Thread: Servo horns plastic or metal??

You will need a nut at the back.

As above, you want to use a nut on the back (don't forget loctite on nut thread).

I've heard of some plastic Align servo horns stripping in flight (or was it on Align servos??) where metal fixes it - but other than that I would recommend plastic over metal to save servo gears.

I'd always use plastic myself for the same reason. I can imagine aswell links more likely to bend & servo's burning out with a metal horn, i'd prefere the horn to give way. I recently went from a skinny horn on my Gaui 200 to a beefy one & the difference in the collective response was huge but i doubt you'd notice the difference on a 500 as the horns are already beefy

I would recommend plastic over metal to save servo gears.

I'd always use plastic myself for the same reason.

Unless you actually know the model it is difficult to just say use plastic servo horns. Plastic can be thick or thin soft or hard. On the 500EFL the ball is on quite a long standoff and there will be a reasonable amount of leverage that will cause twisting on the servo horn. Maybe you could do a test when it is together. If you see the servo horn twisting then you will need to go for something stronger.

I use metal horns now after seeing squeakys velo go in at champs due to tail servo horn striping, also seen a align horn strip and not botice till next flight when trims are all over the place