Rear wheel spacing

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bobburke
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Rear wheel spacing

Postby bobburke » Thu Jun 25, 2020 4:46 pm

Hello everyone. I bought a 74 IH cub to cultivate between the plastic on our farm. The front axle is set all the way in and is about 42” to the outside of the tires. The rears are 46 outside so I thought I could move the rim mounting lugs to the outside of the rim centers but it hits the fenders by a 1/4”. Seems odd that it was designed that way. Has anyone figured a way around this?
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Glen
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Re: Rear wheel spacing

Postby Glen » Thu Jun 25, 2020 5:10 pm

Hi,
Below is a page from the 1965 Cub operator's manual, showing the rear wheel spacings.
It shows the narrowest setting where the outline of the tire is, the lugs are on the outside of the wheel center disc. It is the right rear wheel in the pic. :)

http://farmallcub.com/rudi_cub/www.clea ... age-46.jpg

I'm not sure if you have it set that way.
The fender might be bent towards the tire.
If it has 9.5 x 24 rear tires, that might be why it hits the fender.

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Re: Rear wheel spacing

Postby Barnyard » Thu Jun 25, 2020 6:16 pm

Which way are your centers mounted? Have you tried swapping the left tire with the right? Check this out. viewtopic.php?f=143&t=86456
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Re: Rear wheel spacing

Postby Dale Finch » Thu Jun 25, 2020 6:34 pm

What size tires do you have?

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Re: Rear wheel spacing

Postby staninlowerAL » Thu Jun 25, 2020 7:06 pm

8.3 tires are a little more narrow than 9.5's. I had the same problem when I changed my 76 to 9.5 turfs.

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Dale Finch
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Re: Rear wheel spacing

Postby Dale Finch » Thu Jun 25, 2020 9:06 pm

Yeah, that's why I asked. When I redid my first cub, I decided I liked the looks of the 9.5's better than the ratty 8.3's that were on it, so put them on. The fenders hit and I had to swap things around a bit.

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Re: Rear wheel spacing

Postby k hutchins » Fri Jun 26, 2020 6:51 am

Different wheel mounting configurations can be found in the manuals. Depending on which manual you check they appear to be around pgs 43-47. With the broader tires you got you may need to invert or reverse the hubs and rims to get clearance from the fender. Each different configuration should "spread" the tires app. 2". Since you're setting up to cultivate a given width, it may take some experimentation to get them to a happy medium.

Good luck
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Re: Rear wheel spacing

Postby Servicetune » Sat Jun 27, 2020 9:13 am

As the design minimum rear track is 40” between tyre centres this would give 48” across the outer of the tyres with standard 8” tyres. If you have 46” then something appears to be wrong. Minimum track is with the wheel disc inwards, the tread lug outside the disc and the tyre centre line inwards. Perhaps you have the lugs on the inside of the disc?
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