Thanks to Peter Bruegemann I can now put a name to the gear I am looking
for. The image of the fitted gear in the 1939 Catalogue is very small. The
spares diagram leaves questions unanswered i.e, how does the tension arm
adjuster work at the control lever end? There are parts with ref,. numbers
on the drawings but then they do not appear in the price list so no
description as to what they are. These are the sort of conundrums I enjoy.
It is a bit like a detective story So the catalogue does not answer all the
questions, so lets hope that I turn up a change fork and another control
lever with the tension arm tension adjuster.
Mark Stevens Evanton Scotland