> Robert Leclercq wrote:
     > >
     > > Paul
     > > Do you have the dimensions for the Hatch 4 bolt exhaust flange

modification?

     > Stud size, hole pattern, and thread depth?
     > > regards, Robert
     >
     > You are on your own. I have no drawings. I got pictures some

place.

     > I'll dig them up. Here is one.
     >
     > Paul Lamar

            Paul and Robert,

                 If I remember correctly Richard Sohn made  a jig

utilizing the stock exhaust

     studs to position the jig to modify his one rotor engine to the

"Hatch Type" four

     bolt exhaust flange .



     Kelly Troyer

Here is a picture of the exhaust/intake on the one rotor.
I do not have a pattern since I did the drilling on the mill. Also, this is
the 12A housing. There is a little more space on the 13B. IMHO ther is
enough material for the studs, as long as you don't hang something like the
stock exh-port on it. The flansh is 1/4" SS, and the bolts are 8mm.

Richard Sohn
N-2071U
unicorn@gdsys.net

 
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