[Mgs] Fw: MGB rear brakes

[Paul Hunt]

The pressure *does* equalise in the MGB master cylinder.  The pedal pushes on
the first stage of the piston, that pushes on the fluid for the primary
circuit (front brakes) which pushes on the second stage of the piston, which
pushes on the fluid of the secondary circuit (rear brakes).  There is a spring
keeping the two sections of the piston apart.  It is not until both circuits
have taken up all the free play that either circuit starts developing any
pressure, which means that the pressure in both circuits is equal - under
normal circumstances.

PaulH.
  ----- Original Message -----


  But in a dual master cylinder system, it is possible to meet resistance in
  one circuit before reaching that point in the other circuit (for example,
in
  the case of a failed hose in one circuit). The pressure does NOT equalize
  between the completely independent circuits.