1.9" tires on a 2.2" wheel

[MVRCA]

Been experimenting with this a bit more and while it's nothing new in the crawler world, it's fun to fool with from time to time. On our super light crawlers, it seems to give them a bit more of a nimble feel. We stretch 1.9" two-stage CI foams and a JC Rupture tire over a narrow 2.2" wheel, and the Antero crawler does well with this setup.

 

[Doom!]

Been experimenting with this a bit more and while it's nothing new in the crawler world, it's fun to fool with from time to time. On our super light crawlers, it seems to give them a bit more of a nimble feel. We stretch 1.9" two-stage CI foams and a JC Rupture tire over a narrow 2.2" wheel, and the Antero crawler does well with this setup.

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If I tried that the tire woud shoot off like a rubberband and take out an eye.

It's pretty cool to see some of the things you've tried.

 

[MVRCA]

If I tried that the tire woud shoot off like a rubberband and take out an eye.

It's pretty cool to see some of the things you've tried.

It works well with scrubbed-in tires. Give it a whirl and you might be surprised with the performance.

 

[Doom!]

It works well with scrubbed-in tires. Give it a whirl and you might be surprised with the performance.

I will keep this on my list of things to try, but I'm still wearing goggles.

 

[Jerold]

So the outside diameter of the tire is still 4.75, right?

 

[MVRCA]

Yes, the OD remains the same. The advantage is that with a proper foam setup, you still get the traction as you would with the 1.9" wheel, but you get a gained level of precision and control when you crawl. It really helps on sidehill and narrow technical terrain, such as steps and ledges.

 

[kdecesari]

Yes, the OD remains the same. The advantage is that with a proper foam setup, you still get the traction as you would with the 1.9" wheel, but you get a gained level of precision and control when you crawl. It really helps on sidehill and narrow technical terrain, such as steps and ledges.

How much time & thought went into finding the right foam setup from CI? How did that process work for you? After the stretching it seems that’s a task on your own to figure that out.
Good on ya.

 

[Rcflyer616]

It works

 

[MVRCA]

How much time & thought went into finding the right foam setup from CI? How did that process work for you? After the stretching it seems that’s a task on your own to figure that out.
Good on ya.

Howdy K,

Much of this is based on how the truck is running with a 1.9" wheel. You get a feel for the right amount of tire squish, and from there you tune the foams. Often I just save my older CI foams, the 4.5's and stretch them over the spacer rings. Some tires will fight you more than others.

As far as time testing, we have spent hundreds of hours testing tires and trucks out on the trail, and during that testing process we has developed setups what work very well for specific trucks. As you know, there is no one-size fits all approach, but there are some commonalities.