Can any of the perfectionist on the WD M20 advise what they originally had for oil lines between tank and engine. Mine has flexible lines with crimped fitting both ends that screw onto threads with flared sealing. My oil lines are quite old and I am thinking maybe I should replace them. I have seen on post war models they had steel pipes with a short rubber connector. Thanks.
Pre-war and early war BSA used full rubber oil lines while the later war BSA's had copper pipes with rubber connectors. The brass ferrules are not original.
Thirty years ago I got some stainless steel braided teflon lined oil lines made up with slip joints at either end so so they are a doddle to remove & replace.
Only place the bike does not leak.
Against the allow the now quite dull braid is invisible.
I bought NOS oil pipes from Russell Motors years ago and the rubber connectors were fitted with a brass ferrule at one end and a pipe clamp at the other...I've come across this type many times...So, as usual, there seems to be more than one answer!....Ian