Clutch System

[sookainian]

May i please know how do i secure this clutch thingy ( circle in red ) ??

Every time after i tighten the 2 sets screws with blue locktite, during a 3D flight ( less then a few mins ) the whole clutch system get lose again and i will lost power.

Anyidea ??

Plus, may i know how do i remove the clutch ? ( turn it anti-clockwise or clockwise )

[Mercuriell]

Have you checked the run out on your fan hub ? This might be shaking the clutch loose - maybe try red or green Loctite on the set screws

[DavidH]

May i please know how do i secure this clutch thingy ( circle in red ) ??

Every time after i tighten the 2 sets screws with blue locktite, during a 3D flight ( less then a few mins ) the whole clutch system get lose again and i will lost power.

Anyidea ??

Plus, may i know how do i remove the clutch ? ( turn it anti-clockwise or clockwise )


The shaft is pressed into the clutch driver. It has nothing to do with powering the helicopter. The shaft is only there to start the engine. The clutch is screwed onto the clutch driver. It is threaded normal right hand threads. So looking at the clutch from the top, you unscrew it counter clockwise to take it off the driver.

The shaft has nothing to do with your loosing power problem. The set screws are just there to help secure the shaft. The shaft is only used to start the engine.

Here is what the driver looks like with the clutch not on it.

http://www.miniatureaircraftusa.com/Store/proddetail.asp?prod=120%2D26

Here is what the clutch looks like when it is not screwed on the driver.
http://www.miniatureaircraftusa.com/Store/proddetail.asp?prod=1021%2D22

The bearing block on yours is different than what is in the pictures above. But that is the only difference.

If you have two of these fan hub tools
http://www.miniatureaircraftusa.com/Store/proddetail.asp?prod=0546%2D21

You can make two wrenches to take the clutch and clutch driver apart.
One tool would need to be modified to slip over the ball and drive pins on the clutch driver.
The other tool needs two 4mm socket head bolts installed in the slots. The head of the bolts will fit in the holes in the clutch to hold it and unscrew it.

This is the same tools that MA uses to assemble the clutch and clutch drivers.

David

[kthane]

The clutch driver thingy circled in red is screwed onto the steel center piece. Those 2 set screws don't stand a chance of holding that driver base if that's all that's left holding it.