No, it’s not a Belleville washer, although they would do the job I’m sure. It is a double-coil spring washer, flat cross-section, and with both ends bent down so that they don’t chew up either the retaining washer or the groove in the end of the stand. There is a trade name for them, but I can’t find it ! It would really help to have it so that you know what to ask for in the engineer’s merchants…. There is a similar, but smaller washer, on the hand-change lever mounting.
I’m sure that someone reading this will let us know that elusive name. Come on chaps !!
Brian
