Hi Chris,
I have recently done this. See my notes in your message.
----- Original Message -----
From: Dr. Christoph Both <christoph.both@acadiau.ca>
Subject: Glueing in fuel tank: which layer of three first?
> Hi:
>
> I am about to glue in the fuel tank. However, the manual specifies
> that the layup#1 bracket to be formed uses some "temporary" foam
> to fill the distance between the tank saddle and the cockpit module
> so the layup would be smoothly guided onto the tank itself. HOW
> CAN THE FOAM BE REMOVED AFTER THE BRACKET HAS
> HARDENED AS I UNDERSTAND IT IS FIRMLY GLUED TO THE
> TANK (which I supposed cannot be removed after this layup?
I used a piece of blue foam that I shaped to size and then wrapped the whole
thing in cling wrap. It slid out easily.
>
> Latup#1 also requires a "T" formed bracket creeping under the wing
> spar mounting area by up to 5 centimeters. Considerably
> thickening the area it would push the spar up a few milimeters or
> so and there is a danger of the top spar now colliding with the
> aileron quick connect bracket bellcrank. Would an "L" shape of
> such a bracket be sufficient?
>
This not a probelm in practice. The metal bushes in the spar, along with
the ones in the cockpit module are slightly proud of the surface, the
combined effect is to space the spar out a tiny bit from the back of the
cockpit module.
> Finally, for this entire layup, especially #1, do I need to remove
> none, one or both Aileron brackets CS 14 to even get into this tight
> area for the layup? Have some folks even removed the entire CS-10
> elevator torque tube to have sufficient place to work with?
>
I removed everything, it didn't take long and it makes the job easier.
> Your immediate help is appreciated. Please let me know, those of
> you who have done it, so I can start to work!
>
Take a look at my constuction diary at
http://pma.obtero.net/feb-00.html
under Saturday 19. It might help a bit.
> I also found only one Ply-5 12-millimeter plywood piece in my kit. It
> is a 4x4 inch square and I assume to be used to make the fuel
> tank spacer. Is it cut in half or am I missing a piece? And, where is
> an additional 12-millimeter plywood piece supposed to be used to
> make the basis to fix the fuel tank selector valve od, and to make
> both wing pin latches as well? Does it come with the kit, or only
> with stage 4?
The fuel selector valve mounts directly to the cockpit module. You will
find a hard point embedded in the glass. The wing pin bushes are put in to
the thinner ply supplied.
>
> Christoph #223, Wolfville, Nova Scotia, Canada
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