Faulty speed controller ???

[LukeL]

And does it decrease towards 0 as you let up on the pedal smoothly?


Club Car DS driver’s club #59

[sicrx69]

Smoothly? No not really, it never goes back to 0, it seems to start or rest at 2.2 or about.
Picture is at rest, pedal untouched.

I have the DVM on the black and white wire coming from the potentiometer.

Took a short video and uploaded if you care to look. If not cool too.

https://www.youtube.com/watch?v=q655UR5I8jE

I basically as slow as i can depress the accelerator then release it. It doesn't seem smooth to me as far as the readings.

Thanks again for any input.

[sicrx69]

OK, So I removed the potentiometers to clean and inspect it a little closer. (attached are photos) I notice when I swing the arm(acting as the accelerator) the resistance in creases pretty consistently but does not stop at 5k ohms as recommended on the net. The rod coming from the accelerator has an adjustment on it along with different holes on the arm of the potentiometer. If i was to adjust it, to stop at 5k ohms would that possible solve the issue?

There is also a spring on the adjustment arm that didn't seem to be attached to anything to cause the arm to spring back(if that makes sense)(thrid photo, holding the spring). Not sure if that was needed. The accelerator seemed to spring back and function properly.
Thanks again,
John

[JohnnieB]

If the resistance goes too much above 5kΩ, the controller will think the pot is open and shut down. (Safety feature)

[sicrx69]

Ya I read a few things that other people had an issue with their cart completely stopping when they push the pedal to the floor.

Mine never actually had that issue. When I use my DVM and move the rod around, it maxes out at 6.76 then just stays at that resistance even if i continue to twist the rod.

[sicrx69]

Moving the potentiometer by hand without throttle arm hooked up doesn't appear to help my problem. I gave it a shot but no change in wheel speed.

What does that micro switch do that is mounted on the potentiometer. When the arm from the throttle is at rest, it kinda sits against it but doesn't appear to ever engage it. It has a blue wire on it that attaches to the number 1 pin on the speed controller.

When I press throttle and let it come back to resting it spot, the micro switch never actually is engaged, the arm doesn't appear to come back far enough. I switched direction switch to forward and reverse and push throttle but nothing ever seems to engage that micro switch.

Thanks again,
John

[WalterM6]

A good place to start would be to replace the high current wiring and connectors.

[LukeL]

That microswitch engages the solenoid when the pedal is first pressed.


Club Car DS driver’s club #59

[sicrx69]

Originally Posted by WalterM6

A good place to start would be to replace the high current wiring and connectors.

Sorry, which wires do you mean?

And maybe the solenoid is engaged before I push pedal, because even when I pull pedal back further then the resting spot, the micro switch is not activated. Sounds like it should be, I can pull the lever back a bit on the linkage and engage it but it does not seemed to be activated by itself when I release pedal.
Thanks again
John

[Raystar57]

That spring is a preload of the actuator arm so it sits on the stop at the micro switch.
It could be broken or just not installed correctly.

You can see in your pics where the spring has been riding on the stop.
Orange arrow. The micro switch adjustment nut is at red arrow.
Attached is an example unit, not like yours but close.

Inspect the arm where it mounts on the shaft. Not sure if it is splined or not.
It could have wore out or slipped.

To set it loosen the arm clamp nut and take off arm.
Insure spring hook is in place on the bar and set long part in it's seating area on the stop.
Rotate clockwise to load spring and push arm down onto the shaft.
Now if it looks good and pulls the arm to the stop at the switch then adjust the shaft zero set.
Rotating the shaft counter clockwise with screwdriver until it stops and then lock the nut.
Operate the arm through the normal travel range and insure the spring does not come out of the stop.
It should read zero ohms at the stop and max resistance at full travel.

I think you are correct on the shaft adjustment to achieve the top end resistance limit.

Also adjust the micro switch so that it disengages while the bar is on the stop.