Jerry Hey wrote:

 > > > >

 > > Just when I thought I was getting my choices for engine mounting
 narrowed down, someone comes up with another alternative. My main concern
 with Jerry's solution is the width although I like it otherwise. The
 firewall mounting points on a LongEZ are close together because of the
 narrow fuselage. I don't think it is a good idea to have the mounting points
 on the engine end wider than those on the firewall. I have been looking at
 the Fred Breese sandwich mounting system (Conversion Concepts) which I think
 is a take-off from what Tracy Crook uses in the RV/Otter. Does anyone have
 any experience indicating whether there has actually been any oil leakage
 problems with the double seal?

  George, if you go ahead with your design, could you provide alternative
 widths for the main attach points? Wide for the wide cowlings and improved
 vibration charactaristics, and narrow for those of us that don't have any
 choice but to be narrow. I like the one-piece idea. How soon do you think

 > something will be ready?
 > > >
 > > > Dick Gregory
 > > > LongEZ N613NC

What is the width of the  Long EZ firewall attach points?  The MMP on
my TW is only 20 inches wide.
--
Jerry Hey

Tailwind & Rotary Engine Support

http://www.j-winddesigns.com

mailto:j-winddesigns@thegrid.net

I don't have the exact numbers in my head and I am 1600 miles away from my airplane right now. I work in Los angeles and get home to Houston about once a month to work on it. Judging from the drawing of Perry's firewall it looks like the hard points are about 16 inches apart. But looking at his drawing gave me another idea. He put new mounting points at the bottom of the firewall. Why couldn't I do the same at the back of the strakes to provide a wider base for more lateral stability. That should compensate for the firewall attach points being narrower than the engine attach points. How would one go about attaching a brace to the back of the strake? Any suggestions will be appreciated.

Dick Gregory
LongEZ N613NC

Yes Dick that will work great. Bond on a large area pad with two thick
fiberglass flanges to the spar flange. Ten layers of bid minimum.

Paul Lamar
 
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