Work continued on the top cowl propeller hub fairing. Four layers of fiberglass were added with West System Epoxy. A peal ply was added to help removed excess epoxy.
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| Fiberglass added with peal ply on top |
Once the fiberglass cured the top cowl was sanded to get a good transition to the top cowl. Since the surface had some pin holes and imperfections a layer of micro (micro-balloons and epoxy) was applied to the surface. Once the micro cured a good sanding was done to get the final shape. A layer of sanding/filler primer was applied and then the top cowl was sanded with 400 grit sandpaper. Additional cleanup work will be done during the final preparations for paint.
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| Top Cowl with Prop hub fairing |
The top of the firewall is sealed to the boot cowl with a silicone fiberglass baffle seal. A backer plate for the rivets was made from 0.025 aluminum. Pilot holes were first drilled in the backer plate and then the backer plate was clamped on the firewall and the holes were match drilled to the final 1/8" rivet size. Once the baffle seal arrives from Aircraft Spruce it will be cut to size, holes punched, and finally riveted to the firewall.
Hours: 12
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| Rivet Backer Plate for Boot Cowl Baffle |
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| Holes in Firewall for Boot Cowl Baffle. |
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