Motor shaft

[Kratonparts]

my outcast motor has 2 flat sides on the shaft . Pinion gear keep moving and damaging the spur and pinion. Does anyone have a fix

 

[Tunedfrog]

Welcome in, when you install the grub screw, do you add blue loctite first? Also if you do, it needs to set at least 24 hours.

 

[olds97_lss]

I use orange loctite on my pinions that have 2mm set screws. Holds a bit better than blue, but not as permanent as red. On 2.5mm set screws, I use red, but then I use heat to remove them just in case.

Also, to get them tight enough, you really need a good wrench. An cheap allen key isn't good enough, it will just round out the screw and wrench if you try tightening it enough.

MIP speed bits aren't too expensive. Just make sure to not get the ball end wrenches.
https://www.amazon.com/MIP-Metric-Speed-Tip-MIP9512/dp/B00D7DJVEI

 

[tntpoof]

ok did this come from arrma with 2 sides on it if it did that is a factory defect and id email them and show pics and say Id like a new motor asap..please

 

[olds97_lss]

ok did this come from arrma with 2 sides on it if it did that is a factory defect and id email them and show pics and say Id like a new motor asap..please

The description for the blx2050kv says there are 2:
"A dual motor shaft flat section provides a safe and secure pinion gear fitting. "

https://www.arrma-rc.com/part/AR390205

My old BLX2050kv from my 2018 outcast has 2 flat spots. Pretty sure their pinions come with 2 set screw holes/screws as well.

 

[tntpoof]

well .. if it has 2 set screws use them both...
https://www.amazon.com/Battery-Char...keywords=charging+squid&qid=1603126503&sr=8-5