Jerry Hey wrote:

  A fixture for boring the housings  has been built and we  have tried
it out on a 12-A housing.  Seems  o.k.      Also,   have  a good
start on the insert.      Any comments, criticisms at this stage
would be most appreciated.

   The largest part of the insert is where the butterfly will be.  The
extra wall thickness  is for the  butterfly shaft bushings.  The
width of this can be cut down considerably from 1.250 to .5 inches.
The outboard end is 2" o.d. and internally tapers from 1.75 i.d down
to 1.5 i.d. for the butterfly.  The part sticking through the housing
will be trimmed to a flush fit and squared up but I don't want to to
do that until we are working on a 13B housing as the insert will
penetrate that housing deeper.
--
Jerry Hey

Tailwind & Rotary Engine Support

http://www.j-winddesigns.com

mailto:j-winddesigns@thegrid.net

Jerry,
Looks great.  It's wonderful to see the neat things you can build if you have a machine shop (and know how to use it!).  Sign me up for a time slot to modify my 13B housings.  Why not use a 1.75 diameter butterfly?  Will this be an option?

Ken Powell

 
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