"EXT-Schurr, Larry" wrote:

Paul,
Hello, and thanks for including me in your list.  
I looked at your RV6/questair style mount and have 2 questions.

>From whence did you derive your loads?  They appear credible enough, just
curious.

It is just a guess. I think the FAR's specify the landing gear loads
as 4.5 G and some aerobatics airplanes claim they are stressed to 6 G's
positive so I used that number. The static load on each front mount
was assumed to be 150 pounds. That assumes an engine weight with
accessories of 350 pounds.
 

The 'pan detail' shows an Al tube.  One could only assume this to be 2024,
6061, etc.  It is considered bad practice to sleeve steel adjacent to alum.
Could there be room for an intermediate sleeve? Or 'goop'? or even multiple
surface coatings?  Just didn't know how detailed any other drawings might
call this out.

 
Yes on the coating. I don't recommend this approach any more. Too expensive,
harder to fabricate and complicated. It also assumes you will fabricate
a new pan out of aluminum. I now think the large PSRU/motor plate is the way to go.
 

Good stuff, this list.

 Thanks.
 

My project?  Looking at viablility of 13B in a (highly) modified Mustang2.

Larry

ps.  powder coating has proven to have problems.  "low flow" corners.  but
for most work, it's great.
L.

 
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