Likewise I thought they were made that way with the slope on them, could I ask one more favour, on the new one could you measure A and B in the image below?
Can they be welded and tempered insitu or is it a strip dpwn job
Cheers
View attachment 121383
Hello Shaun, I have 10.00 mm for A and 14.00 mm for B.
No, you have to strip the gearbox to do this kind of job (adding metal through MIG/TIG)
These shaped shafts brought some vehement talks at my club...Some saying that they saw gearboxes with these shaped shafts (45° cut) but not everytime when new other not....
From my side, new gearboxes I saw were unshaped.
If we give credits to everybody, and from a technical point of view, the V shape, whatever its origin (worn or manufactured) allows a diagonal move of the finger. From the basic driver point of view, it makes things easier to shift, from the gearbox view, it introduces lack of precision as the contact surface is smaller. The "no shape" needs the driver to make a straight H pattern to shift but makes the gearbox more precise.
Also, as there is no axial guide for the finger in the UN1 conception, if shaped , the finger can place itself partially on the shape wich is wrong as the travel of the shaft will not be the one necessary to move correctly the shift sleeve on hub.
Personnaly, all the gearboxes I built or rebuilt (UN1/UN5) went out of my bench with the "no shape" and I would recommend this for the use we have of these in our GTs.
Best regards