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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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07-12-2016, 11:45 AM | #21 |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Here's what I've come up with to run a shaft out of the open end of the motor. Currently this is a plastic 3d printed part but I have plans to make a mold of it and cast it in aluminum.
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07-12-2016, 12:18 PM | #22 | ||
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Wiring to eliminate reverse
Quote:
If it is a 24" tire height being driven by a 2" diameter friction roller, you have a 12:1 gear ratio if the tooth count on the sprockets are the same. That should give you 25 MPH when the motor is spinning at a whisper over 4200 RPM and standard speed series motors used in golf carts typically max out at about 3200 RPM with a 36V battery pack, so it might be a good idea to look for a high speed series motor if you are going to run at 36V, which is the max voltage for the 1204-009 controller. Quote:
Elegant solution for the blue thingy. |
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07-12-2016, 02:05 PM | #23 | |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Quote:
Any tips on where to find a used series motor for cheap? I have a tight budget for this build and a new motor pretty much folds this one up. Oh and by the way, the size of the rear wheel is irrelevant in this drive set up. The friction driver surface speed will match ground speed regardless of wheel size. I could have a 3" wheel and I'd have the same speed and acceleration characteristics. But I want the huge wheels so it's a smooth ride (saves me the trouble of coming up with a suspension). Plus, it looks more ludicrous. Wheels are from a Suzuki gsxr |
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07-12-2016, 02:06 PM | #24 |
Gone Wild
Join Date: Sep 2015
Posts: 572
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Re: Wiring to eliminate reverse
That's pretty cool. Is it reasonable to get it cast? I don't think it would be hard to machine the end out of a piece of aluminum. Your going to have to machine it anyways. What's the plan for batteries?
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07-12-2016, 03:17 PM | #25 |
Gone Wild
Join Date: Apr 2016
Location: Greenwood, SC
Posts: 1,291
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Re: Wiring to eliminate reverse
I was wondering about batteries. Even 3 12v is gonna be heavy and trouble stowing them I would think?
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07-12-2016, 03:23 PM | #26 | |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Quote:
From what I have seen, with a small enough particle size in the mold sand, the cast part won't necessarily need machined. I've seen people cast parts that have come out shiny. Traditionally, post casting machining would have been done to guarantee concentricity or other dimensions that couldn't be held by hand made patterns, but my 3d printer's resolution is 0.25mm so should dimension ally, should be good to go if the casting goes as well as I'm hoping. |
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07-12-2016, 03:25 PM | #27 |
Guest
Posts: n/a
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Re: Wiring to eliminate reverse
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07-12-2016, 03:31 PM | #28 |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Here's one of my 3 batteries and a picture of my aluminum foundry.
Batteries are small, certainly not enough to run all day. I'd be thrilled if it could cruise at speed for an hour. This is very much a novelty. I imagine using it to run to the grocery store or around town. I'm not commuting on it. |
07-12-2016, 03:38 PM | #29 |
Guest
Posts: n/a
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Re: Wiring to eliminate reverse
15 AH... that's really low
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07-12-2016, 03:41 PM | #30 | |
Not Yet Wild
Join Date: Jul 2016
Posts: 22
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Re: Wiring to eliminate reverse
Quote:
If in the future, I'm happy enough with all other aspects I can always upgrade the batteries. |
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