How to keep pinion from falling off?

[ReV:-O]

Hi guys,

I have a converted Hyper 8 running on 6s. It uses Mod1 gears and as a result, there is a fair amount of vibration between the pinion gear and the spur.

My problem is, the pinion keeps sliding down the shaft and falling off. At the moment i'm using removable thread lock to keep the grub screw in place. I'm worried that if I use non-removable thread lock, it will still slide off but I wont be able to get the grub screw out.

Any thoughts or experiences?


Cheers for any help!