Servo horns?

[Inverse]

I have TGY-616MG servos on my Atom which I really like but it looks like I have stripped the splines on the Compass horns in what was a relatively low energy impact.
Any suggestions on replacement horns, Futaba spline?
Looking at something like this but open to suggestions.
http://www.dx.com/p/25t-cnc-aluminum...Q#.VOCW7sYRTjg

[Eric T]

If you stripped out the splines then most likely you had the wrong spline count for your servos. I had the same thing happen on my Atom when I got it, It had Align servos (25t Futaba spline), with the 23t JR horns. I replaced the horns with the proper count Compass arms, now I only strip the plastic gears when I crash!

Although if you have metal gear servos then maybe they are the right arms and the spline is the weak link. If so, I would leave it. If you beef up the arms you will probably start breaking the bolt that connects the FBL link arm to the grip. When that happens its expensive.

[FlyBri3]

Originally Posted by Eric T

If you stripped out the splines then most likely you had the wrong spline count for your servos. I had the same thing happen on my Atom when I got it, It had Align servos (25t Futaba spline), with the 23t JR horns. I replaced the horns with the proper count Compass arms, now I only strip the plastic gears when I crash!

Although if you have metal gear servos then maybe they are the right arms and the spline is the weak link. If so, I would leave it. If you beef up the arms you will probably start breaking the bolt that connects the FBL link arm to the grip. When that happens its expensive.

I agree maybe the wrong spline count or somehow a bad batch of compass arms?

I use the compass with the futaba splines on my savox servos and they go on super tight , but I have had one hard tail in hit and the other day put my 550 in inverted with positive collective and the arms are about the only thing that didn't get damaged!

My preference is to stay away from aluminum arms they have a tendency to not bend or break at all and cause other major issues like stripped servo gears (metal or plastic) just my opinion!

[Inverse]

So it would appear that some pinhead used JR horns instead of Futaba ones when they assembled the helicopter.
It's not even that difficult to tell which are which when you assembled them, they have "JR" and "FU" stamped on the back.
I may or may not have been the pinhead in question.