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Old 03-18-2010 | 11:08 PM
  #119  
TonyF
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From: Rosamond, CA
Default RE: CA Models ONAS

Sorry for the delay in posting, but I have some info on Onas set-up.

The CG on mine is at the front edge of the wing tube. This was checked with the model assembled and battery installed, but the canopy off. I can't give you incidence exactly, but my wings are pretty much aligned with the small dots that were on my fuse. I just adjusted the stabs until the elevator trim was at neutral.

I am using five flight conditions. A normal, a snap, a spin, a stall turn and one for landing. The landing one just has a little more elevator, aileron and rudder throw then the normal and it also turns off the low throttle/down elevator mix. I enter a spin in the spin mode, then at the break I switch it back to normal. I use some aileron in the spins. I am using 2% left rudder with low throttle and a bit of down elevator with low throttle. Right now I am using 3% differential. I do have some mixing in rudder/aileron and rudder/elevator. Just adjust as needed. Use expo settings as desired. Definitely seal the aileron hinge line. That made a big difference on mine. The rudder is very powerful, so be ready for that.

Here are the throws. They are in degrees. + means up elevator.

Aileron
Normal - 9.5 degrees, Snap - 18 degrees, Spin - same as normal, Stall Turn - Same as normal

Elevator
Normal - +10, -11, Snap - +13, -13, Spin - +18.5, -18.5, Stall Turn - Same as Normal

Rudder
Normal - 21 degrees, Snap - 22 degrees, Spin - 35 degrees, Stall Turn - 35 degrees

I added a slight bit of downthrust to mine. If you move the CG back you may not need it. If it's a glow powered model you definitely won't need it. I had been using an APC 20.5 x 14 on the Neu motor, but the last time I went out I tried a 21 x 13W and liked it. Not set in stone yet though. As with all models, the only time you stop trimming is when you quit flying it. I am always tweaking on mine.

Hope this helps!