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Ford 9N, 2N & 8N Discussion Forum

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Wide Rear Wheels 8N

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Andy (MN)

04-23-2007 17:34:47

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I had this idea to put 24' wheels on the rear and wondered if I could find some that would bolt to the hub as is. I think I measured 6" bolt circle and 8 lugs , any other tractors or combines use a wheel that would fit?

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souNdguy

04-24-2007 06:07:56

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Re: Wide Rear Wheels 8N in reply to Andy (MN), 04-23-2007 17:34:47

I got 16.9x24's on my NAA.. should fit an 8n as well. They are turf tires.. etc.

Soundguy

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Andy (MN)

04-24-2007 20:15:09

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Re: Wide Rear Wheels 8N in reply to souNdguy, 04-24-2007 06:07:56

Soundguy, Thanks for the picture....Looks good on there

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ButtonRock

04-24-2007 03:45:30

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Re: Wide Rear Wheels 8N in reply to Andy (MN), 04-23-2007 17:34:47

My 44 2n has 24 inch wheels welded to the centers. Also 15 inch car tires in front on homemade rims. I imagine to lower the tractor.

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Dean

04-24-2007 03:35:45

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Re: Wide Rear Wheels 8N in reply to Andy (MN), 04-23-2007 17:34:47

Andy:

Both Ford and MF offered 24" rims as options on some models. Readily available 14.9X24 tires are nearly identical in circumference as 13.6X28 tires but either is somewhat taller than the 11.2X28 that are standard for your 8N.

If you install either on your N you will actually be increasing ground speed. The ideal set up for you to decrease ground speed (aside from a Sherman combo) would be a set of the hard to find 8.2X24 duals as used on low profile models in the early 60s. The downside of these aside from availability is the increased width of the tractor and the corresponding effect upon maneuverability.

Dean

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JohnIa

04-23-2007 17:41:34

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Re: Wide Rear Wheels 8N in reply to Andy (MN), 04-23-2007 17:34:47

Andy, yes some combine wheels will fit. But ford industrial 24 inch rims would also fit. The down fall to all this is, your losing your road gear plus cutting all gear ratios by 1/4 and your doubling the rear end torque which makes it twice as easy to break an axle or tear up a rear end. John

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roger '40 9n

04-23-2007 20:37:49

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Re: Wide Rear Wheels 8N in reply to JohnIa, 04-23-2007 17:41:34

Nope. Torque stays the same. Same engine, same transmission, same rear end. Torque is force times distance from center. The engine,transmission and rear end are producing the torque, not the tires. What you get is higher force on the ground at a smaller distance from the axle and lower ground speed.

The engine should stall or the wheels slip before the transmission self-destructs (if the system is designed properly :-) )

Let's see: 24" rims vs 28" rims. Say we have 8" high tires.
So the 24" rims would have a diameter of 40"
and with the 28" rims we would have a diameter of 44"
That is more like a 10% drop in speed and a 10% increase in ground force.

Roger in Michigan

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Andy (MN)

04-23-2007 17:52:58

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Re: Wide Rear Wheels 8N in reply to JohnIa, 04-23-2007 17:41:34

I figgered that would slow it down some. But after working with the rear blade turned backwards and plowing in reverse.... These tractors back up way too fast, and you have to throttle up a little for power... that was SCARRY

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Carl (NH)

04-23-2007 20:01:38

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Re: Wide Rear Wheels 8N in reply to Andy (MN), 04-23-2007 17:52:58

What you need is a Sherman step down transmission. The step down really slows down reverse. My 8N has the combo Sherman but I really only find the step down part of it useful. Since I have a loader, I often use the tractor in stepdown mode when driving into a gravel pile or using the bucket for grading. By putting the bucket down and back dragging in reverse I can smooth out the gravel on my driveway quite nicely. And I agree, regular reverse is too fast for any type of work. But in stepdown reverse, it really goes much slower!
Carl

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