Raptor 30 Tail Rotor Stops

[JaseGill]

Guys,

Have a problem with my Raptor 30 V2.

For some reason when I land and decrease the throttle from landing to idle the tail gear stops rotating. Soon as I noticed this I watched it from the side and the actual drive gear for the belt is stopped.

This is only till the head speed drops a bit and suddenly the tail gear spools up and slows in synch with the head.

Any Ideas ? I thought maybe the clutch is binding and stops but that seems unlikely. I did have a crash a while back but dismantled the head and tail gear to make sure no shafts were bent, which the didnt seem to be.

Im worried that if this is happening on spool down there may be a chance of it happening with the head up to speed or even worse if the engine dies and I need to do an as yet unpracticed auto...

Cheers,

Jase.

[Stuart]

Unless you have a driven tail upgrade on your Raptor 30 V2 this is the norm. basically the main gear is not turning any longer, thus not driving the top pulley. Now you can in an auto get some drive into the tail when you throttle hold as some drag from the blades will keep the tail going for a short while but not all the way down.

This is what a driven tail looks like :-

[JaseGill]

Stuart,

Looks a lot like mine but Im guessing mines not driven... How come it stops at a certain speed though and then starts again as the speed of the head drops off ?

Does the colour denote the type ? Mine is a Grey Driven gear with a red lower tail drive gear.

Is there any way to tell which one I have ? My Raptor is a 30 V2 BB49.

Cheers,

Jase.

[Stuart]

Jase,

The grey upper gear with the red lower pulley is the stock version that has no tail drive, the white one as shown is a upgrade which gives you 100% tail drive, more of benefit when doing auto's.

You have a one-way sprag bearing that in yours joins both the red pulley and grey gear together, on the white version the grey gear is only attached to the sprag bearing, while the upgrade attaches to the mast at the bottom via the bolt they are not joined at all.

So when the clutch dis-engages, the mast will continue to spin and continue to drive the tail via the bolt at the bottom of the mast.

While in yours as the clutch dis-engages, the mast keeps spinning but with no direct drive to the tail it slows and stops.

Hope this helps to explain this...

[JaseGill]

Stuart,

Thanks yr a star. Guess if you have the modded one its possible to have some tail authority if you do auto's. I was assuming that was the case anyway as it is in full size machines.

Dont think I need it for my current level of expertise but looks like it may be worth getting at a later date.

Do you think maybe the bearing is a bit gummed up in mine at the moment and that its sticking as the speed comes off the head making the tail come back as the speed drops off ?

Cheers,

Jase.