*gear reduction unit

[CustomRCmodels]

Originally Posted by Lil Giants

The big grippers I'm running are a bit taller than the stock tams of 83mm and I use the 12 tooth plastic pinion, that comes with wdc motors, on the output shaft from the twin motor coupler into the tam trans... the final drive output is somewheres around 50 rpm at the drive axle... and you're talking having ten times that with your wdc? That seems pretty quick for a heavy haul tractor.

The white tractor in my vids is usually running around in 2nd. I rarely ever use 1st. And flip into 3rd running empty, which is a bit faster than walking.

Joe ,
Don’t you use the 3:1 version of the Wedico double-motor coupler type I made up for Ric ?
I don’t remember if I had send you the gear to do that yourself , or if you did get it from Ric ?

[Lil Giants]

Originally Posted by CustomRCmodels

Joe ,
Don’t you use the 3:1 version of the Wedico double-motor coupler type I made up for Ric ?
I don’t remember if I had send you the gear to do that yourself , or if you did get it from Ric ?

Yeah, that's part of the 6.2 additional reduction. 3:1 in the twin motor coupler and 2.1 in the t-case.

Nathan, with the 55 turn motor and 3:1 axles, I'd think you'd want 25 or 30:1 planetary box. Your wdc tires will be about 15mm smaller diameter.