Magic PIE with loud rubbing noise, vibration and burning smell

[jon]

Coming down hill under regen braking my motor suddenly emitted a loud rumbling, rubbing sound with lots of vibration and no power.
It smells like something electrical failed, and it is hard to turn the wheel (26" mounted on my mountain bike).
Anyone seen this?
I contacted Golden motor a week ago but no response at all.
help
-jon

[DirtyGinge]

quite often it seems, most probably that your internal controller is smoked....it take it that you have an internal controller

usually when they fail, regen is somewhat to blame

[o00scorpion00o]

Yep I bet the internal controller is toast!

But fear not, just open the motor rip out the controller and wire it up for a powerful controller such as an Infineon.

@ 60 volts it will do around 30 mph, go for 72 volts and 40 amp controller and you got yourself a 3kw, 3.5 peak beast and you will never want to get off your bike again! 

Get yourself a battery capable of 40 -50 amps continuous if you can afford it, otherwise there is no point in spending money on an upgrade.

If spending money on an upgrade is not an option then get another internal controller and never set the regen to more than 50%! 30-40% for internal controller is better!

The pie is a seriously good motor if given voltage and amps! 

Look around the forum in the pie mods section and you will find lots of information!

[DirtyGinge]

hey mark, what average a/h  per mile do you get at the higher voltages..??


p.s. pie works sweet on my lyens version 2 sensorless controllers....no hall sensor problems for me, and start from stop too

[o00scorpion00o]

hey mark, what average a/h  per mile do you get at the higher voltages..??


p.s. pie works sweet on my lyens version 2 sensorless controllers....no hall sensor problems for me, and start from stop too

Hi ginge,

I get around 48wh/mile full throttle with the pie on 60 volts at 30 ish mph.

I would like to turn up the controller more but it won't program any more!

On lyen's site it says his sensor less controller will only go to 72 volts and has no regen?