15-02-2019, 09:36 AM
I'm pretty sure that, used as a set, the gears will interchange, using the shafts appropriate to the casing. There are some differences to the first motion shaft however (the length was changed at some point, and the length of the splining changed when the clutch plate splined length became longer (1928?)). There were also some changes to the first motion shaft housing, which may cause problems. The very late boxes used an oil scroll at both ends and may be different again.
I guess you'll need to get both gear sets on the bench and carefully compare to see what can be achieved.
I guess you'll need to get both gear sets on the bench and carefully compare to see what can be achieved.