Well, mod 78 progresses. I keep hearing the phrase "if it ain't broke, don't fix
it" over and over in my head. The spars are complete except for post cure and
the setting of the bushings in the wing. It says to open the holes up to 7/8
inch for the bushes. They are a fairly tight fit. I think there should be some
slop in there to allow resetting of the dihedral.
The spar is as thin as I could make it. Yesterday was the trial fit of the left
wing. Nothing has changed except for the spar dimensions, so it should go right
in. It does..except for the last 1/8 inch. Frustrating.
I've replaced the top air brake bracket screws with flush and it looks like the
added BID that is in the upper corner of the tunnel has some high points that
are contacting the spar and preventing the aft pin on the fuselage side from
going all the way in, due to the spar not being quite all the way forward. I
hope
so, because I don't know what else it could be. The difficulty is that it
is difficult to see what is going on in the tunnel and the wing root fairings
prevent seeing what is going on with the sockets - especially the forward one.
Not looking forward to reaching in there and sanding and sanding and sanding.
I'll attach pictures. Any words of wisdom would be greatly appreciated.
I do have an oven setup for post cure, however. Using foam panels and a
thermostatically
controlled heater, I am able to maintain a range of 120 to 125F. That
is measured by a meat thermometer at spar level in the box. It can also ramp
up the temperature like prescribed.
If it ain't broke, don't fix it!
Dave A227
Mini U2
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=413647#413647
Attachments:
http://forums.matronics.com//files/post_cure_setup_160.jpg
http://forums.matronics.com//files/socket_not_in_645.jpg
http://forums.matronics.com//files/hump_192.jpg
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