Cr gearbox

[Ian Williams]

A word of warning when fitting a set of CR gears into a 4 speed gearbox. I have done a number of these over the years and in almost every case I have found the bore of the 1st motion shaft where the spigot bearing runs has required attention. It would appear that when the new gear is shrunk onto the shaft it compresses the spigot housing resulting in an internal taper and a binding bearing. I correct this with a tool post mounted grinder in my lathe, but I imagine most will not have access to one of these these so will need to farm the job out.