X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: "Charlie England ceengland7@gmail.com" Received: from mail-lf1-f50.google.com ([209.85.167.50] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1461333 for flyrotary@lancaironline.net; Wed, 28 Apr 2021 17:29:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.167.50; envelope-from=ceengland7@gmail.com Received: by mail-lf1-f50.google.com with SMTP id d27so44734422lfv.9 for ; Wed, 28 Apr 2021 14:29:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=0B4HNTWw6YSsL/7fo07n10mF4Btt4upLvflGvb5ut9s=; b=UgH4avpM2M07wAL5aiUDhM58BgAWnx6FoiwLcLRpqyJc95Z3yqwDs9qeCsfgloJTYz yzWlYHqQaUZYqy2DFgmcl8vNzVdZg0qDbZMnyyJtMDNKrgjIMI5btHqMW45qMng0nQi3 8Z5bsPGJbVYoNP5kN6fIk4F405JKNS9dd4S3sLzICKY/7tF5amWRFFxR2h7HwZh2pYS3 1rxh52Ty43vF11Ooq/6DAiDZ/EI7UfBzBbrK99DFaLA+wjVg1EPLdm8crOYoGTZRXi6e wcrIjCHyeezhIdbf7SBwlkpUh8MEMhSdvI2TkGz3wWLKX1yvGjFXc+/wuuY36hgoRQZX Wkyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=0B4HNTWw6YSsL/7fo07n10mF4Btt4upLvflGvb5ut9s=; b=DmI6Btot9uUjTYE1mr0EdwHLnxHEZ7cu8YS+DW9NtkD4DJGJZBEiZVwSoVJUeUwYsE xawPDPg5c5L3FEGlvK0nJST56gqYeEiBGtSCclCT1ggHNRG7Z+jgAleMQInBCOU8rhmG wehcP8T3r/GZirHLJhDlOdZJhcJ7MaleRSPlPCThLs94xiLyVL2jTwkT+zqwevpqk5X9 dcLRPtiDPFeQnfzLhc20N68SSnpgsalJGIAeNJsBhEdX8C37Z95rFSB7ghbLTwsCNNrq I1cR/D6UXCTWqfKQOV3Li0Et0LoajvlkBQwPzkNZLWne7wYSLDN3cXfh6tJJNqcKtI7h 7uIg== X-Gm-Message-State: AOAM532GB8Bacp3jz3ar+6KbhotaVbkqCfU4R5G0XQnbxf+HItV5Q/QV 0RRHqXGfeOu3ilzWq+Ai/cit+s+Nfwly9pQPzXldQFWa X-Google-Smtp-Source: ABdhPJxViaWp9z6ahkDQF9eWsm1co7eL+ukWf+IiawJzfsAWFq8MFxgqxHC/f7JJLL4DEl5oSD70GBz6KjNw+s3vua8= X-Received: by 2002:a05:6512:410:: with SMTP id u16mr22634698lfk.641.1619645332143; Wed, 28 Apr 2021 14:28:52 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 28 Apr 2021 16:26:42 -0500 Message-ID: Subject: Re: [FlyRotary] Re: PSRU thrust bearing/washer To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000af418505c10f10ae" --000000000000af418505c10f10ae Content-Type: text/plain; charset="UTF-8" The confusing thing to me is how it got hot enough to melt nylon; over 400 degrees F. That seems a lot hotter than than the shaft or bearings should ever get. Virus-free. www.avast.com <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Wed, Apr 28, 2021 at 3:13 PM Matt Boiteau mattboiteau@gmail.com < flyrotary@lancaironline.net> wrote: > The end play was good. Metal ruler across and could just see daylight > across. > > Neil's uses a rubber oring, so we test endplay without it. Then adding the > oring will add the nessessary clearance in end play. > > The one Neil supplied was either nylon or Teflon flat washer and it > melted, so removed it. So talking with him, switched it out to the oil > embedded one. Again, just a flat washer. > > Anyone have more details what Tracey used? Like a spring washer made out > of nylon? > > > > > > On Wed., Apr. 28, 2021, 14:16 Finn Lassen finn.lassen@verizon.net, < > flyrotary@lancaironline.net> wrote: > >> Too little or too much end play? >> >> Tracy specifies 0.005 to 0.035" >> >> Note that if you check it without RTV, it may increase when you assemble >> it. >> >> Finn >> >> On 4/28/2021 1:05 PM, Matt Boiteau mattboiteau@gmail.com wrote: >> >> I have one of Neil's 3.17 psru with Tracey's cushion drive. *I also sent >> Neil an email but it's late in the night in Australia. >> >> After my fly off hours, tearing down the plane to inspect everything. The >> Ultra-Low-Friction Oil-Embedded Thrust Bearing is broken into pieces. >> https://wwwmcmaster.com/7421K28/ >> >> The nylon or teflon washer supplied just melted. I thought I nailed it >> with a fix using the oil-embedded, but I guess not. >> >> I think in Tracey's documentation, he called it a snubber ? Any ideas >> what I can use, or why this happens? >> - Matt Boiteau >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html >> >> >> >> ------------------------------ >> [image: Avast logo] >> >> This email has been checked for viruses by Avast antivirus software. >> www.avast.com >> >> >> <#m_-123363309103512791_m_1371103534129407806_m_-7051677788530083193_m_7353984697272831048_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> > --000000000000af418505c10f10ae Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
The= confusing thing to me is how it got hot enough to melt nylon; over 400 deg= rees F. That seems a lot hotter than than the shaft or bearings should ever= get.=C2=A0
3D"" Virus-free. www.avast.com

On Wed, Apr 28, 2021 at 3:13 PM Matt Boiteau mattboiteau@gmail.com <flyrotary@lancaironline.net> wrote:
= The end play was good. Metal ruler across and could just see daylight acros= s.

Neil's uses a rub= ber oring, so we test endplay without it. Then adding the oring will add th= e nessessary clearance in end play.

The one Neil supplied was either nylon or Teflon flat washer an= d it melted, so removed it. So talking with him, switched it out to the oil= embedded one. Again, just a flat washer.

=
Anyone have more details what Tracey used? Like a spring = washer made out of nylon?





On Wed= ., Apr. 28, 2021, 14:16 Finn Lassen finn.lassen@verizon.net= , <flyrotary@lancaironline.net> wrote:
=20 =20 =20
Too little or too much end play?

Tracy specifies 0.005 to 0.035"

Note that if you check it without RTV, it may increase when you assemble it.

Finn

On 4/28/2021 1:05 PM, Matt Boiteau mattboite= au@gmail.com wrote:
=20
I have one of Neil's 3.17 psru with Tracey's cushion drive. *I also sent Neil an email but it's late in the night in Australia.

After my fly off hours, tearing down the plane to inspect everything. The Ultra-Low-Friction Oil-Embedded Thrust Bearing is broken into pieces.=C2=A0
https://wwwmcmaster= .com/7421K28/

The=C2=A0nylon or teflon washer supplied just melted. I thought I nailed it with a fix using the oil-embedded, but I guess not.

I think in Tracey's documentation, he called it a snubber ? Any ideas what I can use, or why this happens?
- Matt Boiteau


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