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HIROBO Freya - Sceadu - Shuttle > Sceadu auto-rotation unit
 
 
James3922
Heliman
Location: Scotland

The last time my Sceadu flew the engine cut on me, thankfully close to landing. On inspection, brass filings were found all around the area above the main gear. On dis-assembly, I found that the top shoulder of the sleeve that rotates within the one-way bearing had cut into the top brass washer by around 2mm. The one-way appears to be fine, gripping well when the two main gears are rotated against one another. However, I have hovered the the machine since and although it flys ok, it's making a metalic ringing noise. Has anyone any experience of this problem?, any help or advice would be greatly appreciated.

Clyde View Model Helicopter Club www.cvmhc.co.uk
08-11-2008 04:16 PM
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

That can happen if you don't have any lubrication there and do a lot of autos.

I put a bit of high-speed grease at that junction and follow it up by adding a bit of oil now and then. You can recycle those bushings by turning them so the worn side is toward the inside if they aren't worn too badly. They won't wear that much if you lube this area in the future.

For the noise you're hearing, I suspect either the engine rear bearing or a worn pinion bearing (the one that the pinion gear runs in).

Leif
08-12-2008 01:50 AM
 
 
James3922
Heliman
Location: Scotland

Hi Leif,
Thanks for the reply. My pinion bearing is good.I will recycle as recommended and apply grease. I hadn't considered the engine bearing issue, I will check it out.
Thanks again,
Cheers
James

Clyde View Model Helicopter Club www.cvmhc.co.uk
08-12-2008 07:27 PM
 
 
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HIROBO Freya - Sceadu - Shuttle > Sceadu auto-rotation unit
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