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Tire Chain Dimensions

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Tractor Guru

Joined: 08 Apr 2005
Posts: 10756
Location: Myersville, MD

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PostPosted: Sun Dec 15, 2019 3:46 pm    Post subject: Re: Tire Chain Dimensions Reply to specific post Reply with quote

Royse wrote:
(quoted from post at 18:46:47 12/15/19)
TheOldHokie wrote:
(quoted from post at 12:52:52 12/15/19)
Royse wrote:
(quoted from post at 11:07:33 12/15/19) The set I have measures 30 x 120.
That's not even close to what lists, but they fit.
I haven't been able to find a picture of the tractor with them on.
That would be nice so you could see how far they wrap over the side.

The arithmetic is pretty simple. Cross chain length will determine the location of the side chains relative to the tire OD. Once you have determined the diameter of that side chain circle the length is simply 3.14 x circle diameter.

I also suspect the dimensions you get with that calculation will vary considerably based on the cross chain and tire tread patterns. Ladder chains are going to drop between the lugs more than a duo type chain so the side chain diameter for ladder chains of a given length is likely going to be smaller than DUO chains with the same cross chain length. Lug spacing and size is also going to alter that side chain diameter. In other words, geometric calculations are just a good starting point and length customization will likely be needed to address variations in tire and chain designs.


I was kind of thinking the same thing, but I went about it a little differently.
I took the length of the side chains and figured out the diameter of the circle they would make.
That works out to be roughly 38 inches, leaving them 5 inches from the rim edges.
My equation would be moot if I didn't already know they fit, because shorter cross chains could prohibit them fitting.
As it is, they fit on brand new 14.9 x 28 tires. Worn tires would obviously be shorter.

Now, just for fun, I'll have to go try the other set of chains I bought.
They are also Duo link, but 25 inches wide by 132 inches long.
If they won't fit my 14.9's, I can make them fit my 13.6's.

Our calculations are the same but your explanation is clearer.

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Tim PloughNman Daley
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Joined: 18 Sep 2004
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PostPosted: Thu Dec 19, 2019 3:19 am    Post subject: Re: Tire Chain Dimensions Reply to specific post Reply with quote

We answered this the other day on the other forum.... see LINK -TIRE

Tim *PloughNman* Daley(MI)

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Joined: 29 Jan 1998
Posts: 21538

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PostPosted: Thu Dec 19, 2019 5:59 am    Post subject: Re: Tire Chain Dimensions Reply to specific post Reply with quote

Actually, not so.

My, since answered elsewhere, question is different.

Initially, I thought that a chart to answer my question is, or at least had been, on the web page, but there is no such information there.

Suitable information is available on the leClede web page.

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