RXV golf cart

[kernal]

GR 16.99:1 18"tall tires

From the EZGO web site.

[Yamahaman]

The tag on the lower steering shaft down on the floor board is scuffed and unreadable.I guess golfers with spikes distorted it idk.
I have this kind of switch.



This for a amp meter.

[jjordan615]

Nice looking RXV.

[trexhunter]

I have a similar RXV with the same type of issue on the drive shaft sticker - had to pull the serial # off the inside of the drivers side frame and it was tough to read there as well, but manageable. It blows my mind that they put stickers rather than stamp the number on the frame or put a plate.

[Yamahaman]

A plate would be nice or at least put the darn sticker up higher on the steering column.If those golfers want to scratch at it at least make them work for it.

[dougs_huntingcart]

Originally Posted by cgtech

if you install high speed gears on the curtis one, it will do a weird "rollback" when you come to a stop. i have not figured out how to get it just right, not a big deal for me as i only did gears in one curtis model. keep your batteries & surrounding wires squeaky clean or acid will get in the harness and you will be sad.

This is EXACTLY what I experience when coming to a stop with my new upgraded curtis 350A controller (from the Dahner) I did not install any new gears but my cart will oddly come to an abrupt stop and roll back. Scares the crap out of passengers. Never did it before I upgraded and have been seeking a solution.

[dougs_huntingcart]

Originally Posted by mjroman20

Ok, now that I'm back from traveling I had a chance to look at one of these Curtis 1206ACs a bit more closely. The handset I have does allow those values to be adjusted. Kp, Ki HS, and Ki LS. They are adjustable as a percentage 0~100%. Alas I do not have a 'control' manual so no information on what effect each one has exactly but the curtis 123X control manual describes it as follows:

Kp
Determines how aggressively the speed controller attempts to limit the
speed of the motor to Max Speed. Larger values provide tighter control.
If Kp is set too high, you may experience oscillations as the controller
tries to control speed. Setting Kp too low may result in a top speed much
higher than Max Speed.

Ki
The integral term (Ki) forces zero steady state error, so the motor speed
will be limited to Max Speed. Larger values provide faster control.
If the gain is set too high, you may experience oscillations as the
controller tries to limit speed. If it is set too low, it may take a long time for the motor to approach Max Speed from overspeed.
Always start your speed limiter tuning by setting Ki = 0 and adjusting
only the Kp terms and Current at Speed.

I don't imagine the effects between each of the controls will be too different.

If you aren't seeing these perhaps your RPM to Speed value could be adjusted to correct the issue. Again I am referencing the 123X control manual for this
KPH to RPM: (G/d)*530.5, where G = gear ratio, d = tire diameter [cm].
MPH to RPM: (G/d)*336.1, where G = gear ratio, d = tire diameter [in].

The default value here looks to be 331, which I estimate would be something close to a 12:1 GR with 13" tires. Can anyone confirm stock vehicle tire size and GR?

So these settings can or cannot be accessed? This is exactly what I experience when travelling uphill and when going down hill the brake will just grab and then release like it's guarding against the run-away cart deal. But won't do it if I am barely resting my foot on the accelerator.