Oct 22, 2012, 10:35 AM
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Charlottesville, VA
Joined Apr 2007
17 Posts
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After a couple of bad hand launches (a qualified helper to do the launching would be a BIG help until you get things trimmed out, after that it's easy on your own). I finally got the Moray trimmed out and flying on rails. It's a tough little plane! Using the stock 1600 mAh 4S pack pushed all the way back, the CG is about a quarter inch forward of the recommended 50 mm mark, but it seems to fly fine here with nice pitch stability. There's enough elevator authority for a good landing, though it does, as you would expect, land a little hot.
Even though it was nose heavy, at least according to the recommended CG, the elevator setting on mine for normal flight is neutral or even a hair of down elevator for straight and level flight. I set my trims to be flight mode dependent and I have one setting for launch that carries a couple millimeters of up and a millimeter or so of right aileron to help counteract low-speed torque. I launch upward at about a 30 deg. angle with about 2/3rds throttle.
My initial prop/spinner setup was definitely out of balance, but rotating the spinner 180 degs. resulted in a marked improvement in vibration. The prop itself was nearly perfectly balanced.
For radio I have one of the new Spektrum AR400 receivers. It's small and full range with a separate amplified antenna. Checking data after each flight shows 0-1 frame losses per flight.
My ESC is in the prop brake mode. I don't know if others have this as well, and I've yet to find the programming setup for the stock ESC to switch it off. Not a big problem, but a free wheeling prop would increase drag some for landing and might be less likely to break. If anyone has the programming info. please pass it along.
The supplied 20C battery gets warm after a five minute flight at full power most of the time, but it's not too warm. I haven't tried a higher C pack yet.
The aileron servo fits below the receiver tray and I believe that there is room for a couple of servos if you want one on each aileron. This would give some redundancy, more power per surface, and would allow reflexing upward to help bleed off landing speed, though this doesn't seem to be as big a problem as it is with smoother finished planes like my VIP.
This is a really fun, speedy plane stock, and it will be interesting to see all the hop ups. Enjoy!
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