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Unread 02-23-2010, 10:35 PM   #11
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Default Re: Just noticed something else

Yes you said "cleaned", BUT You should of added the "repaired or fixed" it usually follows "Cleaned" in the next breath. Or in some cases a drink!! And I did notice you're short another beer............so I'm waiting!!


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Unread 05-19-2010, 12:20 AM   #12
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Ok ..Have an update. I finally got back home and the rear end is what was grumbling. Just so happened I had purchased a rear with high speed gears in it (8:1). Put a set of 2 yr old 8v batteries in it. Went from 17 mph on flats to a tad over 24 with 18 inch tires...BUT... I have NO torque at all. Won`t even pull over a 2x4 put behind the rear tire. It starts out real slow and then at about 4 MPH it will really take off..... Now to tell the whole story. As I was installing the new rear I also added a 6" lift kit and 22" tires. 36 volt motor running on 48 volts, this set up should of got me close to 32 MPH according to the speed calculator. The best I could do was 24 and barely 25 on a slight down grade. Again with little torque. So I was curious and switched back to the stock 18" tires just to get a base line with just the 8:1 rear. I was only 1 MPH slower than with 22" tires. I had put a 2x4 behind the cart to keep it from rolling as I changed the front tires (just a tad easier at the time than setting the parking brake). Went to back up and it wouldn`t pull over the 2x4. Had to get a running backup of about 6" to get over it. I have 2 gauge wires on the batteries. I had a set ready and am making a set for the rest of the cart ( motor and controller) using 4 awg wire. Any ideas as to why the torque is so low? I know the 8:1 rear takes a bit of torque away , BUT that much? How much can I expect to gain with 4awg wires? What type of controller comes with a stock 96 CC? That will be my next up grade. I think by looking I have a mocor setup.

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Unread 05-19-2010, 01:07 AM   #13
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Default Re: Just noticed something else

Why would you use 2AWG for the batteries and then down size to a 4AWG goin to the motor?

I'm a newbie but to me that doesn't make much sense, why wouldn't you run the 2AWG throughout?
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Unread 05-19-2010, 08:23 AM   #14
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Default Re: Just noticed something else

2 ga. cable is overkill on all but the biggest builds. 4 ga. works just fine on everything under 500amps..... the stock controller here is what is giving the disappointing performance.
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Unread 05-19-2010, 10:37 AM   #15
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Default Re: Just noticed something else

Unless I missed it some where in your posts "Have you checked the oil in differential" It sounds like you may be low on oil because of a leak OR an over fiilled differential that is causing "Rear has oil coating"
I am a large person ( but when able to get down on ground ) I am able to check differential oil with a simple wrench. It should be full to bottom of upper fill-check plug. This amounts to about 22 Oz of 30 weight motor oil. If in doubt I would remove lower DRAIN PLUG and see if you have any metal flakes in oil showing that you have major problem, and then refill with new 30 weight oil.
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Unread 05-19-2010, 11:58 AM   #16
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Default Re: Just noticed something else

Quote:
Originally Posted by scottyb View Post
2 ga. cable is overkill on all but the biggest builds. 4 ga. works just fine on everything under 500amps..... the stock controller here is what is giving the disappointing performance.
I agree on the overkill on the 2ga. BUT as I stated, I already had a set made up for use on my Commutta Car, that I didn`t need. I was afraid it might be the stock controller. What size would you suggest for my setup? I`m 90% on flat ground or road. What would be the minimum I would need?
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Unread 05-19-2010, 12:02 PM   #17
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Default Re: Just noticed something else

Quote:
Originally Posted by OLD MEC View Post
Unless I missed it some where in your posts "Have you checked the oil in differential" It sounds like you may be low on oil because of a leak OR an over fiilled differential that is causing "Rear has oil coating"
I am a large person ( but when able to get down on ground ) I am able to check differential oil with a simple wrench. It should be full to bottom of upper fill-check plug. This amounts to about 22 Oz of 30 weight motor oil. If in doubt I would remove lower DRAIN PLUG and see if you have any metal flakes in oil showing that you have major problem, and then refill with new 30 weight oil.
The "oil coated rear" is one that was bad and I replaced it with a new rear with 8:1 gearing. I`m not a small person either, But getting a bit smaller due to a gastric bypass operation.

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Unread 05-19-2010, 02:43 PM   #18
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Default Re: Just noticed something else

CARTTRADER Good luck with your gastric bypass most are having good luck with them, but I found that I was able to drop 135 lbs by pushing back from the table over a 2 year period? Been heavy since 6 years old and now at 77 I am lighter than I have been since age 12 when I weight 240.
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Unread 05-20-2010, 05:38 PM   #19
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Default Re: Just noticed something else

Any ideas on what size controller? Also which is better a Curtis or an Alltrax? And why is one better than the other. Thanks


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