Prop Balancers and Reamers
A
prop
balancer
is
an
essential
piece
of
equipment
for
electric
flyers.
An
out
of
balance
prop
apart
from
causing
vibration,
noise
and
possible
damage
to
the
airframe
and
motor,
also
saps
power,
increases
power
consumption
and
shortens
flight
times.
Notes
on
balancing
wooden
props.
Prop
reamers
are
only
suitable
for
plastic/nylon
props,
they
are
not
suitable
for
wooden
props.
Wooden
props
need
to
be
drilled.
It's
best
to
use
a
bench/pillar
drill
to
ensure
the
hole
is
at
right
angles
to
the
prop.
A
hand
drill
can
be
used
with
care.
Enlarge
the
hole
in
small
increments
(0.5mm
is
best).
Drill
half
way
through,
then
turn
the
prop
over
and
drill
through
from
this
side.
Repeat
this
until
you
have
the
required
size.
Make
sure
the
prop
is
restrained
when
drilling
so
that
the
prop
can
not
rotate
and
injure
you.
To
balance
wooden
props
spray
clear
car
lacquer
on
the
lighter
side
so
that
it
is
slightly
heavier.
When
the
propellants
in
the
lacquer
evaporates
off
it
should
balance
horizontally.
Check
the
balance
again
when
the
lacquer
is
dry
and
repeat
the
above
if
necessary.
Notes
on
balancing
plastic/nylon
props.
Ream
or
drill
the
prop
to
the
correct
diameter
if
necessary.
Make
sure
the
prop
is
restrained
when
drilling
so
that
the
prop
can
not
rotate
and
injure
you.
Lightly
sand
the
leading
and
trailing
edge
of
the
prop
to
remove
any
sharp
flashings.
Place
the
prop
on
the
balancer.
In
most
cases
one
side
will
drop,
this
is
the
heavy
side.
Rotate
the
prop
by
180
degrees
and
see
if
the
heavy
side
drops
quicker
or
slower.
If
it
drops
quicker
then
rotate
the
prop
by
180
degrees
again,
if
it
drops
slower
then
keep
it
as
it
is.
To
balance
the
prop,
sand
the
trailing
edge
(not
the
leading
edge)
of
the
heavier
side
of
the
prop
until
the
prop
balances
horizontally.
Alternatively
you
can
spray
clear
car
lacquer
on
the
lighter
side
so
that
it
is
slightly
heavier.
When
the
propellants
in
the
lacquer
evaporates
off
it
should
balance
horizontally.
Check
the
balance
again
when
the
lacquer
is
dry
and
repeat
the
above
if
necessary.
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