Futaba GY701 - Manual (Page 53)

M
OUNTING THE
M
AGNET AND
S
ENSOR
53
Cooling fan modification
Drill a hole in the fan at the magnet mount-
ing position. Make the hole about 4.1mm in
diameter and 1.5 to 1.7mm deep.
Embed the magnet in this hole in the direc-
tion in which an output is obtained. Use
epoxy adhesive that cures in 30 minutes or
longer. Do not use epoxies that contain metal
such as JB Weld.
Magnet
Cement the magnet to the cooling
fan so that the magnet is level
with this side of the cooling fan.
If the cooling fan is unbalanced and vibrates,
etc., balance it by mounting the spare magnet
to the opposite side of the cooling fan in the
opposite polarity (so that it does not output a
signal).
Sensor mounting
The sensor mounting method depends on the heli-
copter and engine.
Mount the sensor to the sensor stay. (Tempo-
rary assembly)
Drill a hole in the fan cover at the part cor-
responding to the sensor so that the distance