October 16, 2019 – I continued to cut and fit seals for the baffle, and I ran into an issue.
I started cutting the baffle seals. Started with the sides, since they are easy and I can learn the tricks.
The back is pretty straight-forward as well.
I decided to tie the two seals together using the top bolt of the center bracket. Then I trimmed the seals to go around that bracket.
I started the seals around the front baffles that go behind the spinner.
I cut small pieces that will start down the sides on the front baffles.
I took off the lower cowl to do the small seals that seal the lower edges of the inlets to the ramps. I made the retaining strips.
I made the seal strips and started to install them with the retainers per the instructions, using #6 countersunk screws. Well, I pulled a screw right through the fiberglass of the cowl.
So I’ll plan on using small #8 button head screws here.
I went to look at a friend’s inlet seals on his RV-8, and he mentioned a problem he was having getting his upper inlet ramps to seal properly. Ooops. I realized that I hadn’t even installed these ramps on the upper cowl. I somehow thought these might be optional. My DAR told me they were absolutely necessary especially in climb, to smooth the airflow in and over the engine.
I knew I had these ramps, so I took them off the shelf, figured out where and how they fit, and epoxied them into place. I used clecoes to hold them. These holes can easily be filled later.
I’ll go back and trim these ramps to fit, and I’ll have to trim my baffles again to fit the top cowl.