Duals question?

[FC Andy]

Ok, I bought a set of duals for the old 806 for this year. 18.4-34's on 9 bolt rims, as everybody seems worried about running clamp on's on those tractors. Plus, I think axle duals look better on the tractor. (mine had clamp- on's before I owned it, I have the eyelets to prove it.)

Anyway, drives are set with the "dish" of the hub inward, on the "Inner" bevel. I had them set this way for plowing. I'm considering leaving the hubs "In" and moving the rims to the "outer" bevel, effectively narrowing the tractor. I'm hoping this will allow me to set it all the way in for pulling the planter, and for mounting the duals, and also allow me the room to slide the whole wheel out to plow with, in the future.

I won't be plowing much in the future, but possibly some, I purchased a Chisel Plow last fall. Tractor needs duals to pull it well. If I make some money farming this year, Hopefully there will be new tires mouned up this fall to pull the chisel, to match the 2 year old "new" drives.

So, where I'm going with this is, How does everybody else set up their tractors?

A few more pieces of info on mine- I don't have the factory long axles for duals. I have standard length axles. I think this will mean that I will need what I call the extended length M+W hubs, and slide the drives all the way in to mount the 9 bolt hubs. I already have 1 of the M+W hubs, and will need to find another to match.

Anybody else got a better Idea? Thanks, Andy

 

[the tractor vet]

Well it can be set up with the dish out and the rims set in , now depending on your row crop width that will tell ya what side of the wheel the dogs go on and where your dual hubs will set If your tryen to do a straddle dual set up . And with running a hub mount now you can run the same air pressure on the duals as the tractor. With Clamp on duals running the same pressure i have seen a lot of busted axle clamp bolts . So if your doing a 30 inch row the center of the tire should be 30 inch from the center of the PTO to the center of the tread and thirty inches to the center of the dual .

 

[DeltaRed]

I have never run anything but clampons(for over 30 years).Corrently have 4 tractors that use them(SM;706turbo;826;1256)NEVER had a problem.I have the wheels dished in,mounted to the outer bevel.I think if you have short axles,there may not be enough axle for the hubs.When you getr the new tires,put them on the primarys,the 'used' ones on the duals. Good luck!

 

[IaGary]

The way the axle mount daul hubs are designed you just need the end of the axle to be just past the outside of the inside tire or even with the outside of the tire and there will be enough axle for the duals to mount. You can have the inner rim on either rib to achieve this. Only takes about 8 inches of axle to get the hub on.

Now if you are on 38 inch rows for planting that should be about the width you need for plowing as well.

We ran axle duals on many IH tractors and never moved the inner wheel around for plowing with a 5-16s plow or planting when on 38 inch rows.

You may want to move the hitch on the plow rather than moving tires in and out.

Gary

 

[scotc]

The 966 my grandpa bought new in 72, had clamp-on duals. When we sold it around 94, it had 11,000 hours, and it became the new owners primary tractor, still running those duals, without any hub breakage.

 

[mkirsch]

Guys it serves no purpose to sing the praises of clamp on duals at this point. He already has the axle duals, and it probably took long enough to find a set of those at a decent price. No sense in starting out at square one again.

Frankly, you have to figure out what works best for you. All you should really need is enough bare axle for the 9-bolt hub to clamp to, and for the flange to stick out past the edge of the tire.

 

[scotc]

I keep hearing how axle duals break hubs whenever they are run.
I also keep hearing how my early SM is a hermaphrodite because it's got the battery under the seat without live hydraulics, that someone's changed the seat, yet that's how my grandmother bought it as a low-hour demo unit. It might have been ordered that way, but if it was going to be used as a demo, why would you order it with all 30 year old technology?
Just thought it's funny how a few people's experience or a memo with an estimate of when changes would be made as parts run out on the line is supposed to be absolute fact.

 

[AG in IN]

If you can't come up with long enough hubs to get your axle-mounted dual wheels spaced where you want them, Unverferth and others made 9-bolt extensions in a couple of different lengths. Bolt extension to hub and wheel to extension. Sometimes you need an extension if the dual wheel centers are not dished where you need them to be.

Dad's 806 with clamp type inner wheels probably cracked a wheel every 5 years when he used to have clamp-ons on it. Every couple of years it was off to Leesburg or Bates to get a wheel. His 1256 with wedge-lock wheels probably got worked harder, and never broke a wheel with clamp-ons. Other than a hub coming loose once, I don't remember having any problems with axle mount duals.

AG