What make of bike? M20? I've seen a couple of different styles of hinged M20 petrol cap, but never a different hinge position. But like Lex, have seen it on Norton's Ron

email (option): ronpier@talk21.com

For M20/21s AA tanks have the hinge on the side rather than 'fore and aft'...One difference is they have the smaller cap (oil tank size)...

In other respects they are the same as the non cut off WD tank so have twin taps and no 'joining pipe' underneath at the front...Ian

email (option): ian@wright52.plus.com

My apologies, yes I meant the fuel cap on an M20. I have a 1942 with the balloon tank which is hinged from the front. I recently acquired another tank, which I believe is the standard M20 tank (without the cut-out) which is hinged from the rear. Looking through various photos both on this site and on the net, there seems to be a variation on whether the hinge is on the front or the back of the cap, but no indication of a reason why.

Hope this explains my query better

Cheers

email (option): knuckplucker31@internode.on.net