Nexus 30 Main gear/Clutch gear meshing

Nexus 30 Main gear/Clutch gear meshing

Post by Greg Sha » Fri, 09 Oct 1998 04:00:00



Can someone help please?

I have been trying to correct the gear meshing between the main gear and
clutch gear on my nexus 30 heli without success. The tail gear is fine, but
the clutch gear has quite a gap between its teeth and the indents on the
main gear. It does work and the main rotors rotate, but it seems a bit loose
and if I rotate rotors by hand there is gear chatter from the clutch and
main gear.
Does anyone else have a similar gear problem or is this normal?

P.S this is not a pre built heli, but one made from a kit.

Greg


 
 
 

Nexus 30 Main gear/Clutch gear meshing

Post by Greg Bezja » Sat, 10 Oct 1998 04:00:00


My Nexus 46 has the same symptoms (tail gear is perfect, drive gear is very
sloppy).  There just is not enough play in the system to close up the main
gear to drive gear mesh.  I guess Kyosho made the main gear mold a bit too
small.

The sound you describe is similar to what I hear when I rotate the head.

It flies fine but I think that the main gear will wear out sooner than it
should.  After 4 gallons of fuel on my current main gear I can see the
profile of the drive gear worn into the plastic.

Greg



Quote:
> Can someone help please?

> I have been trying to correct the gear meshing between the main gear and
> clutch gear on my nexus 30 heli without success. The tail gear is fine,
but
> the clutch gear has quite a gap between its teeth and the indents on the
> main gear. It does work and the main rotors rotate, but it seems a bit
loose
> and if I rotate rotors by hand there is gear chatter from the clutch and
> main gear.
> Does anyone else have a similar gear problem or is this normal?


 
 
 

Nexus 30 Main gear/Clutch gear meshing

Post by TAMCGH » Sun, 11 Oct 1998 04:00:00


take the fuel tubing (if applicable) out and adjust by loosening the screws in
the start shaft block and adjusting that way

 
 
 

Nexus 30 Main gear/Clutch gear meshing

Post by C. M. Smi » Wed, 04 Nov 1998 04:00:00



says...
Quote:

> take the fuel tubing (if applicable) out and adjust by loosening the screws in
> the start shaft block and adjusting that way

That should nicely mis-align the clutch.

You could posibly try removing a shim so that the main gear seats lower
in the frame but make sure the tail drive gear has not too much
backlash. Mine has no shim fitted and is fine.

Colin