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Old 04-12-2012, 08:09 AM   #1
Al B
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Default clicking sound on accelerate

I’m posting a problem that I am currently having with my 95 electric ezgo. The problem I’m experiencing is that a after running the cart for a few minutes it starts to lose power and makes a clicking sound. Once you stop rolling if you press the accelerate the motor clicking continues and the cart doesn’t move. If you put it in reverse the cart will run fine. It almost feel like the gears are slipping. Any thoughts
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Old 04-12-2012, 08:29 AM   #2
scottyb
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Default Re: clicking sound on accelerate

That is a low voltage problem. the sound you hear is the solenoid clicking in and out because there is not enough voltage to hold it in.

Continued clicking will damage the solenoid contacts.

Check your batteries.
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Old 04-12-2012, 08:44 AM   #3
Al B
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Default Re: clicking sound on accelerate

Thank you for the answer. But why dose it go in reverse ?
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Old 04-12-2012, 08:50 AM   #4
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Default Re: clicking sound on accelerate

If it is a series cart you may have a contact problem in the F&R.... creating a similar low voltage situation, anything else you forgot to mention?
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Old 04-12-2012, 08:55 AM   #5
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Default Re: clicking sound on accelerate

You indicated the cart starts out fine but quickly looses power..... this is almost always a battery problem?
Connect a DMM to the pack and run the cart if you can, let us know the starting voltage and what it drops to as the cart slows and clicks.

If there is no significant (5v+) drop then the problem could be a bad connection..... if it's limited to one direction it is likely in the F&R switch.
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Old 04-12-2012, 10:41 AM   #6
simple man
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Default Re: clicking sound on accelerate

A series cart will run in reverse with batteries to weak to move the cart in forward. I'm not sure of the reason for this ( maybe the brush timing ). I was told it is so you can move the cart out of the way if it dies. I don't know about that one, though.
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Old 04-12-2012, 10:57 AM   #7
Al B
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Default Re: clicking sound on accelerate

Thanks I will work on it over the weekend
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Old 04-12-2012, 03:52 PM   #8
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Default Re: clicking sound on accelerate

Quote:
Originally Posted by simple man View Post
A series cart will run in reverse with batteries to weak to move the cart in forward. I'm not sure of the reason for this ( maybe the brush timing ). I was told it is so you can move the cart out of the way if it dies. I don't know about that one, though.
Not meaning to question you, but I'm not sure the motor cares which direction it goes. As long as it has enough juice to run it one way, I'd think it would run the other, but I'm just speculating.
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Old 04-13-2012, 09:22 AM   #9
JohnnieB
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Default Re: clicking sound on accelerate

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Originally Posted by yurtle View Post
Not meaning to question you, but I'm not sure the motor cares which direction it goes. As long as it has enough juice to run it one way, I'd think it would run the other, but I'm just speculating.
I'm just speculating also, but it might make a difference if the current flow through the stator and armature were "In Phase" or "Out of Phase" since it is PWM or pulsating DC.
I seem to remember there was an optimal phase relationship when running series wound motors on AC, but I might be wrong.

Also, some carts have 1/2 speed reverse, so the lower current draw might make a difference in how long almost dead batteries will turn motor. (Peukert Effect)

Personally, I think I'll just accept this phenomenon as a truism the same way aeronautical engineers accept the fact Bumble Bees can fly even though it can be proven mathematically, that they can't.
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Old 04-13-2012, 03:22 PM   #10
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Default Re: clicking sound on accelerate

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Originally Posted by JohnnieB View Post
Personally, I think I'll just accept this phenomenon as a truism the same way aeronautical engineers accept the fact Bumble Bees can fly even though it can be proven mathematically, that they can't.
I think I read that through high speed video, they were able to determine that the way the bee flaps his wings is different than anyone had envisioned, so now the math works and the bee CAN fly.
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