There were no Fine Spline Teeth back then. It was probably due to the cost to machine the part or perhaps the lack of tooling or reliable metal. I have seen these input shafts twist one tooth before breaking.
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Title: Coarse Input Shaft
Description: There were no Fine Spline Teeth back then. It was probably due to the cost to machine the part or perhaps the lack of tooling or reliable metal. I have seen these input shafts twist one tooth before breaking.
