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« on: November 08, 2021, 05:31:32 AM »
EMF forums here tend to coalesce on commercially-available vehicles as a starting point. The "endless-sphere" web forums are known as a valuable resource for DIY conversions, and in great depth too.
Some of the secret sauce? Motor controllers! Quite a lot of motor controllers exist, and almost surely the controller you decide on will determine limitations of battery and motor selection, also just plain limitations as the motor controller may depend on computer programming that you are forbidden from modifying or even having knowledge of.
To that end I suggest first determine if the community-supported VESC brand of controllers would work for your application? If yes, do that. There are a wealth of examples for VESC-based powertrain on all manner of vehicles. If no, then consider taking the powertrain from any existing EV that has sufficient quantity of units "in the wild" you would be able to find support and advice about it from enthusiasts.
There are ready-to-go conversion kits from Luna Cycle shop based on the BBSHD e-bike unit. Wrecked Zero motorcycles often have a fully operable powertrain that can be salvaged as the frame cracked or some other disqualifying reason the bike was totaled out ; however you then depend on authorized dealers since there are secret sauce programming codes for the Zero motorcycle powertrain no one but dealers can interact with.
Looking for something complete? Expand your search to include: Sur Ron X, KTM Freeride e-XC, Cake Kalk OR, Sur Ron Storm (delayed to 2022/2023), Alta Motors Redshift MX (out of production / defunct manufacturer).