Recent content by tmstacks

I recently got a brand new MAC motor. I installed it on my bike, and instead of working properly, it makes a horrible screeching noise and does not spin. I can coax it to spin by giving the tire a little resistance with my hand while the bike is on a stand. But when it goes it sounds awful, has...

"...I am not quite happy yet and I am planning to buy and aluminum U shape profile to make and enclosement and somewhow cut it and merge it with the handlebar to make it even mor tiny Another big problem I have its that I cannot see the voltmeter due to sun glare in direct sun light Any idea...

This is the schematic I drew up for what I'm trying to do. I'd like to run 10s the majority of the time, and 15s occasionally. When I hooked this up on the test bench, I got a big spark and a melted connector. Not sure where I went wrong...

My thinking is 37v for the weekday commute, and 55.5v for weekend fun. But I have to lug this thing up and down 3 flights of stairs, so less weight during the week when I don't need the extra speed is what I'm aiming for. I have a harness for 10S2P. I'd like to splice in the 5S2P, but not sure...

Can it be done without a BMS?

I'm currently running 10S2P Lipo (37v,10Ah). I bought two more of the same Lipo's with the idea of making a removable booster pack. I would like to parallel the two together, then run them in series with my current pack to give me 15s2P (55.5v, 10Ah). Does it work like this? Does 10S2P + 5S2P =...

Solved! One of the small contact pins inside the throttle connector was bent and therefore not making contact. Straightened it out and it works. Thanks for the input!

Hello everybody, my first post but I've learned a lot from you guys lurking the last couple months. Just put together my first build. I got the MAC kit from EM3EV. Hooked everything up, turned on the power switch and nothing. Checked the voltage from the wiring harness and was 42v (10s Lipo)...