The Murphy Builders Site

MAM has a jig to reweld the outlets to fit their cowling - then they fit well. I have heat muffs for both sides the left side from a CJ or other Yak I believe.
Steve Rhodes
Moose 173

----- Original Message -----
From: RJBWoodman@aol.com
Date: Thursday, May 22, 2003 4:09 am
Subject: Russian Exhaust

The following things have been brought to my attention concerning
the
russian exhaust for the M-14 radial. 1) built from .035 304
stainless that i
have been told won't hold up for very long, heat will deteriorate
it fast 2)
Is not designed for our Murphy cowl and does not fit the exhaust
outlets
moulded into the cowl 3) Not near enough heat produced from the
heat muff
for cabin heat in northern conditions. Can anyone confirm or
negate any of
the above potential problems. Should it be built from 301
stainless ?
Randy Bowers and Don Boardman Moose 130



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The following things have been brought to my attention concerning the
russian exhaust for the M-14 radial. 1) built from .035 304 stainless that i
have been told won't hold up for very long, heat will deteriorate it fast 2)
Is not designed for our Murphy cowl and does not fit the exhaust outlets
moulded into the cowl 3) Not near enough heat produced from the heat muff
for cabin heat in northern conditions. Can anyone confirm or negate any of
the above potential problems. Should it be built from 301 stainless ?
Randy Bowers and Don Boardman Moose 130



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Randy,

We offer a Moose Exhaust designed specifically for the Moose cowling. It has
dual heat muffs on it for "non-south" flying and is made of 321 stainless
steel tubing using American radial engine style joints rather than the leaky
clamps. Set includes a new gasket set as well. Price is ******(email me off
the list for pricing). Deliveries are on going with nearly all backordered
systems shipped at this time. Lead time is 2-4 weeks ARO. This system is a
development form the Model 12 system we created and provide to our model 12
builders.


Sincerely,

Kevin Kimball, VP Engineering
Jim Kimball Enterprises, Inc.
PO Box 849, 5354Cemetery Rd.
Zellwood,FL 32798
407-889-3451 ph, 407-889-7168 fax
www.jimkimballenterprises.com



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Moose builders,
I recently learned that Gary Green (Formerly Aircraft Exhaust systems ) is
now offering a dual heat muff exhaust system for the Moose. He is also a
builder. He is also working on an air cleaner system for the Moose. He can
be reached at 304-763-2637. Gesoco continues to offer the standard Yak
systems and Kimball Enterprises offers a dual muff system as well.
George Coy SR154




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Randy,
As you know the Yaks have been using the system for years. The biggest
problems are loose nuts where the system attaches to the cylinders. I have
never seen any evidence of cracking except where things were loose. I know
of many systems with hundreds of hours on them. The Russian clamping system
connecting the segments needs to be checked regularly. The "old style
clamps" often rusted through after years of activity. The new style clamps
have not seemed to do this. Many of the Yaks and Sukhois had a titanium
exhaust system. This was more prone to cracking and difficult to make weld
repairs.
George Coy SR154
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
RJBWoodman@aol.com
Sent: Thursday, May 22, 2003 8:10 AM
To: murphy-rebel@dcsol.com
Subject: Russian Exhaust

The following things have been brought to my attention concerning the
russian exhaust for the M-14 radial. 1) built from .035 304 stainless that
i
have been told won't hold up for very long, heat will deteriorate it fast
2)
Is not designed for our Murphy cowl and does not fit the exhaust outlets
moulded into the cowl 3) Not near enough heat produced from the heat muff
for cabin heat in northern conditions. Can anyone confirm or negate any of
the above potential problems. Should it be built from 301 stainless ?
Randy Bowers and Don Boardman Moose 130



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