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Zenith CruZer & Sonex Logs
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Date: 4-9-2011
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Number of Hours: 2.90
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Manual Reference: SNX-P13
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Brief Description: Right Side Cowl Centerline Trimming
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Lots of time, little textually to say about it.
Started off by setting up my newly acquired laser line level in order to mark the centerline of the upper cowl for trimming. The laser is set up to "connect" the centerline of the turtledeck formers and the centerline of the prop hub. Once properly aligned, I then marked the line with a sharpie. Lots of trial and error here getting the laser aligned.
Once that was done, I had to reposition the laser to mark the bottom side of the cowl - same way. This seemed to take more to get it aligned properly. Not as much had to be trimmed off the bottom.
Removed the cowl half and trimmed with a cutoff wheel in my dremel.
I then remounted the cowl half and marked the bottom rear edge for where it meets the lower firewall. Marked, removed the cowl, then trimmed. Remounted the cowl half.
At this point it's time to drill for the lower hinge similar to the side hinge done earlier this week. I then thought that I would not want to install the full-length hinge pin on this lower side, since the cowl must be trimmed again for the exhaust / cooling air vent. So I removed the cowl, marked, and cut the required opening. I then measured and cut two 6.5" hinge pins. When I tried to install them, it was obvious that I still need to make the full-length pins, even though part of the way there will only be one hinge half. This is because the "install gap" between the lower hinge halves remains in the center of the fuselage.
At this point, I need 1-2 more hands to help hold things, as well as a thin, bright light to shine through the hinge and fiberglass to allow me to drill accurate holes to hold the hinge. Stopped for the night.
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Laser Line Barely Visible
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Cowl Exhaust Exit Trimmed
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