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Electric Motor Installation - Carf-Models Valiant Setup Instructions

World class f3a pattern airplane

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CARF-Models Co., Ltd, Contact email: techsupport@composite-arf.com

Electric motor installation:

There are two basic types of electric motor
installations. Firewall mounted for
outrunner motors like Axi and Plettenberg,
and nose ring mounted with a rear support
for inrunner motors like Hacker and Neu
motors both with reduction gearing.
Firewall mount:
For a firewall mounted motor setup you will
use the smaller of the two firewalls, the one
with the cooling holes precut. It will mount
further forward than the glow firewall.
Once the firewall is installed the only way to
install and remove the motor will be through
the opening in the nose ring. So the first
step is to open the nose ring opening enough
to slide your motor through it.
Before opening
After opening
Motor clearance
There is a hole drilled near the center of the
firewall but offset slightly. This is the center
of the motor axis when the firewall is in-
serted with the hole offset to the plane's left
which makes up for the built in right thrust.
Unless your motor is significantly different
in size from the standard outrunners it
should be used to center your motor mount.
Firewall with motor mount:
The motor or mount should have threaded
attachment points so that it can be screwed
in from the back of the firewall. Attach your
motor mount and motor to the firewall and
slide the whole unit in from the rear. You
will find that the motor will fall short of its
final position. The Plettenberg Evo shown
in the pictures was about several mm from
where it needed to be. Use your spinner
back plate to keep the motor centered and
sand away the edges of the firewall that are
contacting the fuselage. Keep fitting the
firewall. It should slip in a little further each
Page 19
Instruction Manual "Valiant" (Draft Version)

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