Scott's comments:
This is the first and only sketch I made, of a stud for track lugs in 1995. It had a traditional stud profile. I realized the head height/thread ratio was a significant concern functionally. The shorter lug heights back then were .75 and .88 meant the threads could not be taller than the head are long and still stay in. The biggest challenge was getting enough carbide on the head to maintain control over thousands of miles without damaging the lugs. Doming carbide chips in the head of the screw allowed me to match the amount of carbide that push through studs have and maintain only a 1/4" domed profile. The multiple layers of carbide chips wear down exposing new points and edges, providing excellent control for thousands of miles because they sratch the surface as the carbide dome wears down. |
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