Hi,
please of which year and model is the 3 speed gearbox with the prefix R/10903/189 ?
Greetings
C.
It's difficult to be exact, but from the Register entries, we can say it is likely to be from 1922/23.
I hope that helps!
P.
Thank you Paul.
Yes this helps.
The gearbox now is complete.
I have seen that the wide for fitting the gearbox on the frame is 2 inch.
My other gearbox housings of 1927 and 1929 have a wide of 2 1/4 inch.
Some differents of the gearbox bearing covers also.
The 1922/23 version has small ears for bolts of the clutch mechnism. The 1927 version are stronger at this area.
From 1928 the gearbox bearing covers are wider.
I'm now searching still a gearbox bearing cover of the 1927 narrow gearbox to complete and fitting the gearbox on my TT90.
Best regards
C.
Clearly the three-speed gearboxes need sorting out with some detailed analysis. Perhaps someone with more detailed knowledge (and time) than me can sort it out!
P.