48v on bafang motor over long distance, any problems?

[dazzassj6]

hey guys i wanan overvolt my 250w bafang to 48v. im going to use a 48v controller, however i dont know what amp i should use for it. Can anyone help me?

first off, i know that @ 60v 20amp over a long distance (15-20km) would heat up the motor significantly and fry it if you push it further going up the hills and stuff.

But what about 48v @ 15amp or 48v @ 20amp? would it heat the motor up significantly? or would i be likely to fry it if i go like 30km on WOT up and down hills?

Has anyone tried using 48v on the bafang SWXB and had successful over a long time without having any issues like heat dissipation and gear stripping(unlikely @ 48v)?


thanks in advance!

 

[docnjoj]

I've been using 48 volts on my rebuilt Bafang rear motor to carry me and the trike @300 or so pounds for about 2 months now. I replaced the "peanut buttered" original nylon gears with 1 steel and 2 nylon and have had no problems with the motor. We average about 50 miles per week riding, and I still need to attach my Whattmeter to check current draw, but it used to be between 25-30 wh/hrs/mile with only the nylon gears. They lasted only 200 miles or so. all our riding is fairly smooth roads and city streets.
otherDoc

 

[gedemeisterdk]

Hi


I have run the bafang 30 km several times at 48v (ping ~55v), with a 14 amp controller.
No problems sofar. Total load 135 kg. And the nylon gears are still holding up.

 

[dogman dan]

The higher the amps, the more wattage, and the more heat, especially when run non stop for a long distance. So I'd go real low on amps if the distance was real long. I have no Idea what the right number would be though. 48v at 10 amps is still a pretty healthy wattage, 960. I took a 24v heinzmann used to a 24v 12 amp controller, and ran it on a 36v 35 amp controller,,.,,, for a half hour.

 

[dazzassj6]

hm i have decided to stuff this idea of running 48v on a bafang, it would only give me around 30-35km/h. Which is not worth it. So i got myself a 48v 500w Golden motor because it would be me around 40-45km/h. If i am wrong please correct me on that speed.

 

[recumbent]

If the Golden motor is a direct drive, then you should get over 40 km/h no problem with 48 volts.

Is your Cyclone motor not moving you fast enough?

 

[dazzassj6]

If the Golden motor is a direct drive, then you should get over 40 km/h no problem with 48 volts.

Is your Cyclone motor not moving you fast enough?

my cyclone kit is collecting dust for 1 year now, so is that dodgy battery with no BMS. I cant really sell it, because i cant get the pedals and axle off, but dont worry about that. I dont want to know it.


Yeh before i had, a bafang @ 60v, got about 44km/h on flat, but had too many issues with it, like overheat and burnt motor and fried batteries etc.

thanks for the advice guys.

Will make another thread when i install the GM kit and when i get the new 48v10ah ping battery. cant wait!