Moving Runner Bottom Ducts

We decided to move our combustion air and firewall oil cooler runner ducts from flat bottom-facing duct connections to side exiting ducts. We’re also making the ends permanently attached to the firewall so they are very rigid, as we’d had issues with them pulling the cowl screw out and collapsing. We’re also added a little […]

Overhead Fresh Air Duct & NACAs

Since the premolded engine cooling NACA ducts don’t seem to be covered elsewhere in the manual, I’ll include them here. Much of the cutting was completed during Head Start, though I did cut the overheard fresh air duct at home. Then they’re all fitted up and held in place. The engine naca’s had been set […]

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