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Unread 11-25-2014, 04:53 PM   #11
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Default Re: faster in reverse than foward ????

OK. Not likely related, but drawing 12 volts from only two of the batteries in a pack like this gets the pack "unbalanced." The charger will then undercharge the batteries being drawn from and overcharge the others, causing shortened lifespan. A 36 to 12 volt reducer is a safe way to draw from the whole pack evenly for your accessories. I noticed the middle two batteries are newer, and those are what the accessories run off of - the old ones probably died due to the uneven draw.

As for your problem - reverse on this particular cart is powered by that green wire going to the FNR switch. It provides 18 volts from the pack for half speed reverse, yours appears to have been jumped up for 24 volt reverse, which is fine. I usually hook em up for all 36 unless kids (or irresponsible adults lol) are involved. Since reverse seems OK, the remaining two batteries from the pack that are used for forward motion are likely suspect - these would be the two on the passenger side. With a voltmeter, you can test the batteries under load, hook it up to the whole pack (alligator leads or tape) and then each battery and note the voltages of each while driving.
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Unread 11-26-2014, 07:28 AM   #12
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Default Re: faster in reverse than foward ????

That makes sense. So even if the two other batteries are low it would make the cart that slow ?? It is a real noticable difference when shifted from reverse to foward..
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Unread 11-26-2014, 07:46 AM   #13
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Default Re: faster in reverse than foward ????

Quote:
Originally Posted by Sergio View Post
Is the FNR Lever pointing towards "F" when You are going forward?

If it is not, You may have the 2 wires that go back to the motor reversed, the ones we can see in the picture look right.

I just posted some pictures on a different thread a few days ago, check the A1 and S1 wires back to the motor.

1986 FNR wiring
FASTROADRUNNER.....Did you compare your wire "runs" (for lack of better words) to those that Sergio (Is Sergio an Italian cart love-making machine kind of guy that women swoon to?...Oh...that's another post) had posted his link to??

Dave
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Unread 11-26-2014, 08:39 AM   #14
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Default Re: faster in reverse than foward ????

Hey I like your version of me better
93yellowclubcar makes a good point, specially if the different batteries in the middle are newer than the trojans.
Yes, a single battery with high internal resistance in the current path will limit the current in the entire pack.
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Unread 11-26-2014, 01:07 PM   #15
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Default Re: faster in reverse than foward ????

Thanks , guy's. I checked the wires going back to the motor andthey don't look as if they have ever been changed.. Maybe it's time to invest in a couple of more batteries. I need a few new cables also..
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Unread 11-26-2014, 01:18 PM   #16
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Default Re: faster in reverse than foward ????

You DO know that replacing "a couple batteries" is just a band-aid right? You'll be replacing a couple batteries every year or two forever; 'cause old batteries mixed with new batteries just end up degrading each other - and shorten the life of all six by quite a bit (for certain, less than half the normal lifespan for the new ones).

Its fine for the short term or, if you just want to show that it runs OK, while selling the cart. BUt if you plan on keeping it, replacing "a couple" batteries usually ends up more expensive in the long haul.
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Unread 11-26-2014, 02:23 PM   #17
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Default Re: faster in reverse than foward ????

I agree 100% but with the price of new batteries. one at a time is all I can do.. LOL
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