GoldenMotor.com Forum

Have you seen this:
https://www.reddit.com/r/ebikes/comments/ucjgnr/diy_torque_arm/

A spanner can make a crude but effective torque arm when secured properly, unfortunately the one in that photo would not be very effective if regen were used, as the axle would simply twist the spanner away from the bolt being used as a stop.

Of all the torque arms I have seen, I think these are the best torque arms currently available for hubmotors with 14mm solid axles:



Click on the above picture, or watch the excellent video here for further information.

However, with a price tag of $55 (USD) this quality item isn't cheap.

Alan
 

Elmer,
What you have proposed is basically a locking tab/plate for the axle nut, but this will not directly resist any torque from the axle itself.

A torque arm is used to resist axle movement by acting directly upon the flats of the axle and preventing it from rotating in either direction (under power and under regen).

Simply locking the axle nuts in relation to the dropouts is unlikely to prevent rotational movement of the axle itself, and therefore should not be used instead of suitable torque arms.
I don't see a problem with using your nut locking tabs/plates in addition to torque arms if you are concerned about the axle nuts working loose over time.

If the axle nuts were able to be torqued up tight enough to prevent the axle from rotating (without stripping the threads), the nuts should not require locking tabs as they could not work loose over time if there was no rotational movement of the axle.

Alan
 

I purchased the items listed below (plus contactor and cooling system) for an electric conversion of an off road go kart buggy. I have these setup with two 48v liFePo4 batteries, each battery is 32AH and vendor specifies that a single battery can output 200A for 10s and 120A continuously. The go karts top speed is great at about 27 mph but the acceleration is slower than I'd hoped. It seems to take quite a while for the controller to increase the amperage up to the maximum 250A setting limit. Even in sport throttle mode, it doesn't seem to increase the acceleration amperage up to 250a for quite a while.
Are there other controller settings I can adjust to increase the acceleration?
Thank you

EZkontrol 48 Volt Universal BLDC Motor Controller 500 Amps (3-5 KW)
5 KW BLDC Motor Air Cooled 48 Volts

Hello, just wondering if there has been any progress on getting documentation on the EZKontrol controller programming instructions. I replaced my vec-500 with an EZ48/1200 and am having difficulty figuring out the programming. Aside from self learning mode, is there a doc that can be followed to match the golden motor HPM series 10Kw motor? My motor is turning but not smoothly.

Hi, mu Magic Pie 5 was working great for 3 years but I recently connected it to the pc and turned on brake regen. Now it’s stuck on a legal setting of 25km/h any ideas how to reset it?