If your motor isn't wound for a faster speed than that Cromotor, you won't get quite as fast a top speed as you want, unless you increase the system voltage (different battery, different controller). Using about 2kw motor power, about 2300w battery power (300w wasted as heat in the system between battery and road). This simulation with a 'cromotor' (similar to some of the QSmotors, don't know if it's similar 'winding speed' to the one you're getting, so don't know if it's an accurate comparison) and 72v battery 50/100A controller, 22' wheel (should be similar outer diameter to your 16' MC wheel's tires), etc., gives about 38mph top speed. That might mean as little as 3000w or less, continous. Controllers are not completely efficient, so you would get less than that at the motor. Not knowing that controller, I'd guess continous battery would be 50A or less if so the system wattage would be 72v * 50A = 3600w. The actual battery current (and thus 'system wattage') will be less by whatever factor that controller is setup for-if it's programmable, then you can change it within whatever range they've allowed. Of 350A peak and 100A continuous is motor phase current. So what do ya think, sound like a reasonable plan? So far theįrame and all look as good, as the engine was bad. In the meantime I’m rebuilding and preparing the frame, forks, front wheel and drum brake. Them I planned to run it with a 72V battery. So… I’ve ordered (from qs-motors) a 16”4000W hub motor kit with KLS7245N as a controller and I told Also re-gen braking is easy which I would like to take advantage of, Unsprung weight, this is certainly not a performance build, and the old drum brake rear wheel on it To start me down a path and reduce some of the variables and help bring in to focus the rest of it.įirst is I plan go with a rear hub motor for the added simplicity in a first build. I realize there are a lot a variables (and different ways to do a similar thing). Like, it’s small so that will feel plenty fast, I think I’d be scared on it at 75mph! Speeds would be mostly 35-40 and 50mph max top speed would be fine, more-fast scooter It’s purpose (besides pure fun!) would be an in-town commuter and errand runner, so big trips would beĢ0ish miles. The frame looks perfect forĭyi structural support and mounting bracket where the engine was attached. With the battery I’d like to do something fun, like keeping with the era and go for a 50’s space age lookĪnd perhaps house it in a tube or, multiple cylinders where the engine was. Hopefully that won’t be too big of a deal as long as I get the lights and horn working. It’s got a VIN and was originally registered for the road so I love the classic styling and want to try to put, mostly everything back as it was (no fender chopping )Īnd plan to register it for legal road use.

Honda ca95 forum