Originally Posted by
grant40
I think you just don't understand what I'm talking about because I'm talking about the ridges that hold the bearings in and the distance between them.
That’s not what you measure for spindle length. For a square taper, you measure from one end of the spindle to the other. I think you are also measuring the distance of the central section incorrectly. From the outer edge of each ridge, most every spindle I can find measures 52mm. There is one that goes in a 70mm bottom bracket shell that measures 55mm. Check Sheldon Brown’s page
on bottom brackets.