> Will G Wrote:
> -------------------------------------------------------
> > Nick Haber Wrote:
>
> > -------------------------------------------------------
>
> >
>
> > Did you use 18650 cells and spotweld them together or what? That's how
>
> > we built the battery pack on the race bike we built. We won the
> electric
>
> > class at Pike's Peak the year after this picture was taken:
>
> >
> https://car.osu.edu/sites/car.osu.edu/files/media/rw-3xdevilsplayground_web.jpg
>
> >
>
> > I've been wanting to do an electric moped for a while but it's just so
>
> > expensive to get one with the range and speed I want.
>
> Sweet motorcycle!
>
> Yeah, I used 140 18650 Samsung 30q cells, wired 20s7p, and spot-welded
> them together. They were wrapped in Kapton tape and foam with a 100amp
> BMS.
>
> With parts, tools and a donor bike it cost me about $2500, but I thought
> that was cheap compared to the ONYX eMoped with slightly better stats.
> The biggest investment is definitely the batteries. What I really want
> to make is an electric car. But don't have room/money/time to invest
> that much in it.
That's awesome, I've crunched the numbers and have made many excel spreadsheets when I decide I want to build one and that's about the price I always came up with. The lack of cheap good batteries on the market is definitely a killer. Maybe if some breakthrough in batteries hits the market I'll build one.