X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=XpSExmN9 c=1 sm=1 tr=0 a=bEFop4iEER4qHzhI98NhKA==:117 a=3YhXtTcJ-WEA:10 a=9NfvVgH7TPcA:10 a=r77TgQKjGQsHNAKrUKIA:9 a=o1OHuDzbAAAA:8 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=5lucXWJGAAAA:8 a=7g1VtSJxAAAA:8 a=_6GpL_ENAAAA:8 a=VYyDWYJOs3H4i3q-WrEA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=4PR2P7QzAAAA:8 a=vfX3t471oHEPuUwxSVYA:9 a=x6bYJCbzLOZoAXS2:21 a=_W_S_7VecoQA:10 a=tNdXKRarpy8A:10 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=tjNemD4wtFR24VrVMQME:22 a=grOzbf7U_OpcSX4AJOnl:22 a=4dqwQCo7Po2mVW515mGf:22 From: "Finn Lassen finn.lassen@verizon.net" Received: from sonic316-21.consmr.mail.ne1.yahoo.com ([66.163.187.147] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1461787 for flyrotary@lancaironline.net; Wed, 28 Apr 2021 20:30:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.163.187.147; envelope-from=finn.lassen@verizon.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=verizon.net; s=a2048; t=1619656234; bh=PQeXEHVflWTiKp/8uIR9bT+/eWFqlVgeTk4ePsxhI8Q=; h=Subject:To:References:From:Date:In-Reply-To:From:Subject:Reply-To; b=UBznOQcjFQWLKKqXLjKyOI2h0PF2rALMojqxIS9REyL9VWYJ4XhBpxRGdKAzS5cCRgrg1nF7qxjLKkGba/8gwWhhQXsZ9bfSTPDgqNcxJ/nVBoakmlQikG+522ro8rUFZAYs/uHzj9RlW2zcuN6iBqNVqOdE9ImYixZQwWKQ4nOmTYeDQ1QkU9z4ItKG/RRJ8ACAc6BoUMVzaiobjrwcwd2HGzJqA72GAy+bZnys77gq672g+lzrGDIXQvweAWUlNPY7wGhb0es2JXWcB6bGGDH1lP4Yw20p6GDLV47hQ5BRtY2Taavinokdt9fvgFJ0S8mhCsLnXPIL1BimM597Sg== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1619656234; bh=v0jywTPeA0D8LSCU4Yu4awE1WlkuaGUnh03JaiID4ka=; h=X-Sonic-MF:Subject:To:From:Date:From:Subject; b=on6RP1jnKv2y+a8RXGIOMl02WQRD+oGa4/JSq//6QB+1JUAp7INhXT2TOR76obis3mIjPrfsidkRobhMCLJMXkTk3LUgsQLqZA2jZHa4ZOVZ+Z4abcZbb9HK+7dYcekprIvwnjtKDDvA/B7BYgMHfi+aPRoLReN5rQS/4Y+tTMk8ztSterTx+w9tzqUdidJEf4cRyitvuDCvmnV4OgRD7Ur9r6N1r0AJ48F+Vf3ORc1CXbW5DqFPaMIkPxyfKubIYe6xQnv6gDslNqamXztZ3pV+YFsoCJ9iddPNiUTP/SuzOzkWr/KAIiuUr/XI+TbiwfZPgrwhZLOP+TYXzG2xhw== X-YMail-OSG: 388EuGYVM1nTP8GYPV2cp9Eub0NiLx3Dxyppb7dJrJqvE.srubRuQGIzDfJKFYw HPqSa0c6bckzBhwkq1uoS06H3mvNd4rxvEUi4r3SDI9auBG4X_yRNIMbZvXWyIW.GzG3cZuHcCt3 2w8kEw2dP_3AJnnOYbfFTg8yGGlHJJ5yd7X9buO2D0NLdpDnkRI73qF75fQ5zHrtMk.r551mG5qp Pb6UJ290jhs0ay7aa80isN83AjHlPICR82OygMqV0jTWatCE0oSkHe1gFruDABariJtHUsOI1WAs TWBns.FqqwVPpBcQ5z_t7t.lHF4HNaLgRMoWVa0cznk.cfSE6ZzazlKLTViJcv3pmGXBZJY46wOP TVQ3W.YszxqjtfdcF6lf3KrmV7iMSsuZgP6MZQtsKof7JK0TNaEWKTiysoQGRpATWrdz9pDmIz8v 9Lh3vJkbs.uaTW_.Q.LElIlVkh8Zn2BpCpsQyMNlFHBa6hLFOe_udKd53ay.c7W.hHvrNfbeaxYa