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Tunnel operations and push rod clearance.

Subject: Tunnel operations and push rod clearance.
From: Graham Clarke <gemin@cix.compulink.co.uk>
Date: Thu, 2 May 1996 13:47:04
Builders should note that the final inspection notes issued give a 
mandatory clearance between the main push rod and containment of less 
than 0.1", not the "about 4mm" as shown in the handbook, top of p.10-72a. 
 So if you have the top on, you will have to climb in and replace the 
lower ply and add a mirror image above it. Any serious operation in here 
is virtually impossible through one inspection hole; you need two for 
your hands and one to look through, by which time the fuselage is ready 
to fall apart. I found it necessary to build a platform 21" wide above 
the push rod, passed in through the D. You can only do this if it's side 
supports are less than 7.5 ". You need 9.5" get it above the push rod so 
some extension, added once it is in, is required. Have someone available 
to pass you tools (and maybe pull on your feet out). 

gemin



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