The Murphy Builders Site

I assembled the brake pedals and master cylinders today on the workbench and it appears that, given the lenth of all the parts, the break pedal will angle back (toward the pilot) as the rudder is pushed in. The only way to prevent this is to increase the master cylinder overall length so that the parts form a parallelogram. What are others doing?

Mike

I assembled the brake pedals and master cylinders today on the workbench

Mike



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Some of us moved the bottom cylinder attach point from the rudder pedal
bar to the floor. That stops the pedal from tilting forward as the
rudder is applied. MAM may sell a couple of brackets to do that if you
don't want to make your own. Lots of discussion is probably still in
archives. There are a few reports of limited braking (pedal hits the
firewall) and ground loops from the normal installation.
Ken

Mike Rapoport wrote:

I assembled the brake pedals and master cylinders today on the workbench
and it appears that, given the lenth of all the parts, the break pedal
will angle back (toward the pilot) as the rudder is pushed in. The only
way to prevent this is to increase the master cylinder overall length so
that the parts form a parallelogram. What are others doing?

Mike

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hi mike it dosen't matter that it`s not a parallelogram mine works fine
anyway

bob fisher rebel 342 amphib
----- Original Message -----
From: "Mike Rapoport" <rapopor1@ix.netcom.com>
To: <rebel-builders@dcsol.com>
Sent: Saturday, October 22, 2005 9:30 PM
Subject: Brake pedal geometry

I assembled the brake pedals and master cylinders today on the workbench

and it appears that, given the lenth of all the parts, the break pedal
will
angle back (toward the pilot) as the rudder is pushed in. The only way to
prevent this is to increase the master cylinder overall length so that the
parts form a parallelogram. What are others doing?

Mike



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Thanks Ken! I have the drawings for the brackets to attach the MC to the
floor and that is what I mocked up. My problem is that the pedal tips
*back* as rudder is applied. I will probably put nutplates in the floor so
I can change things around later.

Mike