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20050213 - allegro - 03 - centerbottomsheet
20050213-allegro-03-centerbottomsheet: Using the 1/16" x 3" x 36" sheet, I cut the sheeting to the rough form of bottom of the wing. Considering the relatively shallow curve of the bottom of the wing,...
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20050213 - allegro - 04 - bottomsheetdone
20050213-allegro-04-bottomsheetdone: Done and trimmed! 20050213-allegro-04-bottomsheetdone: Done and trimmed!
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20050214 - allegro - 01 - beambottomhole
20050214-allegro-01-beambottomhole: Using a piece of scrap hardwood as backing material, I drilled a hole through the bottom sheeting. 20050214-allegro-01-beambottomhole: Using a piece of scrap...
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20050214 - allegro - 02 - filletstrip
20050214-allegro-02-filletstrip: To make the bottom sheeting fillets, I again used my little 45-degree blade jig on a piece of 3/16" thick balsa. Slice off the first triangular piece, and then use a...
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20050214 - allegro - 03 - filletstripsdone
20050214-allegro-03-filletstripsdone: Here are my fillet strips. I made much more than I needed. I cut my fillets by holding them over the bay I was cutting them for, nicking the balsa and then...
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20050214 - allegro - 04 - gluefillet
20050214-allegro-04-gluefillet: To glue the fillets, I used a cheap brush and Titebond, coating the area that I would be bonding the fillet to with glue. 20050214-allegro-04-gluefillet: To glue the...
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20050214 - allegro - 05 - pushfillet
20050214-allegro-05-pushfillet: Using the blunt end of a hobby knife, I pushed the fillets into place. Be sure not to bow the sheeting below the spar here. 20050214-allegro-05-pushfillet: Using the...
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20050214 - allegro - 06 - sandtopinnerle
20050214-allegro-06-sandtopinnerle: To sand the top inner LE bevel, I covered the ribs in a layer of packing tape and used the ribs as a guide when I sanded with my T-bar....
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20050214 - allegro - 07 - sheetingmark
20050214-allegro-07-sheetingmark: The top sheeting is made from 1/16" x 4" x 36" balsa, and is cut into left and right pieces. I drew a centerline down the bolt beam and marked the balsa, cutting it...
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20050214 - allegro - 08 - sheetingmark2
20050214-allegro-08-sheetingmark2: To mark the sheeting, I laid the sheeting on top of the wing, tacking in place with masking tape to make the "hinge" like I did before on the bottom sheeting. Then,...
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20050214 - allegro - 09 - readytoglue
20050214-allegro-09-readytoglue: Again, to glue I used Titebond (thinned if necessary) and made a hinge out of packing tape to ensure the aft edge of the sheeting lined up nicely with for edge of the...
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20050214 - allegro - 10 - sheetingsetup
20050214-allegro-10-sheetingsetup: I did one half of the sheeting at a time, mostly because I didn't have enough weights to ensure weights to get proper adhesion to the top of the inner LE strip. To...
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20050214 - allegro - 11 - supportstripcut
20050214-allegro-11-supportstripcut: The support strips are made from 3/32" balsa cut into strips and laid between the ribs flush with the aft edge of the spoiler tray. Butter each side of the strip...
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20050214 - allegro - 12 - titebondfillet
20050214-allegro-12-titebondfillet: Just to make sure, I went back and scraped up the extra Titebond and used it to make Titebond "fillets" around the support strips. Using the flat side of a small...
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20050214 - allegro - 13 - almostdone
20050214-allegro-13-almostdone: After I did the other side with sheeting and support strips, I was able to put the wing together for the first time! Awesome! I still need to do the outer LE on the...
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20050214 - allegro - 14 - longspan
20050214-allegro-14-longspan: A shot of the wing in long-span style. 20050214-allegro-14-longspan: A shot of the wing in long-span style.
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20050214 - allegro - 15 - jointoops
20050214-allegro-15-jointoops: This is the right side of my wing. Note the gap between the TE. I believe this is because either my lay-up shifted on the end-rib of my mid-panel, or perhaps there was...
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20050214 - allegro - 16 - leftjointoops
20050214-allegro-16-leftjointoops: Essentially the same thing happened here... 20050214-allegro-16-leftjointoops: Essentially the same thing happened here...
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20050217 - allegro - 01 - outerle
20050217-allegro-01-outerle: To bond the outer LE to the center panel, I used Titebond to keep the 3/32" thick pieces of hard balsa in place. Masking tape to keep it all together....
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20050218 - allegro - 01 - bottomlesand
20050218-allegro-01-bottomlesand: Since I hadn't sanded the bottom of the leading-edge before adhering it like Drela recommends, I did it while it was on the panel. With the panel upside-down, I...
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