Need help setting up 10kw motor and ezkontrol controller for electric buggy

[Campbell3d]

I'm in the process of building an electric buggy. I recently purchased an 120v 10kw liquid cooled motor and the matching 120v ezkontrol controller. My battery setup is only going to be 96v with capability of 200 continuous amps with a max of 400amps.

First question, since I'm only using a 96v battery, should I update my controller with a 96v firmware file for optimal performance or leave it alone and just manually set the battery parameters?

Second question, I have everything connected and have tested the motor/controller. I have also ran the self learn. I'm not happy with the throttle settings. It's pretty much all or nothing. The throttle can be at 50-75% but the RPMs have already reached the max (around 3500rpms), which honestly feels low for my setup. I was expecting this thing to scream. I haven't changed any of the settings because I'd like to learn what each does first. I have searched everywhere for a programming guide from Golden Motors about what the parameters do but can't find one. Does anyone have a copy of the guide? If not, I would appreciate any help or reference, so I can dial this thing in.

Thanks!

[Bikemad]

Hi andto the forum.

Unfortunately, I have no experience with the EZKontrollers so I don't know what benefit you would see by changing the firmware. If the 96V firmware is specifically tailored for the 96V motor, it might even make things worse. 
I would try setting the battery parameters to suit your battery and then see how it performs.

The "all or nothing" throttle response is usually because the controller is using torque control instead of speed control and when there is insufficient load being applied to the motor shaft.

I haven't seen any rpm figures for the 120V 10kW motor but I would expect it to be similar to the 96V motor (~4130rpm) if you were running it on the expected 120V battery.
As you are only using a 96V battery, I would have expected the maximum speed to be ~3300 rpm (you may only achieve 80% of its rated speed if you're running it on 80% of its rated voltage) so your 3500 rpm is actually higher than I would have expected.

As the 96V motor develops it maximum power at 3611.9rpm, I would expect the maximum power from the 120V motor to be achieved at a similar rpm on a 120V battery, but this might also be reduced to ~2890rpm when running it on a 96V battery.
This means that your gearing on your buggy will need to be high enough to achieve your maximum speed at this lower rpm.

Alan
 

[Campbell3d]

You're awesome Alan. Thanks for your help. I currently haven't tested with a load, so that might be a cause. If memory serves, I believe it is setup for torque control. I'll adjust those settings and see if that helps.

Wish there were more resources on all the parameters of the controller. I reached out to golden motor support, but they never responded. I take it, there isn't a true programming guide that exists. These are expensive motors and controllers to not have any additional reference material.

Justin