That depends on how well built the other bot is.

Interesting that you say no you dont want my design idea and suggest a design that is identical to the one I just said in every way but adding the 36v in, something that I didnt even mention. They do work on 36v though. I think they're up to 40v max so should work. What sort of current that would draw I dont know, but what I do think is that, like Kenny said, you'll struggle to get that power down.