Any one know of a supplier of the rubber twist grip covers, seen on war time photoes of bikes, I thougt DIAL patterns of ashford kent did them, but cant track them down to ask, Andrew.h.
Aahh, the contraceptives!! well they're full of holes I can tell you, but I'll bring some to Malvern, even early 16H's had them, have photographical evidence now!
Here are DIAL patterns, but they never answer emails if the order is below 200 quid!!
They appear in most (but not all) BEF era photographs of Nortons.
Refering to the Norton Parts Lists, they were certainly included as part no. 3971 - 'Rubber for Twist Grip Control Body' in the 'Important' supplementary list at the front from at least Contract C5109 (commencing W1000) which was the first wartime contract in late 1939 and they were still listed up to and including C9062 (W44893)which takes us to the middle of 1941.
These changes generally took a while to be reflected in the lists so I'd suspect Mid-1939 to Early 1941 dates.
I rather suspect that W27680 should have one !
I have no idea if they appear in the lists of other manufacturers.
I bought one from Lex for my 16H which I completely f*cked up whilst trying to fit it. Lex very kindly gave me another one which I am now frightened to fit. I imagine they must be a right bastard if you have to replace the throttle cable on the road side. Ron