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Kurt Haller RV-9A
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Date:  9-12-2015
Number of Hours:  0.00
Manual Reference:  
Brief Description:  Leveling the upper cowl

This entry written 29 August 2016. Hours not tracked.

Pictures taken after starting to fit cowling, I added/released air to/from one of the main tires to level the fuselage across the cockpit longerons, then used a homemade water level to set the upper cowl's outboard edges level. Bottom cowl will be trimmed to fit the pretty much straight edges of the upper cowl.

The clecos at the back of the cowl are holding the half-hinge and its spacer to the underside of the top firewall flange. The back edge of the top cowl was previously trimmed with a 3/8" piece of plywood setting the gap between the rear of the rear spinner bulkhead and the front of the top cowl. That space is removed in image 1. There is a peg of wood clamped to the baffle bracket at the crankcase parting line to set the height of the cowl at front, while the rear edge of the top cowl rests on the half-hinge.

A few more than 3 contact points determinining the plane here! Despite the parallax in images 2 and 3, the top cowl was level when I started match drilling holes along the rear edge into the other half of the hinge.
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Overall view

Overall view

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Passenger-side edge at water level in the bottle.

Passenger-side edge at water level in the bottle.

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Pilot-side edge at water level in the tygon tube.

Pilot-side edge at water level in the tygon tube.

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