Mailing List flyrotary@lancaironline.net Message #64457
From: Neil Unger 12348ung@gmail.com <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: 1mm thrust washer
Date: Mon, 12 Nov 2018 11:52:08 +1100
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Bobby,

                       Sorry I misunderstood you.  By all means contact Randy as he may be able to fit you in.  He has a complete reduction drive of mine there to measure,  and certainly has the machinery to make same.

Neil.


On 11/12/2018 7:41 AM, Bobby J. Hughes bhughes@qnsi.net wrote:
Neil

I was asking if Randy would consider making the 1mm washer mounting cup. I have a chip detector but removed it due to the 1mm washer / shaft wear creating fuzz every few hours and setting off an alert.  I also measure the gearbox oil temp output.

Bobby

Sent from my iPad

On Nov 11, 2018, at 3:15 PM, Neil Unger 12348ung@gmail.com <flyrotary@lancaironline.net> wrote:

Bobby,

                      Another way is what I did, was to put a temp sensor in the pSRU which will let you know if all is not well with elevated temps.  This is standard in heavy trucks,  One in the gear box, and one each in both diffs.  Simple and effective.

Neil.


On 11/12/2018 6:58 AM, Neil Unger wrote:
Bobby,

                      I put a magnet in the return line to catch any metal, but only got the "fuzz" you are talking about so simply removed it.

Will discuss with Randy re stocking a chip detector.  That will be his commercial decision.

Neil.


On 11/12/2018 3:29 AM, Bobby J. Hughes bhughes@qnsi.net wrote:
Neil,

That should work. I believe Tracy has suggested the same solution. It would allow for replacing the 1mm washer if needed. I’m thinking aluminum instead of steel to minimize any wear on the washer outer edge if it rotated. I would like to start using my gearbox chip detector again. The 1mm washer shaft contact caused enough fuzz to activate it every few hours so I removed it. Would this be an item Randy Kempf would consider supplying? We need four in Austin TX and I’m sure others would retrofit if the part was available.  The cup OD would need to increased but I think we have plenty of room to accommodate modification.

Thanks,
Bobby

Sent from my iPad

On Nov 10, 2018, at 4:01 PM, Neil Unger 12348ung@gmail.com <flyrotary@lancaironline.net> wrote:

Bobby,

                    Tried my bearing blokes with no joy, over that size they are all 1.5mm.  There is another way however if there is room.  I suggest a small alloy (or steel) "cup" with mounting flanges like the washer you want, except in the middle the 1mm washer fits flat against the mounting plate as usual, and the cup then tapers upwards (after the 1mm thick retaining hole at the bottom ) and out slightly (for say another 3mm?) to prevent the 1mm thrust washer to "jump out of bed" and moving sideways. If it does move forward the taper will force it back into place when the load comes on again.  My $0.02 worth,

Neil.


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