I started working on the firewall. Since I'm not yet sure about what engine I'll use or what I really need firewall-forward, I'm being conservative on which steps to undertake now.
The first step is assembling the main firewall parts and final-drilling them:
Main firewall parts clecoed and final-drilled
To prepare the firewall recess, the manual suggests dimpling certain holes with a rivet + female dimple die - I did just that, and sure enough, the dimple die was then firmly secured to the recess :p I had to drill out the rivet to actually remove it from the die:
The recess dimpled holes weren't supposed to be attached permanently to the dimple die
Finally, I match-drilled the forward fuselage rib and its parts, then attached them to the firewall bulkhead:
Fuselage ribs and related parts
Firewall with main fuselage ribs attached
Next I need to dimple all the holes on the firewall bulkhead and counter-sink the matching part holes. I also want to research stainless-steel rivets to use on the firewall, and I'm thinking of following the advice of many threads on VAF regarding fire protection, where they use steel foil with fiberflax on the forward side.
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