ORIGINAL: Flyboy Dave
Where is your balance point ? I set my tank up with no clunk....just the pick-up
at the rear of the tank, near the bottom, and the vent in the normal high position.
This plane will be flown like a normal (turbine) Bobcat....circles, rolls, and loops....
....all positive G's....I don't need no stinkin' clunk....
I am going to yank the YS .63FZ....not enough power, and put in a Tower .75. I'll
be using an 11-8 prop....not the wimpy 12-6. [
FBD.
Well Dave you caught me over here lurking in the glow engine forum, I almost posted this in speed planes but I thought I would try to stay in spirit with the forum as this is the glow engine question place...lol.
Are you pulling my leg? no clunk, I'll bite on that one when I see it...lol.
Hey I tried the 11x8 prop and it does not push near the air the 12x6 does (on the ground that is) I don't know if it would be any better in the air.
I wish you would hurry up you have been talking about slapping in that .75 for a couple of weeks, that way you could figure all this weird stuff out and I could just read the answers and go on my happy way....(sorry I had to)...
Anyway, I have asked this question two different places now and for the moment I'm sticking with my backpressure interference theory.
These engines don't create a whole big bunch of backpressure, so I don't think it would take much to have an effect. If I get really motivated between now and Saturday I'll fire it up in the driveway and direct my aircompressor nozzle at it.
Oh and on the balance point I'm right at 10.3, I'm gonna recheck it with the dubro deflector on there but I don't think it will change much. Even if it does I don't think it will hurt it was not overly sensitive when I flew it. I would just about bet that 10-11 inches will work.