Mailing List flyrotary@lancaironline.net Message #63603
From: Neil Unger <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: bearing in mazda g/box
Date: Sun, 6 Aug 2017 08:30:42 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Charlie and Bill,  yes tracy used two needle thrust bearings as I have, but in practice there is nothing to hold the thrust washers either side of  the two bearings.  I just worry about that, but tracy's Box has done thousands of collective hours, so I possibly should throw my worry beads away.  Thanks Neil.


On 8/6/2017 4:10 AM, Charlie England wrote:
Neil,

If you're looking for the Mazda transmission input shaft bearing, here's a page from the parts manual. If you need the entire manual, email me at ceengland7@gmail.com & I'll send you the pdf.

Charlie

On 8/5/2017 11:29 AM, Charlie England wrote:
I think those are the thrust bearings, to handle the thrust of the helical gears in the planetary gearset. Is that what Neil's asking about?

On 8/5/2017 9:51 AM, Bill Schertz wrote:
I believe that Tracy's gearbox uses a stack of needle bearings to lower the rpm of each bearing to a better value
Bill Schertz

-----Original Message----- From: Neil Unger
Sent: Friday, August 04, 2017 11:54 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] bearing in mazda g/box

Gents,  I have suddenly realised that the main bearing on the Mazda
g/box input shaft would have to take 8/9000 RPM.  In my search most
bearings give out at 6,000 RPM.  Does anyone know just what bearing they
use?  Perhaps the number??   I realise i am the optimist. Thanks Neil.


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