Hub Duals or a Second Set of Rims?

Maybe I haven't had quite enough of my caffeinated beverage yet this morning and this is a dumb question, but is there any reason why a guy couldn't use a another set of standard rims instead of a set of hub mounted duals? With a second set of cast iron rims, you'd be getting weight as well as the extra tire. I image the rim would have to be moved to another ring to get the spacing right. Around here, nobody wants 34 inch wheels, so I'd have a better chance scoring a set. Probably a second set of 16.9-34s at first, later 18.4s. Everybody's looking for hub duals and most of the ones I've seen are 38s, not 34s.

Should I have had another cuppa before typing this, or is this feasible?

In most cases the axle is Not long enough.

And secondly who whats to handle all that weight when installing and removing for the season.

Now if your gonna leave them on all the time it might be worth some measuring to see if you have enough axle.

In this area back in the '50's that was how duals started by using an extra set of cast centers and rims from an unused tractor. Armand

Jim: Your suggestion will work if the axles are long enough. That is how I dualed my 560, as did a lot of folks with the older dished cast wheels. With those one could dish the inside wheel in and outside wheel out. As I recall with my 560 there was very little more than enough axle length to do this with 16.9x38 inside and 14.6x38 on outside. My inside tire was less than 2" from fender and outside hub was flush with end of the axle, and the tires were about 2" apart. Now, I've seen guys do this with 13.6 on 300, 400, etc. with loads of room. Course those axles were same length as 560. Your 826 even with standard axle will be 6" longer each side than 560.

On my 1066 with factory axle duals, my inside tire was 3" from cab, tires were 4" apart and dual hubs were almost flush with end of axle. That was with two 20.8x38. I know 766 and 1066 standard axles were same length, thus I assume your 826 is the same or longer if it has optional axles. You might just be able to do this using 16.9 tires, each tire being close to 4" inches narrower than 20.8 tires.

Pour yourself a second cup, grab the yard stick, a 5 gallon pail to sit on, pencil, paper and calculator if necessary. Got out and park yourself at end of 826 axle. Place the yard stick through wheel to the fender, record the distance from fender to end of axle. Then calculate the maximum offset you can achive with rim bead and changing clamps to outside of wheel. I'm thinking of outside wheel in doing this, and when you figure the calculations for maximum dish for outside wheel, imagine it being at end of axle. From there you decide if there is enough room for an inside tire between it and fender. You don't need to worry about hubs, axle is lots long for two. Just be certain you have 5" more space than width of tire to allow a bit of clearence between tires and tire and fender.

Back when I dualed my 560 that is exactly how I had to calculate this. I spent the better part of Sun. afternoon parked beside tractor calculating where that tire would be if at end of axle with maximum dish. Back in 1976 I didn't have YT and a computer to ask questions. As I recall I couldn't have achived this with 2 16.9x38.

Don't hollar at me, 'cause I've probably had two cups too many already and should just keep my yap shut. :>(

However, I'm with the other fellas. 'Bout the first time ya go to mount the silly things or kick 'em off you'll be cussin' yer mama fer brinin' ya into this world.

Really think your opinion of clamp-ons is a bit extreme. Just make sure all the mounting bolts are grade 8 and GOOD AND TIGHT.

Allan

Allen: Won't ever hollar! I appreciate the effort everyone takes to form and post an opinion.

As to the duals, I doubt I'd ever change them, once installed. No real need to. My tractor is tilling (8-shank chisel, moldboard have a 3 botom now, lookng for a 4), 15' disc, 14' harrowgater, cultivator or 14' cultimulcher) or parked. I have a smaller tractor for everyday little stuff and even use the little one to pull my drill.

After what happened, boy, I'm not sure I can get my head around clamp-ons. I've been downright paranoid about the clamp bolts. Bought all new studs after the incident and I check them often.

My Allis 7580 had clamp-on duals, and if they stood up to the weight and torque of that thing, I don't see why they'd be a problem on a 100-120HP machine. The 966 we had had clamp-ons.

An 826 has wedgelock wheels, right?

That could present a problem with two of them on the same axle if you ever had any need to move them. With only 2" between the tires how do you get the wedge removal tool in there to get the outside wheel off? You'd have to pull the outside rim and tire.

Nope, no wedgelocks. It's got stud clamps and that's the worry. I don't know all the details but not all 826s have wedgelocks. After what happened and the subsequent local advice and horror stories, it seemed smart to steer clear of clamp-ons.

MKirsch. That wouldn't be a whole lot different than wedge lock on inner wheel and factory pressed steel duals with cast hubs. Those were close to impossible to get at wedge lock bolt unless the two wheels were 6" apart.

I had my tires on 1066 about 2" from cab, 3-4 inches apart, and keeping tractor that narrow, I was able to use duals on my NH 890 forage harvester with long tongue.

Jim: I'd never worry about a second set of wheels, same as you have. Problem will be finding wrench equipment to retighten after you once install them.

By the way, what did the yard stick tell you? Do you have room for two 16.9x34? I'm betting if you get 16.9x34 on there, get them set tight, they will give all the traction you'll ever need.

Not yet, Hugh. It's on my "round-to-it" list.

Jim: Just checking to make sure you didn't sit at the end of the axle all night. Thinking only of my own approach, of course.

When I start cyphering, all else stops. I remember once, our oldest daughter was going out on one of her first dates. The new boyfriend came and Marg. parked him across the room from me in front of the TV, as he waited for his not yet ready date. Marg. was in the kitchen, noticed the young lad squirming rather restlessly in his chair. She walked in to see me glaring right at the young lad. She said to him, "Don't pay any attention to Marilyn's dad, he is putting a tractor together, he doesn't even see you. He was that way at dinner as well, when he gets like that we just ignor him."