Brian, thanks for the offer. I just don't feel comfortable selling anything that I can't actually fit and test with an actual motor. I'd like to think that most people wouldn't be comfortable buying something built on measurements and theory with not actual testing.

I'm confused on the length issue, my motor is 72mm in total length and I get ZERO interference with the suspension and my wires didn't have to be routed in any way shape or form. Is my chassis different somehow? If I moved the whole mount forward by .25 inches, it would easily clear any wires or anything on the back of the motor this length.

That said, the only thing I see needing to be changed to use different gears is really the amount of "throw" required to get the motor closer to the spur and accomodate smaller gear center to gear center distance for smaller gears.

Brian your motor sits visibly farther back than mine, you sure it's only 70mm in length??? :)


TypeR, thanks for posting pics and comments. If you have any issues let me know.

Interesting idea (whoever suggested it) in supporting the motor on the hind end, trying to figure out how to do this. Could be tough since motor diameters seem to vary quite a bit probably need something that adjusts....

I haven't noticed any flexing once I bolted the motor down but maybe I just didn't beat on mine hard enough yet. :D

I liked the idea of getting the motor centered on the truck and getting the batts stradled on each side, but I just can't see to visualize a way that won't introduce a ton of flex and part complexity (making the cost higher).


I apologize TypeR, and the rest, but the motor mount *is* the most expensive cuz it takes the longest to machine. Unfortuneatly, I can't seem to get it simpler. The vert piece requires a 2 decking operations, a finishing op on the lip, and three tool changes to complete before hand finishing. The lower takes two drilling operations with different jigs, 6 taps, and finishing. It takes me well over an hour for each one individually, not to mention machine wear, finishing materials, and the screw hardware/materials. There are more than 300 lines of Gcode involved in making just the motor mount and I spent about 35 hours in total getting it to be a repeatable reproduceable part (including two prototypes which are in my recycling bin).

I am not complaining, as I told brian, I make very little on these and do it mostly for the enjoyment of the hobby (cars and machining) and to cover the costs of making stuff. It also helps me show just enough income on my business to keep the IRS off my back.