Power-Direct-Drive mini 440x4mm/M4 Motor 5-600, ball bearing, Free-running shaft

Product no.: 3.3291.wF
Price incl. VAT, plus delivery
Delivery weight: 0.1 kg

Power-Direct-Drive mini 440x4mm/M4 Motor 5-600, ball bearing, Free-running shaft

- with aluminium motor flange and built-in mounting foot and coupling

provide a rigid connection between motor and shaft tube
dissipate heat from the motor to the shaft tube.
no power losses due to misalignment
simple, fast assembly
Bearing sleeve with ball bearing and shaft sealing ring
Power direct drives with 4mm shaft and M4 thread.
With shaft coupling

Motor flange 25mm (500-600er Motor)
Shaft Ø 4mm
Wellenlänge 440
Tube- Ø 7mm
tube length 195mm (with bearing sleeve)
length with flange 440mm
thread M4
thread length 12mm
middle bearing no
bearing Plain bearing, ball bearing, shaft seal (in bearing sleeve)
thrust bearing Nylon
Coupling Elastic 4x4mm


Shaft and tube lengths can be changed according to your specifications. Up to +/- 5cm length change no price change.

suitable shaft supports: see recommended accessories above

Delivery without motor

suitable e.g. Bernhard Gruben 1:20 or similar models.

Advantages of the DIREKT coupling flanges or Gundert-Power-Direkt drive systems compared to all other shaft systems available on the market.

- inexpensive
- easy change or repair of the engine. Even if you can't reach the engine screws easily because the rear or the internals are too tight or the engine screws are difficult or impossible to reach. With this drive system you only work from above.

Mounting the Power Direct Shaft System

1. drill out the shaft passage at the rear and insert the shaft assembly. The shaft tube should protrude at least 1-2mm so that the thrust washer is not glued.
Make a support of wood, GRP or similar and fit it under the coupling flange into the fuselage.
Place the two drive-in nuts on the support and tighten from above with the screws. If necessary, drill holes for the screws in the support.
    Glue the support into the fuselage.
4 Glue the drive-in nuts onto the support using 2K adhesive. Lightly grease the screws to prevent them from sticking.

Disassembling the motor
Unscrew the screws from the drive-in nuts. Loosen the two M3 setscrews in the flange and the coupling.
Remove the motor with the coupling flange and coupling from the pipe.
Now you can easily work on the motor or change it. The assembly is carried out in reverse order. The previous installation position is reached again by means of the glued drive-in nuts. Important: Do not use bulkheads in the boat to install the coupling flange. Glue an extra underlay into the boat. The advantages of simple disassembly will otherwise be lost. Assembly or disassembly from above is then no longer possible.


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Prices incl. VAT, plus delivery

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