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07-12-2016, 03:58 PM | #31 |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
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07-12-2016, 04:34 PM | #32 |
Guest
Posts: n/a
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Re: Wiring to eliminate reverse
thats a johnnieb question
my guess you need 58AH for one hour of run time at 25 amps so maybe 15 min ??? help johnnie |
07-12-2016, 04:40 PM | #33 |
Gone Wild
Join Date: Apr 2016
Location: Greenwood, SC
Posts: 1,291
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Re: Wiring to eliminate reverse
Seems like a lot of work for a 15 minute ride or whatever?
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07-12-2016, 04:42 PM | #34 |
Gone Wild
Join Date: Apr 2016
Location: Greenwood, SC
Posts: 1,291
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Re: Wiring to eliminate reverse
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07-12-2016, 05:33 PM | #35 |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
It's just a project to keep busy. I don't want to go spend hundreds of dollars on batteries. I picked all these up for a good price and figured whatever they can do will be fine. I'll be disappointed with 15 min, but at the end of the day, it's just for fun.
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07-12-2016, 07:54 PM | #36 |
Gone Wild
Join Date: Sep 2015
Posts: 572
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Re: Wiring to eliminate reverse
Pretty cool. I worked at a company that had a small foundry many years ago. We did use sand casting, but had perminate molds that had to be packed in halves. I helped sometimes. It was interesting and rewording work, but it was a lot of work.
As far as machining, I can't see "no machining" on that part, but I have no experience with that kind of casting. We did make shinny parts, but not accurate enough to press bearings in. I'm thinking you will need to have a outside lip to tuck in to the motor and a bearing race accurate in the center. The only reason we cast anything was because some of the parts would have cost to much to cut from billet. Example, it would require a 50 lb. billet to make a 7 lb. part. The rest would be a pile of chips. In your case, you could make that part with very little waste on a lathe. I'm not trying to stop you. On the contrary, you've really got my interest. Please take lots of pics. This is a project I might take up. When I was a kid, some guy in my naighberhood made an electric mini bike. He used a 12V starter. I think he had to put bearings in it. (Instead of bushings) he had one big car battery. I don't know what he used for a controller. (Maybe it didn't have one) |
07-12-2016, 08:26 PM | #37 | |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Quote:
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07-12-2016, 08:36 PM | #38 |
Getting Wild
Join Date: Oct 2015
Location: MN
Posts: 76
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Re: Wiring to eliminate reverse
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07-12-2016, 08:47 PM | #39 | |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Quote:
That said, if I could find a reasonably priced, nice powerful dc motor with an output shaft, I'd probably consider it. |
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07-13-2016, 08:35 AM | #40 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Wiring to eliminate reverse
Quote:
So you effectively have a 2" tire height and a 0.8:1 final drive ratio, which will give you 23.8 MPH at 3200 motor RPM (25 MPH is 3361 RPM) As for finding an inexpensive series motor, try posting a WTB in the but/sell parts forum here: http://www.buggiesgonewild.com/golf-carts-parts/ In addition to a smoother ride, the tall tires have a lower impact angle on the bumps and might reduce the drag a little. |
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