3DHobbyShop.com Yak 54 Manuale di montaggio - Pagina 13

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Your Yak kit includes a scale cowl baffle, it is attached to the cowl (if desired) with glue (we use thick CA,

epoxy also works well). Align the baffle with the cowl, and use tape as shown to hold it in-place for gluing

from the back side.

The baffle cuts almost all cooling airflow off. This would be acceptable on only a very cold day. For flying

in moderate to warm conditions, we suggest cutting away approximate 25% of the baffle to allow cooling

air to enter the airplane. For hot conditions, over 90 degF, please remove the baffle entirely.

The cowl is mounted onto the fuselage with 4 wood screws. These screws go into the small plywood

squares on the front inside of the fuselage. Soak these squares in thin CA glue to harden them before

proceeding.

The following procedure is helpful to be sure the wood screws hit the plywood squares.

First, make small holes into the plywood squares through the covering, with the cowl and canopy off.

Tape small pieces of paper over these holes, as shown, and mark the hole locations on these pieces of

paper.

Install the canopy hatch (if the canopy hatch is not installed when you fit the cowl, it may be

impossible to fit the canopy hatch after the cowl is installed!).

When you are satisfied with the cowl fit, tape the cowl to the fuselage with masking tape. Use the small

pieces of paper as guides to make holes in the cowl and install the wood screws.