View Single Post
Old 11-13-2018, 09:15 AM   #9
BobBoyce
Gone Insane
E-Z-GO
 
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
Default Re: UPDATE-(THANKS TO BOB BOYCE...)New 72 volt L6...NO LONGER SLOW....

Quote:
Originally Posted by EZGO1717 View Post
So there is no way to increase the speed slightly with the handheld?
It depends upon how the L6 was set when it came from the factory. If it was already set to the maximum from the factory for the way the profiles are selected, then no. If you go in there and try changing profiles, you could very well mess up the twin modes, Rabbit and Turtle. It also depends upon which year and controller version the L6 was delivered with. The earlier L6 only had mode 1 (Rabbit) defined with a VCL, and the other setting (Turtle) was a subset within mode 1. If you tried to switch to mode 2, it had no VCL at all defined and there was no regen braking available in mode 2. In other words, mode 2 was useless. Wthout regen braking, operation was very unsafe at higher speeds. The drum brakes alone are only adequate for speeds of 12 MPH and below, and it's even a bit scary at the top end of that...

The newer L6 controller came from the factory with both mode 1 and mode 2 defined with VCLs that allow independent configurations, with regen braking supported in both. Those controllers also have a new OS that is not compatible with older programming systems. Those must be unlocked with a laptop or computer with the newer software and a different interface. Once unlocked and the top level (Development and Factory) limits are addressed, you can then use a high level handset to fine tune the lower level parameters to the owners liking. Then we save the files and relock the controller.

These are very complex controllers, and it is so easy to royally stuff up the operation of the L6 by making changes without knowing what you are doing. If anyone goes in and messes up one of these, they are on their own. I will not attempt to recover one that has had this done because I don't have a way to reset it back to factory original to uncorrupt it, before starting over.

I should add. Changing rear end gears to speed up one of these 72V carts should NEVER be done... That changes the controllers motor current/RPM mapping, causing the motor to draw much more current than it was designed for. The maps in the controller will not match what the motor requires anymore. The end result will be premature failure of the controller and motor from overheat. The controllers in these carts are not bolted to a proper heat sink for higher current draw. They are just mounted to a flat mounting plate.

Bob
BobBoyce is offline   Reply With Quote