The Murphy Builders Site

Some time back the idea of flush riveting around the door perimeter came up
as desirable for a better seal and less air noise with the door closed.
And Wayne mentioned the precaution that avex flush (CS) rivets are not as
strong as regular dome avex.

I had put in solid flush rivets based on the above, but there are other
factors that come up later in the manual that I thought I'd throw in for
others considering this.

1. the rivets on the front of the door opening are into the door post and
must be blind rivets. So you can't put in solids, and if anywhere you want
shear strength it is on the door post. Therefore you are putting dome avex
here anyway. So maybe this defeats the purpose of putting in flush rivets
to reduce air nose for the whole rest of the door perimeter.

2. If one puts the door perimeter rivets in when MAM says to, they will
have to come out and be redone later when MAM gets you to putting in the
following. (This is noteworthy whether you are using solids or Avex.)
a) the corner braces (quarter round pieces at each corner of the door
opening)
b) the "Ontario Mod" doublers at the top of the front and rear door posts
-- note also on the rear doubler here, IMO it is nice to make it at the
same time as locating and installing the rear wing attach brackets and what
becomes bulkhead G.
c) the side seat belt mounts

-Ben/ 496R



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