It is time to route the brake lines on my ES.  I have heard a number of
opinions on how to do this, but here is what I would like to do:  Route the
low pressure line from the reservoir to a parking brake valve.  From there
it splits and goes to each "inner" master cylinder, the right pedal on the
pilot's side and the left pedal on the co-pilot's side.  The pressure side
of these cylinders are then routed to the upper port of the others.  The
discharge side of the copilot's right pedal goes directly to the right brake
and the discharge of the pilot's left pedal goes to the left brake.  The
advantage of this layout is that it minimizes the length of high pressure
lines.  The disadvantage is that the routing of each pedal is different from
its mate - the pilot's left pedal goes directly to a brake, but the right
pedal has to "push through" the copilot's master cylinder.  Would that
adversely affect the pedal feel?

Another question is about the parking brake.  A single brake valve, as sold
by Aircraft Spruce, can be inserting into the low pressure line from the
reservoir.  Or conversely a dual valve could be installed in the lines to
each brake cylinder.  The single valve seems simpler, but it does convert
the low pressure suction lines into pressure lines.  It also relies on no
leaks in any of the master cylinders.  Any opinions out there?

Gary Casey
ES #157