VESC - Need 2, ill try to buy used ones from this forum
Receiver?
Controller - Any reasonably priced recommendations
Batteries:
Open to suggestions, I have a spot welder so I need batteries, nickel, as well as the wrappings? Fishtape / kapton tape to be insulated and put together? And on top of that, there’s a ton of topics in this sub about this, what would you recommend as an in depth guide to a first time spot welding DIY battery job?
I’d steer clear personally. 30Q have more capacity and can output 20A just fine, like the 25Rs, but 25Rs sag a lot. Under 20A load per cell, my 10S4P pack sags like 8-9v on average.
My next build I’m going with VTC5a, similar capacity to 25R, and they are rated for 35A or 25A depending on who’s testing them, and at 20A per cell the sag is super minimal. And they are super cheap on nkon right now.
But, 30Q is pretty much the standard, I’d recommend those over 25R for sure.
Yep, 10S2P. And 70 battery amps with those cells is super respectable for 2P… Just don’t expect a crap ton of range with a 2P config.
If you go 30Q, that would be 40 battery amps for 10S2P, but you will get better range. If you want range over torque, go 30Q… If you want torque over range, VTC5A. There’s also these, better than VTC5A even, and they were on sale for $1.99 a piece!
Double those range numbers for 4P. You can see torque ratings in there, I’d mess around with it for a bit till you settle on what you think you want out of this build. Those numbers are fairly conservative too, probably closer to charging up hills, stopping constantly and accelerating a lot under full power. You can hypermile and double your range easy, but on low power settings, crawling around, etc.
Hypermile, basically ride really easy, tuck in an aerodynamic stance, try to Regen as much power when it makes sense, limit max power output… Just trying all the things to get the absolute maximum range out of your battery as possible.
so if I have dual 5065’s and a 10s4p, what would you think my torque / speed / range would be? The calculator doesnt seem to have a setting for dual motors. And does two motors compensate for the fact that the motors are smaller 5065’s? Sorry for my bad understanding, complex topic.
