JVN Build Tip: CIM Pinions

[Brandon Holley]

Totally agree about the 12tooth pinion! Even for the one time you assemble it, it is worth it to just pass the entire motor through the 0.75" hole and tighten it in place.

I can't recall a time where I've switched out just a CIM motor, but I can imagine getting to that step and having to take the pinion off would be a pain!

-Brando

[Teched3]

As an alternative to using a smaller pinion than you want, you can make an adapter bushing for the CIM 3/4 boss and make a larger centering hole to accommodate the larger pinion. Of course, you are limited to a max diameter on the bushing by the edge to edge distance between the 10-32 FH screws to mount the CIM. In addition, you should have several CIM/Bushing motors set up so you are not "pressed" to remove a pinion if a swap becomes necessary. By the way, we have never lost a CIM motor, and have done a review of them in the past after a long competition season and post season play, and have never been disappointed in their durability.