Quote:
Originally Posted by sawdustdad
The drive sprockets are much smaller than the 23 inch tires, so that provides some reduction. I'm guessing they might be 8 or 10 inch dia, providing a 2.5:1 or 3:1 reduction. That would give a top speed of 3-4 mph? Of course, the hydros are infinitely variable speed.
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School me on this a bit please. Do you figure the diameter of the drive sprocket or the outside diameter of the track at the sprocket? Back in the early 70’s when GM owned Terex I worked at the Hudson plant in Ohio as a welder. We actually built our own drive cases and had gear hobs to make our own gears. We had a horizontal broach that was 12 ft long that we broached the inside splines on the spindles. The floor would shake when it pressed the broach tool. Anyway I digress. My point was I was around some pretty neat machines back then but unfortunately I don’t have any experience with the track system of the crawlers.