Ken Gillanders wrote:

Dear Paul,

I have been following your newsletter for the past few months and have
learned a great deal about rotaries, mounts ect. I have sent a mock up
side and front view of my proposed mount for my BD4 project. I was
wondering if you could comment on the design and any suggestions would
be greatly appreciated. I have an earlier model 4 port core that has
been completely rebuild following Tracy's conversion guide and Bruce's
video (which I both highly recommend). I would like to put the pan
below the aluminum bed plate with holes drilled for the baffle.
Question? What are the pros and cons to keeping one rubber mount below
the plate as opposed to sandwhich two rubber mounts on top and bottom
of the plate. With the latter, you would not be welding the top and
bottom support together? My proposed diagram shows the sandwhich
version, just as Tracy's does.

Here is the side view of Ken's mount.
The rear tubes and silicone rubber mounts can be made very small as
there is almost no load on them.

The exhaust would be best coming out the side of the cowling
and use a tangential or tuned muffler design as shown on the 
ACRE NL web site. A tuned intake will be a problem with
those upper mm tubes. You could use the compact style
of tuned intake. Or eliminate the upper tubes as they
are redundant with the rear tube triangles.

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Paul Lamar
 
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