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Glue the three motor holder hoops together as shown in
the picture. You can use the motor to assist aligning them
but remove the motor before the glue sets.
Once the glue on the motor holder is dry place the motor in
the holder and insert it into the chassis so that the motor
rests on the motor support lugs.The motor should now be
glued to the holder. Wood glue will have sufficient grab on
the motor to keep it in place. However a couple of drops of
cyano glue will also do the trick.Alternatively you could
use hot-melt glue if you have a glue gun. Take care not to
glue the motor assembly to the chassis.
When all glue is dry it is time to secure and align the motor.
Place a washer onto each self-tap screw and carefully
screw the motor/holder onto the base. Don't tighten the
screws fully yet. Slide the holder around until you have the
perfect mesh between the worm and the spur gear. The
worm must not be tight against the gear but should have a
tiny gap. Now tighten the screws but be careful not to
overdo it as this may damage the base.
To minimise wear ensure that the brass gear is central to
the worm gear on the motor shaft when run in both
directions. Adjust the on the axle if necessary until there is
equal play either side. A spare worm is supplied to
Note: The gears should not be lubricated, oil or grease tends to be pushed off the worm anyway
so only serves to attract dust and dirt and nylon is self-lubricating.
The chassis top-hat bearings do already contain oil but a tiny drop may be applied after
extended running
(wheels bearings and axlebox)
