Conquest with runamuck & Frontier tires

[cjdee]

Has anyone tried to run runamucks 22" in the front and rear tires and 4 frontier tires 24" in the middle? Can the frontier tires mount on the OEM rims?

[Stonewall]

You CAN NOT do this without driveline modifications!!! With all of the axles rotating at the same speed the 22" tires are going to be slower than the 24" tires, so your chains will bind up and your Argo will be FUBAR... To make this work you'll have to change the sprocket ratios so that the front and rear axles are turning slightly faster than the middle ones. I would do the math for you but I'm on a tractor right now. I'll figure it up when I get home later.

[cjdee]

When you can do the math. I am up for a mod

[Stonewall]

I'll try to do it tonight, probably before 9.

[Stonewall]

OK, this should work if your front and rear axles (the ones with 22" tires) make 15 rotations for every 14 rotations of the middle axles. How many teeth do your sprockets have?

[cjdee]

I will have to reseach that info.

[Stonewall]

I did some more research and calculations, and what's required for this to work is a 1.09117221:1 sprocket ratio. I think you will be able to get by with 28 tooth sprockets on the front and rear, and 30 tooth sprockets on the middle, this will give you a 1.07142857:1 ratio. (I'm not sure if that is enough to make a difference, but it's seems fairly neglegable.) Obviously keep your stock sprockets between the middle axles so they turn the same speed. Of course don't forget that this is all on paper assuming perfect diameter and circumference of the tires, etc.

[DerekF]

Is it even an option to get sprockets with different teeth count on them? I have to change my out in a bit here and would not mind trying to gear the machine down a bit. 05 avenger BTW.

[newguy]

I was thinking of going up to 24" last year (first/new owner of an older/used argo). I saw a previous thread about 24 " tires on a conquest and someone mentioned clearance issues between the tires. My '96 conquest (with well worn 22" runamucks) have less than 2" clearance between the tops of the treads. Short answer; 24" tires will rub each other. I think Rockdoctor (definitely has a PhD in Argo-iatrics) has probably accomplished, and shared most modifications that add bush value to an Argo. Find one of his threads and ask him.

[cjdee]

What is the OEM sprocket count?

[MaxRules]

If you are looking for a little bit easier steering with your tire setup, your best option would be to run six 24" tires and two 22" tires on the rear. No need to change sprockets. The rear tire would rarely touch the ground as long as the rear the of vehicle wasn't over loaded. Even if the rear tire was touching here and there on hard ground, it would be light enough so the chain could handle the very small difference in tire diameter. When you got in mud, you'd be back to eight wheel drive. This might be a good set up for steering your 8x8 if you run a lot on hard ground.

Also, the 24" Frontier tires will definately fit the older 8x8s. Many forum members run them and it is a great improvement in performance. Keep in mind that many of the new Argo tires have quite a drastic difference in actual tire diameter. You might have to measure a few and put the smallest on the front two axles of each side of your 8x8.

[Rock Doctor]

Has anyone tried to run runamucks 22" in the front and rear tires and 4 frontier tires 24" in the middle? Can the frontier tires mount on the OEM rims?

What is your goal here CJ?
Easier steering.

Yes, the Frontier Tires will fit the OEM Rims


RD

[cjdee]

RD. I want more clearance and traction.

What is your goal here CJ?
Easier steering.

Yes, the Frontier Tires will fit the OEM Rims


RD

[Rock Doctor]

I would suggest putting the 24" Frontier Tires all the way around then.
First thing, air up a set of Frontiers to 4lbs. Measure all Circumfrences.
On my conquest the tightest axle C-C's are on the front to second axles, so I have the 2 smallest Frontier tires on the front axles, second smallest tires on the second axles, ect.

I do know one guy that tried exactly what you initially suggested, but once I explained what to do, he managed to get a full set of 24's mounted.

At first, when I put them on, I would get a little rubbing between tires sometimes. After a little wear and a slight drop in air pressure, everything is fine with them. I would have to say that these are the biggest tires that can be put on, unless you start moding frames.

RD