Great Planes GPMG0775 User Manual

If any parts are missing, broken or defective,or if you have an y questions about the
gear drive or motor please call us at [phone] and we’ll be glad to help. If you
are calling for replacement parts for the gear drive, please look up the part numbers
in the gear drive instructions and have them ready when calling.

Motor Selection

The motor supplied in the S-600GD power package is a Great Planes S-600R re v erse
rotation motor specifically designed for the use with the Great Planes GD-600 Gear
Drive and 15 tooth pinion. This provides a 3.0:1 gear ratio that will turn a 9x8 prop
between 7,500 and 8,000 rpm when powered by an 8.4 volt battery. Operating the
S-600R motor at a higher voltage will significantly shorten the motors life.

Motor Care

The S-600R comes with two high quality ball bearings that will last the life of the motor .
Unlike less expensive motors with bronze bushings, the ball bearings do not need to
be oiled every few runs.

The motor brushes installed in the S-600R will last
many flights before needing replaced. Replacement
brushes and brush springs are available from most
major motor manufacturers.To replace the brushes,
use a small screwdriver to pry the motor springs out
of the brush holders. Remove the screw holding the
brushes and carefully pull the brushes out of the
brush holders. Remove the motor from the geardrive
and clean the inside of the motor with a quality motor
cleaner such as Duratrax

®

Power Shot Electric Motor Cleaner Spray (DTXC2458). To
install the new brushes, insert the brushes in the brush holders and attach the end of
the brushes to the endbell using the screws previously removed. Some of the replace­ment brushes may not have an eyelet to attach the brush to the endbell. In this
instance, the end of the brush should be soldered to the endbell. Use a small screw­driver to replace the motor brush springs in the brush holders. Do not allow the brush
springs to snap against the brushes.This can cause the brushes to chip or crack.

After replacing the motor brushes, it may require two or three motor runs before the brush­es are seated against the commutator completely and the motor is producing full power.

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Entire Contents © Copyright 2002 GPMZ0279 for GPMG0770/0775

S-600GD SYSTEM WITH ESC

S-600GD SYSTEM

Assembly and Operation Instructions

Pry Brush

Spring

Pull

Brush

Out

May Need

to Solder

Brush Lead

Here