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Old 04-12-2012, 10:26 PM
DA isn't Haulin it? It Drags
Hammerman's Avatar
Tucson AZ
Joined Mar 2006
1,546 Posts
Originally Posted by wings19 View Post
In most 40% aircraft 2 servos is enough. However, I'm putting together a 125" Extreme Flight Extra where it is strongly recommended to use 3 servos due to the size of the ailerons. This thing has pretty huge wings. I'm flying it for IMAC also so I want crisp snaps.
The assembly manual instructs you to use three on the ailerons. The trailing edge is thin on the EF Extra. At first I only installed two however I did not fly it that way and after looking at it and moving the ailerons I installed the third. There is no problem with the power of three.
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Old 04-13-2012, 12:14 AM
Bring back the Cap
columbo's Avatar
Norman, Oklahoma USA
Joined Jan 2006
894 Posts
Hmmm, I didn't realize it was going on a plane that is actually larger than most 40%. If 3 is recommended by EF, then I guess you need 3. I thought it was a typical 118-122 inch 36-40 lb 40 percenter which I have seen many guys fly with two aileron servos no problem.
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Old 04-13-2012, 03:53 PM
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nebwake's Avatar
United States, NE, Lincoln
Joined Jan 2012
597 Posts
if you get the ailerons mechanically perfect you can use a Y and get it done that way. I'm running my 40% on 8 channels! 2x hitec's on each aileron mechanically perfect and programmed using a "Y", 1 8711 per stab mixed at rx, 2x 8711's rudder mixed at rx, throttle and cutoff. Im also using Y's for the batteries but might switch to a powersafe rx.
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