5 hours
I still have the cowl and wheel pants at home, and there were a few little jobs I wanted to get done before taking them to the airport.
On the upper cowl, I still needed to add some kind of air exit for the turbo cooler. I went with these two little NACA vents from Aircraft Spruce. I just mounted them backwards so they don't act like scoops in flight.
I glued them to the inside of the cowl with JB Weld plastic epoxy.
After a bunch of trimming, sanding, a little filler, and more sanding, they look decent enough.
I also finally filled the holes I drilled way back when I initially fit the cowl to the prop hub.
This is the filler I used. It's like Bondo except it weighs almost nothing!
I have read that it helps engine cooling to smooth out the air inlet on the front of the cowl. I already had the filler out so I figured I might as well try to improve these inlets while I was at it. It ended up taking three applications with a bunch of sanding in between, but now the inlets have nice little ramps instead of abrupt entrances.
I also used some filler to smoothen the parting lines on the wheel pants, and cover the couple erroneous holes I drilled when I fit them to the landing gear.
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