k0ua
Epic Contributor
I suspect if you put chains on the front, and some more weight in the back, you will have a very capable plowing truck.
Yes, it showed it very well. I've seen tracked excavators slide a lot on ice. Any regular person would assume they'd work great.... then you see this huge machine sliding down a very shallow slope. Kinda scary.
Even more so if you are driving it! (been there)
And a dozer slides on solid rock just as bad as on ice.
So what's the consensus from those that plow snow for a living?
So did the 100 hp just try to drag you out? Where as the 125 hp picked your truck's butt up (adding to traction and freeing the rear diff.) to pull you out? Or was it just the fact that the 100 hp might have been 2 wd and the 125 hp was 4 wd?
They sure do. I'll take a tractor with chains on ice over a dozer any day of the week. I just had to pull a triaxle out of my driveway 2 weeks ago. The old guy wanted me to try pulling him with the dozer and I flat out refused to even consider it. The dozer weighs nearly twice as much as my 4wd tractor but with tire chains on the tractor I was able to pull him right up the icy driveway.
I would think that dually tires would hinder traction, as it is twice the flotation, so each tire only gets half the weight. You're still putting the same amount of weight to the ground, but its spread out over twice the area, so there's less pressure under each tire patch.
If that is the case, then Newtons third law is incorrect. The one that states "for every action there is an equal and opposite reaction".
Lets say that the truck has 5000# on its rear axle and the tires are inflated to 80#. If the tires have a 6" width, then the length of the contact patch will be about 5.2" or 31.25 Sq In. This not correct in the real world as the tire is a semi rigid structure and the load at the edges of the contact patch will diminish to 0 PSI increasing the actual contact patch.
Given that, if you add a second tire to the axle, the contact patch will be cut in half, but the pressure exerted will still be 80 PSI (average) over the increased area.