Wayslow
Wayslow Reader
1/25/10 10:01 p.m.

I need to relocate the alternator on my Toyota 4age powered Lotus Europa. I wandered through my local wrecker and found some decent options including a 3 cylinder Chevy Sprint. I went to a homebuilt aircraft site and found that they were using the alternator from a John Deere Gator. They say it has a 12v 40a output and is only 3 or so inches in diameter.

Here is the info I found on it. The alternator from a John Deere Diesel Gator Part Number: AM877740 Output: 40 amps Weight: 2.96 lbs.

Has anyone used one of these or does anyone own a Gator that could confirm the size of the alternator? My local JD dealer wasn't very helpful and they didn't have one in stock for me to see.

Thanks

Junkyard_Dog
Junkyard_Dog HalfDork
1/25/10 10:13 p.m.

This it? If that'll work I want one!

Wayslow
Wayslow Reader
1/25/10 10:19 p.m.
Junkyard_Dog wrote: This it? If that'll work I want one!

That's the one. I really want to see one in real life before I order it though.

Spinout007
Spinout007 GRM+ Memberand HalfDork
1/25/10 10:41 p.m.

Find a local john deer dealer, they're all over the place down here. go in and ask to look at one.

16vCorey
16vCorey SuperDork
1/25/10 10:48 p.m.

Ummm...

Wayslow wrote: My local JD dealer wasn't very helpful and they didn't have one in stock for me to see.
Toyman01
Toyman01 GRM+ Memberand Dork
1/25/10 10:53 p.m.

Did they have a gator? Tell them you want to look under the hood.

tr8todd
tr8todd New Reader
1/26/10 7:45 a.m.

Make sure it is rated for the RPMs your motor will turn. Chances are most tractors don't see 6,000 RPMs. That being said, I have seen forklift ones mounted in the space between the intake manifold and the valley pan on some street rods. Tiny. I think TVR did something similar.

mad_machine
mad_machine GRM+ Memberand SuperDork
1/26/10 9:13 a.m.

airplanes do not see 6000rpms either... Most propellers disintergrate at high RPM speeds

zomby woof
zomby woof Reader
1/26/10 9:21 a.m.

But those 3 cyl Metro motors used in aircraft regularly see 5000 + RPM

mad_machine
mad_machine GRM+ Memberand SuperDork
1/26/10 9:32 a.m.

they use gear reduction? I am only really familier with people bolting propellers straight to VW engines.. generally once the prop gets to about 2000rpms, they start falling apart

Kendall_Jones
Kendall_Jones Reader
1/26/10 9:37 a.m.

Its the pulley size that dictates the alternator RPM - In fact most alternators spin much @ a much higher RPM than the engine - 9K or so

Kendall

Basil Exposition
Basil Exposition New Reader
1/26/10 10:26 a.m.

I've heard of Kubota tractor alternators being used in various applications, as well. There are also what are called "super mini" alternators that are sold for race cars. You can do a search and find many offerings.

Here is a set of pictures on a Kubota install in a MGB. It shows the Kubota next to a stock Lucas alternator, if that helps:

http://rides.webshots.com/album/569689120zNLXeL

7pilot
7pilot New Reader
1/26/10 11:18 a.m.

Geo Metro engines are Suzuki engines. Motorcycle engines in a way. They'll take 8000rpm. The case tends to split if you misshift at 8k as the engine will then zing past 10k. A friend of mine has run these in NA and Turbo classes with the ECTA and SCTA.

5k rpm is nothing for them.

m

Stealthtercel
Stealthtercel Reader
1/26/10 11:40 a.m.

Wayslow,

If you tried the dealer in Orono and got nowhere, try these guys:

here

No affiliation, but I go past them on my way up north and they seem to have one of everything.

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