Great Planes SU-31 3D ARF - GPMA1412 - Manual (Page 18)

18
The following sections contain detailed instructions for
mounting an O.S.
® 1.60 FX two-stroke glow engine, Fuji-
Imvac BT-43 EI-2 gasoline engine, and the Great Planes
RimFire 63-62-250kV out-runner brushless motor. Each
specifi c installation only contains information relevant to
that particular power system so you can skip directly to the
section that matches your choice of power systems.
GLOW ENGINE INSTALLATION
Mount the Engine
The installation of a brand of glow engine other than the
O.S. 1.60 FX should be similar to the procedure listed
below for the O.S. model. A template is provided on page
51 for installing the included Great Planes 1.20 to 1.80
adjustable nylon engine mount.
❏
1. Cut the template out on page 51 for mounting the O.S.
1.60 FX glow engine. Use tape or spray adhesive to hold the
glow engine mount template to the fi rewall. Align the vertical
and horizontal lines on the template with the embossed lines
on the fi rewall.
❏
2. Use a large T-pin or a wire sharpened on the end to
transfer each bolt hole mark on the template into the fi rewall.
❏
3. Use a 7/32" [5.6mm] bit to drill holes at the four marks
you made on the fi rewall. To reduce tear-out, make pilot
holes with a smaller bit fi rst, then fi nish the holes with the
7/32" [5.6mm] bit. Insert a 8-32 blind nut into the back of
each hole. Use a 8-32 x 1-1/4" [32mm] SHCS and a few #8
fl at washers to draw the blind nuts tight against the back of
the fi rewall.
❏
4. Loosely install the 1.20 to 1.80 nylon engine mount
to the fi rewall using four 8-32 x 1-1/4" [32mm] SHCS, four
#8 fl at washers, four #8 lock washers and threadlocking
compound. The engine mount should be oriented so that the
engine head will be on the right side of the plane.