ASV is now back to being owned by the guys that started the company, and they are in Minnesota/Canada. The ASV Positrack was the orginal Forestry Mulcher, and, had great snow capability. I used a ASV 4810 in my Beach renourishment and Dune Restoration, as they could climb and push sand like no other. No dozer could climmb the grades I needed to install, no other tracked machine could either. Whe nI went to buy, I invited the three player out there at the time to bring me their demo units- and over the phone, they were confident. On the site, they loaded up and went home after lunch, no sale. I was not fond of the PosiTraks track tensioning and as I was leasing from a Cat Dealer, the machine had been beat on too.
When I bought my large acreage, and I had sold my landscaping business and my environmental engineering and construction business, I had kept a few machines, but most equipment and tools also got sold. I kept a 10,000 hour Bobcat rubber tire 763 (Kubota motor) I never had to oopen the motor or hydraulic pumps, for my own self.
I was looking at its 7th set of tires needed, and had been getting stuck in the clay-ey sand at my ranch, and if i got to the Gumbo, i was just stuck-stuck. I got real good at using cable and chain around trees and pulling myslef out without a winch or come-along, but that got tired long before I got good at it. I fortuantely had a good friend with the same machine, and he brought it out with fresh meats all around, just so I could see if fresh rubber would make the difference, or was I going to be getting a new machine. The minute the lugs loaded up, he was as stuck as I could get, and maybe did it sooner, with the way the new tread tore up the ground faster than my baloney skins.
So- I went hunting up ASV, and since it had been a few years, I was delighted they had improved on the PosiTrak by introducing the RC Series. I ended up buying the smallest RC 30, because a really wanted to keep the trees, and not blow 10-15' wide trails. I had a JD 644 I used to clear the driveway and cabin area, and other 20' wide driving parking trails/spaces and move mountains of dirt, but that thing was 28,000 # and also did not like Gumbo. I kept the Bobcat for a while, but it was just sitting so It got sold.
I would not own another tire-d machine. If ICE is going to be an issue, I think there are counter measures you can live with to get the high floatation and traction in snow and mud or, dirt work. I have driven mine inside buildings, and all over flat concrete, maybe I am just good, but I dont have a bucking bronco issue, ever, not on concrtete or asphalt or in dirt. With tires on short wheelbases, I'm still good, but you can't be in a hurry...