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JD 530 model question

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Richard Kleinhe

08-14-2000 19:23:40




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Hello,
my nephew just bought a 1/64 scale tractor replica of a John Deere model 530. When he took it out of the package, he was surprised to find 2 rear wheels on the left, 1 on the right. The dealer told us all of the other ones they have are the same way. This seems very strange even to me who knows not much about tractors. My nephew, the expert, says it's hogwash. I was referred her by John Deere company who had no information on a 530.

1. Can this possibly be right? Are ther ANY tractors with such an asymmetrical wheel configuration?
2. Were the original 530s or any 530s built that way?
3. Why?

Thank you in advance for any help!

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Stan Huff

08-15-2000 04:04:23




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 Re: JD 530 model question in reply to Richard Kleinhenz, 08-14-2000 19:23:40  
Nope, this was not a mistake by Ertl. These particular 1/64 toys were made, advertised, and sold as a "plow tractor", with the extra land wheel to provide more traction, most likely in slick alfalfa/clover/sweet clover sod plowing - this traction would certainly be weclomed on a wet morning.

I have never seen any of these in real life, either, but that's what Ertl called them.

Stan



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STMTS

08-14-2000 20:16:03




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 Re: JD 530 model question in reply to Richard Kleinhenz, 08-14-2000 19:23:40  
It's probably a factory flaw or the like ,but they must have made thousands anyway.The real thing wasn't regularly fitted that way.



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Duke

08-14-2000 21:11:41




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 Re: Re: JD 530 model question in reply to STMTS, 08-14-2000 20:16:03  
When plowing got tough we used to put a dual on the landside (left) for more traction.



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Richard Kleinhenz

08-15-2000 10:05:37




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 Re: Re: Re: JD 530 model question in reply to Duke, 08-14-2000 21:11:41  
Thanks, this makes sense, but why only on the left? Why not both sides? Doesn't the uneven traction create problems?



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JD-A man

08-15-2000 13:18:18




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 Re: Re: Re: Re: JD 530 model question in reply to Richard Kleinhenz, 08-15-2000 10:05:37  
the other side is down in furrow while plowwing you couldn't drop it in there with a dual wheel.
the dual wheels only on the left wont cause uneven traction either



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Rich Kleinhenz

08-15-2000 13:30:48




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 Re: Re: Re: Re: Re: JD 530 model question in reply to JD-A man, 08-15-2000 13:18:18  
Thanks a lot, it all makes perfect sense now!



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Ron

08-15-2000 13:53:13




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 Re: Re: Re: Re: Re: Re: JD 530 model question in reply to Rich Kleinhenz, 08-15-2000 13:30:48  
(I thought of this earlier but didn't write it, maybe it doesn't add anything but here goes)
Plowing with single rear tires, sort of by default, meant the right tire was in the furrow. This caused the weight center of the tractor to shift to the right of center and made the weight on the right tire greater than the weight on the left tire since the tractor is leaning to the right. Naturally that caused the left tire to have less traction and a way to overcome this was to add the dual wheel on the left side. (Another way to compensate was to add pressure to the right tire, typically just a few extra pounds, to give it a more rounded tread and thus thoeretically have less traction) Later when the more powerful tractors came available that had duals on both rear wheels as standard, plows were hitched so both tractor rear wheels could run on unplowed ground and thus maintain equal rear wheel traction. Hope this makes some sense!

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Gator

08-15-2000 19:23:08




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 Re: Re: Re: Re: Re: Re: Re: JD 530 model question in reply to Ron, 08-15-2000 13:53:13  
The duals on the back and an offset hitch to keep the plow in the furrow caused a poor geometry with the draw bar thats why it was not commonly done up here with our heavier soil.



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