Marcus Posted December 8, 2007 Share Posted December 8, 2007 My Dad has recently finished building a Ripmax Se5A and we've discovered a porblem. Ever since we took out the mocro reciever, and put in a dual conversion Futaba, the aileron servos (Tamiya Acoms As-16 s) jitter wildly in the central position. They're connected by a Y-lead. We've checked that its not that receiver, or that it is the aileron channel. By the way, I flew it for its first flight last week. Does anyone else have one to tell me how it should fly? I found it wildly over sensitive and it didn't want to land into a stiff breeze. Quote Link to comment Share on other sites More sharing options...
Colin Hostler Posted December 8, 2007 Share Posted December 8, 2007 First of all do a range check(aerial down on tx and about 30 paces)does the duel con rx have a duel con crystal fitted?Low battery`s and 2 servo`s in the same channell? I`m not saying these are faults, just possibilities.Other than that change the servo.As for the flight, without a doubt centre of gravity too far rearward,add a little wieght to the firewall.Good luck.Colin. Quote Link to comment Share on other sites More sharing options...
Marcus Posted December 8, 2007 Author Share Posted December 8, 2007 Yeah, the crystal is correct and we were standing next to it with the Tx. Re: Same channel:2 servos, they are on a Y lead. Everything else was fine though(Elev. Rudd. Thr.) Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted December 9, 2007 Share Posted December 9, 2007 Have you tried each servo seperately, and in different channels of the recvr? You are really just into a process of elimination scenario here. It could be the servo (s), servo wiring / plug, or the Y lead, or the rcvr socketry, or the battery, or length of leads, and so on. As I say, try each piece of the puzzle in different scenarios ( I take it you have another receiver to use as trial - just on the bench.... ) As they are aileron servos, then presumably the total lead length involved is quite long. This can sometimes cause unwanted "noise". Quote Link to comment Share on other sites More sharing options...
Former Member Posted December 9, 2007 Share Posted December 9, 2007 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Marcus Posted December 9, 2007 Author Share Posted December 9, 2007 Are any servos more prone to jitter than others? Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted December 9, 2007 Share Posted December 9, 2007 It's unusual in this day and age Marcus, most servos seem to be fit for purpose, it's usually a case of getting servos that are equal to the task in hand ie. have the required torque/ pulling power. Naturally older servos or ones that have seen a few accidents may have wear or damage that could mean they have the jitters... Quote Link to comment Share on other sites More sharing options...
Former Member Posted December 10, 2007 Share Posted December 10, 2007 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Marcus Posted December 22, 2007 Author Share Posted December 22, 2007 We have now fixed that darn jitter, but only by fitting 2 new servos and modifying the Y-lead. My Dad thinks it was the amount of wire that was causing it, something to do with the wire getting a positive voltage and it feeding back to the Rx lalala.... Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted December 22, 2007 Share Posted December 22, 2007 So in other words your dad deduced that it was what I suggested it might be 2 weeks agoIncidentally...it is not the wire "getting a positive voltage" but more as I described....electrical "noise". Long servo leads can act as aerials. Quote Link to comment Share on other sites More sharing options...
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