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Marlins Web Site
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Date: 11-3-2022
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Number of Hours: 5.00
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Manual Reference: OP-40
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Brief Description: Fitting the Front Baffles to the Cowl Inlets
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The first thing I did today was to bend the front air-ramp baffles slightly upward so both ramps were at a level approximately 1/8” below the inboard bottom cowl intake vent openings. This involves placing the bottom cowl in it’s normal, flight-ready configuration, measuring the height the inboard portion of the air-ramp baffles are below the cowl inlet and estimating how much to bend the baffles so they are approximately 1/8” below the inlet. I also marked a main rap angle-bend line at a point from where the outboard air-ramp braces attach to the side baffles to a tangent point on the outboard cowl inlet. The instructions and diagrams were marginally helpful, but after about 10 minutes of lifting and lowering the outboard edges of the air-ramp, I finally guessed at the best “tangent point” and made a triangular “ramp crossing bend line” on both the front air-ramp baffles. Next, it was a matter of removing the starter gear to get the baffles off the engine, making the vertical bends, reattaching the ramps, starter-gear, and cowling to see if the bends were correct. Once I got these bends in the correct position, I repeated the process and bent the triangular ramp crossing bends. After several reiterations, I got all the bends correct so the bottom of the cowl and the front of the air-ramps were correctly aligned.
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One diagram for multiple steps
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Raised air-ramp w/ crossing bend
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Right Air-Ramp Crossing Bend
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