Diff Shimming 101 

Thank you so much. We do try our best to be non-biased.

I appreciate that!

Wow, thank you 😎👍

It is my pleasure. Thanks for joining us😎👍

same, very helpful info

Thanks! 👍

You are welcome!

Sorry for the late reply. We are doing well. Unfortunately it is winter up here and bashing has slowed up quite a bit. I hope you’re well. Thanks again for being here in the comments: it means a lot to us here. 😎👍

You're very welcome!

Very cool!

Traction is a killer for gearing. Running speed runs, especially on pavement which is done most of the time for speed, puts a lot of pressure on the gearing in the rear, since that is where the majority of the launch weight is shifted to. Tightening up the center diff puts even more pressure on the rear diff - not allowing it to bleed off the extra power to the front end. Still, shimming the "pinion" in the rear diff to close up the gap for the gears is one way to minimize the wear issue; for your diff it requires an 8mm shim: (CLN) #4738 from Calandra Racing Concepts. Also, side shimming for the differential to remove slop is paramount to proper durability. Since the teeth for the diffs are fairly small for the power they handle, the next step might be moving to the EXB rear diff with the LSD plates inside. The gearing is a bit bigger and may handle the power better. Still, we punish our rigs in high traction environments, and we have also suffered diff failures, but with proper spacing in the diffs our losses have been relatively small. Keep in mind, power creates wear and heat accelerates it too. Proper lubrication can prolong the gears for a time, but consistent observation and maintenance should get you the best results. Do not forget, bearings seat in and the gearing can change over a few batteries, so do not forget to check them now and then.

Glad it was helpful!

Glad it was helpful!

Glad to help

Aluminum is the 3nd refinement after Bauxite, Alumina.... I don't understand your point you are trying to make. The Arrma shims are steel.

Excessive play can damage any of the gears. However, we’ve never had to do that. Interesting thought though😎👍

We swap them both at once. Fresh gears with fresh gears. A used one can wear a new one faster. Thanks for asking😎👍

Never had an issue with them.

It is working on our end.

Worked OK for me.

He wasn’t speaking during the hands on process.

Hey, guys, that was intentional. We prefer relaxing demonstrations as opposed to chatter filled how-to’s. Did the video demonstrate how it’s done?

@@AJJAMStudios Yes easy to follow.