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❑
Using a ruler and a pencil, measure and draw one
horizontal line 1/2"
above
the horizontal centerline and one
horizontal line 13/16"
below
the horizontal centerline.
❑
Using a ruler, measure the distance between the holes in the two engine mounting beams. As an example, for the
Magnum XLS .46 engine used in this model, the distance between the holes in the two beams is 1-11/16". Your measurement
may differ if you are using a different size engine. It depends on the width of the crankcase.
❑
Temporarily glue the two engine mounting beams to your
engine's mounting lugs using a couple of drops of thick C/A.
☞
The location of the engine is not important at this time.
❑
Divide the measurement found in the procedure above
in half.
❑
Measure this resulting distance from the vertical centerline
and draw one intersecting line across the upper and lower
horizontal lines.
☞
As an example, if using the Magnum XLS .46, you would
draw the intersecting lines 27/32" to the right and 27/32" to
the left of the vertical centerline.
Step 2: Installing the Engine Mounting Beams
❑
Using a drill with a 5/32" diameter drill bit, drill a hole
through the firewall at each of the four intersecting lines.
❑
Remove your engine from the mounting beams and
install them using four 3mm x 16mm machine screws and
four 3mm blind nuts. Tighten the screws firmly to draw the
blind nuts into the back of the firewall.
☞
We suggest applying threadlocker to the screws to
prevent them from coming loose during flight.