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Specification for spindle diameter?
Posted: Wed Jul 02, 2025 1:42 pm
by frank_w
More precisely, the diameter of the machined surface where the inner wheel bearing sits. I bought two used spindles from one of the suppliers, since mine were abused (strawberried) with a center punch. The left one measures 1.190" which as far as I know is how it should be. The right one measures 1.188". Is it still good to go? Should I look for a better one?
Re: Specification for spindle diameter?
Posted: Wed Jul 02, 2025 7:10 pm
by John E. Guitar
These are the values I came up with when I looked into it a few years back. I don't know if these match the factory print.
In hindsight it would have been easier to contact the Benson Research Centre and asked for the drawing.
Re: Specification for spindle diameter?
Posted: Thu Jul 03, 2025 1:22 am
by TRDxB2
Drawing (can't see much) of 1 piece spindle. Discussion indicates 1906-1927 same diameter but a bit longer surface for roller bearings
https://mtfca.com/discus/messages/41194 ... 1391298332
Re: Specification for spindle diameter?
Posted: Thu Jul 03, 2025 6:57 am
by frank_w
Ok, so the drawing says 1.189 - 1.190 which would also conform to the 30.210 - 30.226mm measurements. I'll see if I can find someone to build up some material on the spindle and machine it back to spec. Thanks a lot for your help!
Re: Specification for spindle diameter?
Posted: Thu Jul 03, 2025 8:30 am
by John E. Guitar
That’s what I ended up doing. I had mine metal sprayed and then ground to size.