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Yeah, I second what fmxxx666 said; the only element that will limit your system voltage will practically be your controller. The QS138 will happily run at 110V or more.

> Little surprised that he only got 44AH with this big boy battery. Mine with Sanyo cells will be similar capacity. The easiest way to get decent kWh ratings regardless of voltage is to simply use better cells. With higher voltage the currents can drop slightly, so large pouch cells like e66a...

For reference, here's how the battery for my 250 is laid out: It's 20s20p with 18650. Disclaimer: I haven't actually tried putting it in, as the design was made by the person I bought the project from mid-way. Supposedly the test cardboard model they tried did indeed fit. I want to make the...

I hope you weld in some reinforcements if you cut out as much as you're drawing here.

Thanks a bunch, Don! I was planning to only use two mounts, but if they're not enough, I'll definitely move to three. Thanks for the files as well. I've noticed the one you have has a 240mm swingarm-to-engine mount distance, while i measured at 232. I'll print them and put on a piece of...

The cost would end up being more or less the same (machining included - either can be cut on plasma, water or CNC in this form easily), but for the same durability, you'd need to go with at least 3mm steel like in the Lithium Kings mount which would be heavier than 6mm aluminium. Plus if not...

Thanks for posting the build sheet. I'm actually building a CRF250 right now as well. My costs so far are 2900 eur for the bike without the ICE, but with motor, controller, and I took over the battery order for it. Technically should be ready to go, practically I'm invested about 400 eur extra...