Futaba BLS351 suitable for giant scale aircraft?

[Les44]

I've seen a few posts from owners of the Futaba BLS351 servo who had oscillation problems when connecting these servos to giant scale aircraft control surfaces. I wonder if they are isolated cases or if these servos are not suitable for giant scale aircraft. Futaba claims no knowledge of problems. Any thoughts?

[Alexander Cui]

	Quote: Originally Posted by Les44
	I've seen a few posts from owners of the Futaba BLS351 servo who had oscillation problems when connecting these servos to giant scale aircraft control surfaces. I wonder if they are isolated cases or if these servos are not suitable for giant scale aircraft. Futaba claims no knowledge of problems. Any thoughts?

I have two NEW Futaba BLS352 servos mounted on 29% Extra 260.One servo has oscillation problems when connected to surface.I don't know how to deal with it.Maybe some problems with the circuit of the servo.I contacted with Futaba seller,I was told that they will give a check after paying $.

[jtsails]

Les44,
I've been using these since they first came out on two different planes. I have used both the BLS 351 and BLS451 on these and have tried many configurations but I always get the same result, the same rudder oscillation that others have reported. I have 12 BLS451s and 3 BLS 351s. I have put them on a pull-pull single servo, push pull single servo, and push-pull dual servo. Every configuration has produced the ocillation, but it only does it on the rudder, never on the other surfaces. It doesn't seem to affect the flight performance or power usage, in fact, the power usage of these servos seems to be quite low and other than this ocillation I really like them. On the 35% plane I just put together, I used them on everything except the rudder, where I used a 9156. I like this setup so much that I'll probably go back and swap the rudder servo on the other plane.
JT