Here’s the final installment of the relatively simple Suzuki RM125 dirt bike conversion.
The setup uses the same battery module rack and holder as the other bike, with, in this case, a 40V 20ah Headway pack. To get it serviceable I had to get a new rear sprocket so I got the biggest one I could – a 51 tooth, with a 12-tooth on the front. I also had to get a rear drum – the best answer to fixing everything that was wrong with the existing one, and a steal at $20 on eBay.
Here you can see the newly covered seat, too.
So yeah, it’s hilarious to ride, as I’d hoped. As it is, it’s great for low-speed tooling around, but to get it up to the original gas bike performance I need to run it at 80V. Then, even with that little Briggs ETEK I think I’d be poppin’ wheelies and stuff. When I do that, I definitely have to go with a proper contactor, with, of course, a bigger better controller.
Remarkably, the really simple motor mount is solid as a rock, with only two mount points, but pulling directly opposite the pull of the chain. The battery rack you can barely see here works like a champ, too, and I can fit in one of the CALB 40ah packs if I want to.
…but for now it’s done. A hell of a lot of fun for a project dubbed “Spare Parts”!
OH! That’s right!
The mail came… one little addition: