Model Tech P-47 Thunderbolt Especificações descarregar pdf (Página 52)

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❑ Carefully slide the cowling over the engine and onto the fuselage. The back edge of the cowling (at the top and upper

sides) should overlap the front of the fuselage 1-1/4".

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Depending on the size of the engine you've chosen, you may need to cut away a portion of the cowling to clear the

engine's cylinder head. If so, use a Dremel tool with a cutting disc and a sanding drum to make the cutout. Work slowly,

checking the fit often so you don't remove too much of the cowling or damage it.

❑ With the cowling temporarily in place, slide a propeller onto the engine's crankshaft and secure it into place.

❑ Line up the front of the cowling using the crankshaft and

propeller as your guide. When aligned properly, the front

edge of the cowling should be about 3/16" behind the back

edge of the propeller at both sides and the top and bottom.

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Position the propeller both vertically and horizontally to

check for the proper gap. This will ensure the front of the

cowling is square to the propeller.

❑ When satisfied with the alignment, use pieces of masking tape to hold the cowling securely in place.

Step 3: Mounting the Cowling

❑ Using a ruler and a pencil, carefully measure and mark

the locations of the four cowl mounting screws.

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To make it easier to find the center of the mounting

blocks, first remove the cowling and draw a line from the

center of each block onto the fuselage.

❑ Carefully drill a 5/64" pilot hole into the cowling and

through the cowl mounting block at each of the four locations

you marked.

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Make sure the cowling is held securely in place so it

doesn't move while you are drilling the pilot holes.

❑ After drilling the pilot holes, remove the cowling and use a 1/8" drill bit to enlarge only the four holes in the cowling.

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Enlarging the holes in the cowling will prevent the mounting screws from cracking the fiberglass.

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Model Tech P-47 Thunderbolt Especificações Página 52