FES-LS8-M100 MOTOR manual Version 1.21
April 2020
Page 4 of 12
2. General
Congratulations on your purchase. This is a high-end product of brushless
synchronous permanent magnet motor with electronically controlled commutation system
3 phase, which will keep its capability for a long time if treated the right way.
The drive was developed and very elaborately tested by Ing. Matija Žnidaršič and
Ing. Luka Žnidaršič.
The development objective was to build suitable motor for FES application which
must be light and small enough to fit into sailplane front part of fuselage, but very
powerful providing specific performance at highest efficiency.
This motor allows a gearless drive without the usually essential gear unit which
cause power losses, additional weight, complexity and maintenances.
Because of the little internal resistance of the motor, very good performances are
achieved in a wide range and at an excellent efficiency.
Though many intensive tests had already been made and though the parts were
produced by modern CNC machines, the drive is still not a real series product.
Some manufacturing processes like windings are made by hand, what makes every drive
of the first series unique.
3. Model designation
Motor model designation is the following:
FES-LS8-M100
(1) (2) (3)
where:
- (1) motor application
- (2) designed for sailplane model
- (3) approximate motor length in mm
Motor serial-number is identified as number which follows model designation
sn: XXX
Motor identification numbers are engraved into rear Aluminium plate of motor.
