Great Planes 27% Extra 330S ARF - GPMA1413 - Manual (Page 24)

24
Gas Engine Throttle Hookup
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1. If using a Fuji-Imvac BT-43EI-2, use an extended 3/16"
[4.8mm] drill bit or a 3/16" [4.8mm] brass tube sharpened on
the end to drill a hole for the gray pushrod guide tube where
shown in the following photo. If using a different gas engine,
and if there’s a chance the muffl er might be in the way of the
throttle pushrod, temporarily mount the muffl er to the engine
to make sure you locate the throttle pushrod where it won’t
interfere with the muffl er. Mark the fi rewall where the throttle
pushrod will go through and drill a 3/16" [4.8mm] hole at that
mark (this will probably require temporary removal of the
engine–also be certain to drill the hole where the pushrod
will not interfere with the fuel tank behind the fi rewall.
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2. Hook up the throttle using the hardware listed below.
Gas engine throttle pushrod hardware:
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36" [910mm] white, nylon pushrod
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3/16" x 36" [4.8 x 910mm] gray pushrod guide tube
On the servo end:
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2-56 x 1" [25mm] threaded rod,
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nylon clevis
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silicone clevis retainer
On the engine end:
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2-56 x 1" [25mm] threaded rod
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nylon ball link
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2-56 ball link ball
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2-56 nut
Cut the gray pushrod guide tube to the correct length, then
use coarse sandpaper to roughen both ends where it goes
through the fi rewall and where it gets glued to the pushrod
supports. Trim the plywood pushrod supports as necessary
and use them to secure guide tube where shown. Securely
glue the pushrod tube and the supports into position with
medium CA.
Mount the Ignition Module, Ignition Battery &
Ignition On/Off Switch (gas engines only)
Refer to these photos while mounting the ignition
module and ignition battery.
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1. The same as when you were routing the fuel lines and
hooking up the fuel tank, read the instructions and plan the
battery and module installation, making sure all the wires
will reach wherever they are supposed to go. Don’t forget
about the ignition on/off switch–a heavy-duty on/off switch
from your radio system could be used for this. One way to