Track diameter needs to take into account ground clearance. May need to push the bogie wheels down an inch or two below the drive/idler wheels to maintain ground clearance and keep drive and idler wheels smaller.
Contemplating two rows of ANSI 100H chain welded to the inside of the track and using a pair of matching sprockets (approx 12 in dia) spaced about 3-4 inches apart. Idlers and bogies run between the chains. Track plates would need guides to keep the track on the sprockets. I need to pick a particular dozer to use as a model so I can start scaling the components.
I just realized today that the 1210 I bought a couple weeks ago has a manual lift, so the hydro may not be ported. Not sure what I was thinking. Might be ported and plugged, but I haven't put eyes on it yet.
Almost got it running today--well it runs on starter fluid anyway. Had to fix the starter Bendix. It's probably been sitting for at least 8 or 9 years. Battery in it was dated 2006. It does have an electric PTO with a 5/8 belt. The electric PTO would allow easy uncoupling from the hydros for starting.
Once I get the fuel system working, I'll know the condition of the engine. It shows 1142 hours on the clock.
I have 4 spare Cub engines, but they are all mechanical PTO engines. 2-10's a 12 and a 14.
At least I have all the parts necessary for running a hydraulic pump off the back side of a hydro. LOL. As Ambush said, "you'll find a use for them on a future project."
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