Tracks

[Perry Kitson]

Just a quick question,
I have a couple of NOS track links kicking around and the pin holes don't bear any machining marks. I have read that the track links were cast with cores in where the pins holes are and not machined. Hence the policy of removing one or two links after a short initial run-in of new track once the fine pebbled surface in the holes was worn off. If this is true, it would eliminate the need and expense for drilling the pin holes. I believe there was a fair bit of clearance between the pin and hole to allow the track to warp during the initial steering phase. I am not entirely certain, a foundry would tell you for sure, but I think those tolerances should be able to be held with the casting process itself.

Perry