forum / Re: Bird brained flying buddy.
« Last post by Garf on Yesterday at 03:05:38 PM »
22 Magnum hollow point.
69
Carrier / Re: Nelson .15 cooked?
« Last post by Jim Roselle on Yesterday at 02:58:21 PM »
Thank you!
70
Open Forum / Re: Skyray build Finally done.
« Last post by RknRusty on Yesterday at 02:52:08 PM »
Good work, Mark. Nice looking planes, they should serve you well. I think you made the perfect engine and tank choice.
My first old Skyray was tough as nails, so they can take a lick and survive to keep on flying. Good luck advancing your flying skills.
Rusty
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