Puch newport 2 build

[mr.woodscrewsnbondo]

Been working on it for 3 weeks now in my spare time.
Its a 1980 puch moped. Got a 3000w motor kit from amazon. Was going to go with a 72v lifepo4 battery but it was way too big to fit, and the controller that came with the motor sucked. Throttle went from slow to full blast with no smoothness so i put a 2000w controller I had laying around on it with the 52v shark pack i had on my e trike.

 

[mr.woodscrewsnbondo]

Ya the kick stand bracket is a little crooked but it works

 

[mr.woodscrewsnbondo]

Before

 

[mr.woodscrewsnbondo]

Was wobbly around 25-30 so i got new wheels, front fork, and a smaller rear sprocket. Turns out the tire was warped so i got new tires too.

 

[mr.woodscrewsnbondo]

i would like to upgrade to more volts. The current battery is 52v 24ah looking at a 60v 17ah and a 72v 13 ah. How would that work out in mileage? It should workout to about the same mileage maybe a little less because the motor will pull less amps at higher voltage and motor shouldn't get as hot right?

 

[j bjork]

Not really, at the same speed the phase amps (and voltage) to the motor will be the same so it will heat the same.
If it is powerful enough it will be faster though (as in higher top speed).

But if you change gearing to the same top speed as before it might heat less, depending on if the iron or copper losses is dominant. It will also have more torque on the rear wheel in that case.

 

[SlowCo]

Nice project!
The Vesc/Flipsky 75100 controller might be a good upgrade for this motor. If you get that dialed in correctly to the motor it might cause less heating of the motor. And as mentioned by j bjork above getting the volts and rpm's up but gearing the moped down helps as well.

Vesc/Flipsky 75100 controller