Folks I disassembled my Great Plains master cylinders today. There are no relief ports or valves anywhere and no resevoirs. It is a simple plunger/o-ring with an internal spring to return it to its fully out position. If completely filled and bled, there is no room for heat expansion thus the slave must move out and lock on the disk. Cylinder orientation becomes irrelevant.
So, either one must find a fluid that doesn't expand at all under heat, or the system must be under filled so that the master plunger can still move out if needed. I'm suggesting about 1/8" should be enough play.Full plunger movement is about 5/8" but is limited by the smaller distance that the pad moves. Problem is that the space will inevitably fill with air leading to diminished brake effectiveness. Can't see any other solution short of a redesign however, any other ideas? John Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA ph: 61 2 66584767 mobile: 0417584767 email: johnja...@optusnet.com.au web: www.members.optusnet.com.au/johnjanet/Martindale.htm
