Play in RCM Losi 8ight mount

[ptt81]

Originally Posted by brushlessboy16

2200 is wayy too much motor for a buggy, I have tried that setup lol

start with a 14t pinion and gear from there

well i bought the motor new a while back so I want to use it instead of buying another motor. I also heard that the smaller CC 2650kv run hotter than 2200kv, any thought on that? What's wrong with using the 2200kv in this buggy?

[Ryu James]

hey pt881,

you are fine to use that 2200kv motor on 4s in your buggy. it will be perfect. extremely fast and cool temps. i have had 3 losi 8ights and ran all of them on 2200kv on 5s and even tried 2700kv. the 2200kv on 4s is a great setup.

as for the ratcheting noise in the rear...that is "ok" if there is no binding but there is a way to minimize that sound or eliminate it. those shims you used for your center diff are actually able to be used in the rear diff bulkhead also to adjust the gearing mesh of the rear diff and pinion. you can use shims to adjust the mesh just right to eliminate that noise....and get smoother power transfer. but here is the most simple thing to do to eliminate that noise:

it will require you disassemble the car so you can access the rear bulkhead. once you have the rear bulkhead open take out the diff. then remove the rear cvd from the pinion gear. now, put fresh threadlock on your set screw that holds the cvd onto the pinion gear shaft. from inside the bulkhead push on the pinion gear as hard as you can. while doing this put on the cvd and lock down the set screw with the cvd as close to the bearing and bulkhead as possible. make sure there is absolutely no play in the pinion gear to move inward or outward. now put the rear diff back in and try the engagement. notice it any quieter? this should do the trick almost every time. does this make sense? let us know if you have questions.

[ptt81]

Originally Posted by Ryu James

hey pt881,

you are fine to use that 2200kv motor on 4s in your buggy. it will be perfect. extremely fast and cool temps. i have had 3 losi 8ights and ran all of them on 2200kv on 5s and even tried 2700kv. the 2200kv on 4s is a great setup.

as for the ratcheting noise in the rear...that is "ok" if there is no binding but there is a way to minimize that sound or eliminate it. those shims you used for your center diff are actually able to be used in the rear diff bulkhead also to adjust the gearing mesh of the rear diff and pinion. you can use shims to adjust the mesh just right to eliminate that noise....and get smoother power transfer. but here is the most simple thing to do to eliminate that noise:

it will require you disassemble the car so you can access the rear bulkhead. once you have the rear bulkhead open take out the diff. then remove the rear cvd from the pinion gear. now, put fresh threadlock on your set screw that holds the cvd onto the pinion gear shaft. from inside the bulkhead push on the pinion gear as hard as you can. while doing this put on the cvd and lock down the set screw with the cvd as close to the bearing and bulkhead as possible. make sure there is absolutely no play in the pinion gear to move inward or outward. now put the rear diff back in and try the engagement. notice it any quieter? this should do the trick almost every time. does this make sense? let us know if you have questions.

I'm glad to hear the 2200kv on 4s works good. That's what I have, I plan to run the 2200kv with MMM, 4s 5000mah 30C, 14/48 gear. I hate to have to buy something when I already have something.

I appreciate your time for the write up but I'm not clear as to what you said about fixing the rear diff, may a video would help, but im not going to mess with it until I run it for a while, may be the sound will be gone once the gears are worn a bit.