I have a recollection that someone clever (possibly Paul Bonewell) redesigned the "ball" part of the pressure relief valve to work better with a gear type pump/pressure fed crank. Memory tells me that it used a mushroom shaped replacement for the ball. I'm certain that I've got one somewhere but can I find it?
Does anyone have a photo or sketch of what the part looks like so that I can make a replacement?
Thanks
Charles
Does anyone have a photo or sketch of what the part looks like so that I can make a replacement?
Thanks
Charles