Wheel Widths C series, 300/400?

[RED-Z06 2,422]

Ive got a few wheel sets, one off a C100, one off a 312, 416-H, and a C160.  I need to line them up and measure as best i can, the C160 wheels looked like 8" width, the C100 looks narrower.  Were these all the same width and offset or did WH play with that over the years?

[pfrederi 18,219]

7.5" and 8.5 "  Back set was 1-3/8"  most other companies  (JD) had 2-3/8 back set.

[RED-Z06 2,422]

45 minutes ago, pfrederi said:

7.5" and 8.5 "  Back set was 1-3/8"  most other companies  (JD) had 2-3/8 back set.

I definitely noticed the backspace was visually very shallow compared to some others

[Brockport Bill 1,788]

2 hours ago, pfrederi said:

7.5" and 8.5 "  Back set was 1-3/8"  most other companies  (JD) had 2-3/8 back set.

sorry for the amateur question -- i could guess.... but perhaps someone could explain what is the "back set" - or maybe even draw an arrow on a wheel rim photo ?

 

thanks - - always trying to learn new things!!!!!

[Blasterdad 2,832]

1 hour ago, Brockport Bill said:

sorry for the amateur question -- i could guess.... but perhaps someone could explain what is the "back set" - or maybe even draw an arrow on a wheel rim photo ?

 

thanks - - always trying to learn new things!!!!!

[RED-Z06 2,422]

1 hour ago, Brockport Bill said:

sorry for the amateur question -- i could guess.... but perhaps someone could explain what is the "back set" - or maybe even draw an arrow on a wheel rim photo ?

 

thanks - - always trying to learn new things!!!!!

If you are looking at a wheel, such as from the back of the tractor, right side.  If you were to imagine a line around the wheel dead center...if thats where the mounting face is located...equal distance from the tractor side and the outside..it would be Zero offset,  if you're wheel is 8" wide; you would thus have 4" of backspace from the wheel lip to the mounting flange.  

 

If the mounting hub is nearer the outside of the wheel, like on all wheel steer tractors, you would have positive offset, and if its closer to the tractor side, you have negative offset.

 

The smaller your backspacing is, the wider the wheels will sit.

 

[ri702bill 8,787]

 

On early tractors, the steering arms are quite visably angled in to line up if extended to meet at the center of the Unidrive ( aka the Ackerman Angle).

Changing the offset of the front rims definetly affects the steering action.

 

Edited yesterday at 11:59 AM by ri702bill

[Racinbob 11,536]

Wheel offset for dummies like me. Wheel Horses definitely have a shallow offset. I had a pair of 23-10.50 from a Craftsman that weren't even close to fitting. It awkward to measure but I cut a board to fit inside the rim lips. 

 

 

I would find wheel/tires on Marketplace  and ask what they came off of. It was about 50/50 who knew. So I would send them this picture and ask them to measure from the backside. It's blurry but you get the idea. Most were well over 2". I also carried the board with me so it I saw some on the side of the road. I saw some online and contacted the seller. The offset was a bit more but as hard as it is to find them I just resided myself to getting spacers. These tires were just too nice. But they fit! No chains allowed without spacers though. 

 

 

 

[RED-Z06 2,422]

The unidrive rear is relatively narrow from hub to hub compared to the peerless, tuff torq, HydroGear and other transmissions used over the years in other brands. So the small backspace wheels make sense

[Brockport Bill 1,788]

11 hours ago, RED-Z06 said:

If you are looking at a wheel, such as from the back of the tractor, right side.  If you were to imagine a line around the wheel dead center...if thats where the mounting face is located...equal distance from the tractor side and the outside..it would be Zero offset,  if you're wheel is 8" wide; you would thus have 4" of backspace from the wheel lip to the mounting flange.  

 

If the mounting hub is nearer the outside of the wheel, like on all wheel steer tractors, you would have positive offset, and if its closer to the tractor side, you have negative offset.

 

The smaller your backspacing is, the wider the wheels will sit.

 

ahhhh -- makes sense --thanks

[Lee1977 6,940]

Not all 300 series have the same rear wheel widths. My 1985 312-8 had 5" wide wheels on the rear and also narrow 6" wheels on the front also with a 3 amp. charging system. 

My other 312-8 had 7" wide on the rear. I have the two sets of 6" wheels not sure of the widths but one set is wider. 

 

[clueless 3,079]

4 hours ago, ri702bill said:

 

On early tractors, the steering arms are quite visably angled in to line up if extended to meet at the center of the Unidrive ( aka the Ackerman Angle).

Changing the offset of the front rims definetly affects the steering action.

 

What is the rear offset of the early (702) tractors?

 

[RED-Z06 2,422]

Got some stuff measured...kinda disappointed.

 

C160 12x7.5 1.625 backspace 

312-8 12x7.5 1.625 backspace 

416-H 12x7.5 1.625 backspace 

C100 looks narrower so its no more than 7.5 wide.

 

The high point was by far the 12x8.5 1.625 backspace Deere wheels i found.

[gwest_ca-(File Mod) 11,187]

Rim width is where the tire bead lands. Not the overall width of the rim.

[kpinnc 13,214]

2 hours ago, RED-Z06 said:

The high point was by far the 12x8.5 1.625 backspace Deere wheels i found.

 

JD did make some nice wheels. But they often mount them backwards from wheel horse, with the dish facing inward. 

 

My Bronco has rear wheels from a JD, turned deep dish in of course. 

 

[RED-Z06 2,422]

33 minutes ago, kpinnc said:

 

JD did make some nice wheels. But they often mount them backwards from wheel horse, with the dish facing inward. 

 

My Bronco has rear wheels from a JD, turned deep dish in of course. 

 

 

Alot of them you can just flip them into wide mode, people usually end up running narrow all the time 

[Tonytoro416 1,086]

These are John Deere wheels also