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Old Oct 04, 2014, 10:01 AM
SlopeBatics's Avatar
United States, CA, Escondido
Joined Sep 2013
486 Posts
Quote:
Originally Posted by DrFragnasty View Post
Any idea what causes it to flutter?

Chris....who's fluttered his fair share of F3B ships.
1- I think it has to do with the 1mm +/- slop that the rds seems to develope.
2- I also think that BIlls hill where we DS is pretty small area with tight circuits, adding extra stress to the ship. To get any speed at Bills, a aggressive line is needed.
So hard to tell. Could not tell wich control surface it was either. Nothing looks out of the norm.
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Old Oct 04, 2014, 09:24 PM
Detail Freak
target's Avatar
Harbor City, CA
Joined Oct 2003
21,679 Posts
You might see if a light potting of the output shaft to servo splines helps you. If not, then it's either plain old gear slop in the servo, or the wiper to pocket fit.
I've heard of a few people adding a shim to the rds pocket. I equate that to ca in the horn hole, but it's a little harder to accomplish.
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Old Oct 04, 2014, 09:35 PM
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United States, CA, Redondo Beach
Joined Sep 2012
506 Posts
Wonder if it's just flexing of the surface. Long ailerons and elevator with light surfaces fluttering toward the tips.
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Old Oct 05, 2014, 01:39 AM
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Avaldes's Avatar
United States, CA, San Luis Obispo
Joined Aug 2006
1,564 Posts
Generically speaking, the surfaces on Baudis airplanes are quite stiff, as is the rest of the wing. Which would lead one to look at control slop and mass distribution as the two "lowest hanging fruit."
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