Finishing: Canopy

 

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August 17-19, 2007 (8 hrs):

Popped the fiberglass canopy skirt off the mold (the plane) and trimmed it to size per the tape lines I created in the mold that transferred to the skirts..

The skirt was placed back on the plane and sanded with my orbital sander and 60 grit paper.  I then mixed up some epoxy and milled fiber.  This was squeegee'd on the surface filling some of the low spots.  After everything was dry (overnight), the process was repeated.  I did this three times.
I had heard good things about a fiberglass filler called SuperFil, so I thought I would give it a go.  The stuff gets mixed 2 to 1.  I used my scale to measure the quantities.  When mixed, you get a nice peanut butter consistency.
SuperFil was squeegee'd into the low areas of the canopy skirts.  The next morning  I again sanded with 60 grit.  This stuff sands real nicely.  I think I will use this going forward
I fabricated the interior support bracket for the canopy side skirts.  These get riveted to the inside of the canopy rails and then to the side skirts.   There was a lot of hole drilling and deburring to fabricate these.  I primed these now since it will be hard to get paint on their backside once installed.
The side skirts will be riveted to the canopy frame using the rivet holes I left open.  I made this simple strap duplicator to find where the holes needed to be drilled through the side skirts.
After the primer dried on the support brackets for the side skirts, I match drilled them to the canopy side frames.  The holes in the canopy frame were deburred and the holes in the brackets machine coutersunnk.  The brackets riveted into place with MK-319-BS blind rivets.  I ran out of these rivets before the job was completed, so I will have to order more.
Next I sanded the skirts some more and then applied some primer.  This primer will act as a guide coat.  When I sand it down it will reveal low spots in the skirt that will require more filler.

 

I then spent about 2 hours cleaning up the workshop and garage from all the fiberglass dust.  Man, working with this stuff makes a mess.  Hopefully, once I attach the skirts to the canopy I can move the parts outside when I do the remainder of the fiberglass sanding.

August 24-26, 2007 (8 hrs):

Made the canopy rear slide rail chase that will enter the doghouse and 'hopefully' seal the canopy from air leaks around the slide rail. 

Here you can see the chase.  I am using some steal braid used for hanging pictures as the leash to canopy.  I covered the steal braid in shrink wrap for to protect against scratching the top skins or the canopy fairing.

 
Next I mixed up some epoxy and flox.  This was then applied to the dog house (where the chase will reside with the canopy is closed).  I then installed the fairing back on to the canopy, installed the chase, and closed the canopy so the flox wooud flow around the chase making a nice tight seal.  [ of course, I covered the chase in packaging tape so the epoxy mixture would not stick to it).

 

Here is the flox after it hardened.  Once this dried, I spent a fair bit of time sanding it smooth.  That was then followed by an application of SuperFil and yet some more sanding.

Next, I fabricated a couple of small streamlined handles to attach through the canopy sides skirts and into the canopy frame (at the rear of the canopy).  these will help with getting the canopy.  The sliders canopy needs a slight bit of force to get the backend to climb up the rear slide rail.  Once it is up, everything slides smoothly.  These handles should really help.
Here I am match drilling the holes in the handles to the canopy side frames.
I decided the canopy fairing could use one more squeegee coat of SuperFil.   I cleaned the surface and then used a rag to wipe on a thin coat of epoxy (pictured).  This was then followed by a coat of Superfil
While the SuperFil was setting on the canopy fairing, I masked the inside of the canopy frame in preparation for pain.

 

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