Hey Broke L345,
I was going thru the storage today and found a bin of some of the old Strong Arm Crank Cups and some bearings, They are NOS from 96' or so, so about 21 years old.
E-mail me if you need them and we can work something out.
And it is a 25.4mm 1" spindle on our old Strong Arms, it is part of what made them so stiff and allowed us to run Aluminum Spindles back in the 90's.
Hope you all have a great day!
Bill