Model Tech Dragon Lady Instructions For Final Assembly page 23

Using a ruler, measure the distance between the holes in the two engine mounting beams. As an example, for the
Magnum XL .61ARNV engine used in this model, the distance between the holes in the two beams is 2-1/8". Your
measurement may differ if you are using a different size engine. It depends on the width of the engine's crankcase.
Step 2: Installing the Engine Mounting Beams
Step 3: Aligning and Installing the Engine
IMPORTANT
Before installing your engine, please note below what the measurement from the firewall to the front of
your engine's thrust washer should be:
For 1.08 - 1.20 engines the measurement should be 5-3/8".
For .61 - .91 engines the measurement should be 5-7/8".
If you are using the plywood spacer, do not measure from the front of the spacer, measure from the front of the firewall.
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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. It's
more important that the beams are square to the mounting lugs.
Divide the measurement found in the previous procedure
in half.
Measure this resulting distance and draw one horizontal
line above and one below the horizontal thrust line.
As an example, if using the Magnum XL .61ARNV, you
would draw the two lines 1-1/16" above and 1-1/16" below the
horizontal thrust line.
Using a drill with an 11/64" 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 4mm x 30mm socket-cap screws, four
4mm flat washers and four 4mm blind nuts. Tighten the screws
firmly to draw the blind nuts into the back of the firewall.
IMPORTANT
If you're not using the plywood spacer, install
the mounting beams using the shorter 4mm x 20mm screws.
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