Here's what I've learned about track belts in the past few weeks.
I'm told that the original belting on a Thiokol Imp is Goodyear Plylon and on my Imp it is 3-ply and about 1/4" thick. Plylon comes in two flavors -- plain ol'
Plylon and
Plylon Plus.
Vendors seem to quote either "3-ply 600#" or "2-ply 220#" belts. Plylon Plus 600/3 matches the heavier belt's numbers and is 0.251" thick, so that is probably the original belt. The lighter-weigh belt appears to be Plylon 220/2 and is only 0.120" thick.
There's no clear consensus on which belt to use for a light cat such as an Imp. Some vendors prefer the 3-ply and will reluctantly sell the other, while others prefer the 2-ply and say that the heavier belt is over-kill.
I received quotes from four different "snowcat" companies that all offered the above two belts:
- FallLine Corporation, www.fallline.com, Chris Kahl, chris@fallline.com, 800.325.5463
- Mountain Services Group (formerly Okner's Supply Co), www.mountainservicesgroup.com, Joe Suman, office@mountainservicesgroup.com, 800.294.3579
- RV Specialties, www.snowcattracks.com, Kevin Smith, litefootsnowcats@aol.com, 801.355.4172
- Minnesota Outdoors, www.mn-outdoors.com, PM Boggie on the Forum
The costs vary slightly from place to place, but it is typically just under $500/belt (drilled) for the 3-ply and $300 to $400 for the 2-ply. You can save $50 to $100 per belt if you drill them yourself.
Vendors can turn the belts around in about a week and shipping runs roughly $100 for four belts (i.e., what I'd need for an Imp).
Some people have reported good experiences with generic "non-snowcat" belt suppliers. I contacted the following two:
I never heard back from Capital Rubber, but Bert from International Belt was very responsive and helpful. Strangely enough, Bert didn't seem to have access to the same Plylon as the snowcat folks and instead quoted a belt that was "just as good", but was 7/16" thick. It was still 3-ply 600#, but had a thicker cover over the top. His price was amazing -- $230/belt drilled -- but I wasn't comfortable going with such a thick belt.
Part of my reluctance to use such a thick belt is that I'm planning to join the tracks with an overlap rather than fasteners. Again, there doesn't seem to be wide agreement on which approach is best -- both seem to work and some folks prefer one over the other. On my own cat the original fasteners have long ago given way and are now backed up with patches, so I figure I'll save myself the trouble of changing in the future and start with an overlap from the get-go.
I haven't pulled the trigger and actually ordered anything yet, but I'm probably going to go with the 3-ply belt from the Mountain Services Group. Apparently they're having some kind of "spring maintenance" sale in May that might save me a couple bucks.
Thanks again for all your help and comments -- I appreciate being able to poll the collective wisdom of the group.
Ron