I noticed a bike at a local thrift shop with what appeared to be a hub motor in the front wheel. A quick glance and I concluded that it was missing the battery and esc, but motor throttle and brakes with electrical sensors were there. It was also a foldable aluminium frame in excellent, although dirty, condition. Imagine my surprise when I saw it was priced at approx 6$! I have no idea if it works, but I figure the sadle alone was worth that, so I bought it.
Some more images, will take better ones in the following days as I clean it, measure and label the wires:
https://imgur.com/a/Th9pClM
It appears homebuilt, but missing battery and esc. I have been salvaging 18650 cells from laptops for a while, intending to build an electric longboard, but do not have enough yet.
It has a three phase motor, with threelarger wires for power and the standard 5 wires for hall sensors. There are wires coming from the handlebar brakes that are connected to eachother, presumably for regenerative braking. There is a twist-throttle with several wires, a red toggle switch, and an unwired black push-hold switch.
I am currently contemplating buying a battery and esc for it, but am not sure if the motor runs or the specs of it.
A) How do I find out the specs of a completely unlabelled motor? I have gone over it in detail and not found even a serialno.
B) How can I determine if the motor runs without investment? I have some lab powersupplies that, although not powerful enough to run at full speed, should be able to veryify that it moves at all perhaps? I assume I will need at least some sort of ESC too hook up to my lab bench psu. Should I just guess the motor being rated at 250W and get like a 36V 10A ESC? Would it be a better idea to get a 48V 20A ESC and just run it at 10% throttle to test with?
What is the best way to approach this mystery bike?
Some more images, will take better ones in the following days as I clean it, measure and label the wires:
https://imgur.com/a/Th9pClM
It appears homebuilt, but missing battery and esc. I have been salvaging 18650 cells from laptops for a while, intending to build an electric longboard, but do not have enough yet.
It has a three phase motor, with threelarger wires for power and the standard 5 wires for hall sensors. There are wires coming from the handlebar brakes that are connected to eachother, presumably for regenerative braking. There is a twist-throttle with several wires, a red toggle switch, and an unwired black push-hold switch.
I am currently contemplating buying a battery and esc for it, but am not sure if the motor runs or the specs of it.
A) How do I find out the specs of a completely unlabelled motor? I have gone over it in detail and not found even a serialno.
B) How can I determine if the motor runs without investment? I have some lab powersupplies that, although not powerful enough to run at full speed, should be able to veryify that it moves at all perhaps? I assume I will need at least some sort of ESC too hook up to my lab bench psu. Should I just guess the motor being rated at 250W and get like a 36V 10A ESC? Would it be a better idea to get a 48V 20A ESC and just run it at 10% throttle to test with?
What is the best way to approach this mystery bike?