Great Planes Super Skybolt 60 Kit - GPMA0170 - Manual (Page 14)

D 10 F1A has four lines embossed on it The two
short lines are the actual horizontal center of the
former The two crossing lines are offset to the left
(as viewed from the pilot's seat) of the horizontal
center to automatically put the spinner in the
center of the cowl when right thrust is built into the
plane The crossing lines are what the engine
mount should be centered on since this plane is
built with 2 degrees of right thrust Center the
engine mount on these lines as shown on the
plan, and mark the bolt locations through the
mount Drill 5/32" holes at the bolt locations
NOTE: This kit includes the new Great Planes
EM4070 Adjustable Engine Mount. To properly
position the mount, just slide the mounting
beams together and center the beams over the
embossed lines when marking the mounting
holes. There are "tick" marks on the side of the
mount to help you position it vertically.
6-32 Blind Nut
6-32 X 2-1/2" Machine Screw
D 12 Press the four 6-32 blind nuts (NUTS003)
into the firewall from the back and tap them into
place with a hammer Temporarily attach the
engine mount to the firewall with the 6-32 x 2-1/2"
machine screws (SCRW071) to make sure the
holes are in the correct position Adjust the holes if
necessary, and glue the blind nuts in place.
D 13. Wet the outside of the fuselage sides from
F2 forward with water to help it bend around the
formers Test fit the die-cut 1/8" ply fuel tank floor
(SKY6F14), die-cut 1/8" ply former LG-1
(SKY6F10) and the firewall into place in the front
of the fuselage Notice that the fuel tank floor helps
set the right thrust and appears to be cut crooked
until you get everything assembled The firewall
should touch the front edge of the fuse side notch
on the left fuse side and the back edge of the
notch on the right fuse side.
D 11. If you are using a four cycle or other
engine/mount combination that does not require
four 9mm engine spacers but will use 6-32 blind
nuts, you will need to install the 1/8" x 2-3/4" x 2-
3/4" plywood back plate (SKY6F31) on F1B.
Center it over the 5/32" holes and glue it in place.
Drill 5/32" holes through the back plate using the
holes you drilled earlier as guides NOTE If you
are using another engine mounting system, such
as vibration isolation type mounts, you may not
need the back plate The photos show a typical
.60-size glass filled mount being used.
The easiest way to assemble these parts is as
follows
D A Snap the back of the fuel tank floor into
its notches
NOTE: The tank floor when in position correctly,
should cause the firewall to slant to the RIGHT.
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