"Direct Drive to Diff" MT2 18SS

[MetalMan]

Originally Posted by GO-RIDE.com

MetalMan, that is a really cool project. Thanks for sharing the build. Is there a smaller outrunner motor that would work good with a MambaMax and fit in a CRT.5? I really like my CRT.5, but I wish it was lighter and had more room on the chassis for batts. Does removing the center diff make driving on a track a lot harder? Is the direct drive system more for bashing?

Thanks again!

I'm sure there is a smaller outrunner that would work just fine. In his Redcat 1/10 4wd truck lincpimp is using a 2826, which is a bit smaller than mine. You'll want a motor with a kv of ~900 if you use 4s Lipo and 3.5" tire to achieve 40mph. The Mamba Max might have difficulty starting the outrunner with its current software, but the future software release (if it ever comes out) should fix that.

I honestly couldn't say if this setup is good for bashing. Bashing can put a lot of strain on drivetrain parts as it is, and if you remove the center diff and not have a slipper clutch with an outrunner setup, you'll put even more strain on the drivetrain components.

As for driving with this setup on a track compared to a center diff, I have absolutely no idea. We can make guesses, but no one has tried a "direct drive to diff" outrunner setup on the track so far, and certainly no one has compared it to an inrunner/center diff setup.


Well, I have good news. I took apart the MT2 diffs and found no metal shavings in either the diff housing or the diff cup. There was, however, a wheel nut that loosened while driving last night, which caused one of the wheel to get stripped at the hex (the MT2 has metal drive hexes). That was the problem that I thought was the rear diff.