mW1sBxSqJJGb6jBavzfzAvycgrIiGFdWkju_Qe_ukddgx_ymdted2R1bmYdKHETXAyAYwCWiWboJ YmdamnbCRLQihfWxrXE1jB9GAKt6MXo1uGQ1PW2HQtpVllVNOforxwYPIY5l_5D1H7POXb3_phs2 lXvlWc8Glquu7MqEuobKxUAA3G9SqJNqWQt5DruL2vYiK7Mk2mzLMmwZGk3Eh1iobssfy8vUOApa pwbMYmDX4cCtKzKgY3i8NGdVx2DMzbYG13F2PPr0iJVuKeyumjd4F91HMUHkodd6N4Vo5M5ISaav C6jbxd4TkGoRcZFh9gyaQcQYQjsZgwtNNafEiLmYMD8D9BF7FqBa8P8tLEUglCZX1lGWLFAwTWyl 2Cw4Ri2uk1EBnIzfLCmldpCNzL7PwIvFSQGE_T2.vhjhZU7vJWAyoAJqqsQ8tJvB97GxGiJkrjTV O5Jp_W5m3hXU9o0mvCePAJvPPkpvs8LdLhI34ePtob3nBaSmxL5vqm34PAeKqJcI7aTWV6UkhWpb kb88gzwztRO8frKVcJCNP1J0MuTvt9_jPBBvSuiCIXh0FAw8Mi5Eb01H0IDeIuoG.ybdtA2hgfIY QUoK.kUd6loHCU6q7mqtew2IAsw8WsLN.DVD20gTp8J2fH.DaQZNGzuVsHA9RmDHQXFfUofl0ZO7 aGYxctkrs1RT531cokyGTOQe4b_T53VApDPqflwqkPEN.L4DofRtAFI.1MND8xfo2ybbKt48XCfO v857Nw.EtaMXyRpLb5c1RDo9naPnunB3BbVvNwWntzTqjkzX14KgIfY4ws3cyGxlwZUyvhWFcPM0 1AGjBIdmzFa6OY7.HqY8gCX1G2_EFrZjufIc_S.qH8BS.YGUF69X61kgI4vqKqPTyu0hp2qnXsUf eSPsPH2WV4Xegbs7PrdSSOqErXYl3bVH..pH503KDw7NU4t0kV01_GfsiCv7rf1FBoIOBMyx3l51 GIkVVzpp0wJKBhIr4mRws0cQWO4cJ2r4xK87bSw8Rh9OufmJQ1FRRu0.9w4zrYDxTVnRCGzz7x8X 9_f7Y7pPiAOpLJ_wuZgpQ4Z0GSSP0vQcgKkjQNdEJxRa5LfNnXYasNyjor6Srso0Nyq.sczBlNqN 6nIs_u07FXUQBwOgoK9ZKObTR7cZCVE82Hkict2R9c07oxqkrv4.EjKrKhGKDXGY5xUoJPwcPv0i sWY5DV9rHiMj1gbypcJcUFWQYWhxKmTachsH6oQqDUg39jfEtxGQiA3cf5uzJO9BGDZ7PIjDVads XhNAh12vvrOZZo4Mdye6bJcVPN34rnv_mMJFmwub6ClDClQsBc.jq9u2sLYk7ozdsgEIodD1dIFo e4D6Z6jo2_cUO4fFC7HgqoAEo9cnvcZz6Z1Y3KAMJaDzMpB3iUpFYr.3g80KtmqahA0NHMig9lJa NyzTw0Vnw7YC3uhx1KB76UJ5D5pvwd3HOc2vNwVqb22n8wnRz2B0gzNSYBqHMo4mPkohazpDS7xq zKVwoFSQ76RaDITdFaGQDsTxc.jVeUyKPepsC0PxI.KtAnwiRu78pi4crr4cOqPSOiWBt1uDnQo3 BDD.GEPgJ.w28uBKY7gsopDc2lKWleIOF_K2.RPAulRtShysOg_Uox5.yqgZ.0wQmSB7znHnAVLs gr0UJAEUYxItUHjg9wb0f4ZTy3IFNRFErv0qZCeAOYTNyoiD5mzhqyzjL7mjnQvr_SV.vJilbJPK 7CRfdunmW0jgIoB2XVb0NzSLTYskl9sUh1W8Ul9cCs3Ugd4rfUK6ABVr1kXQ0VGIkpR5A5t8.H1Y nj9FF_HQAM2NujTlcrEIPijmE7G91.8j7LzXG3j_Njo3nW8zynZep45bcymV63n7UOv4YGcwNvsE vGlWtAHk- X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic316.consmr.mail.ne1.yahoo.com with HTTP; Thu, 29 Apr 2021 00:30:34 +0000 Received: by kubenode544.mail-prod1.omega.ne1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 2f946537c7dc5f2f0f7cee8b94811a39; Thu, 29 Apr 2021 00:30:29 +0000 (UTC) Subject: Re: [FlyRotary] Re: PSRU thrust bearing/washer To: Rotary motors in aircraft References: Message-ID: Date: Wed, 28 Apr 2021 20:30:26 -0400 User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------EB3ADE5283605D4C688BEB3E" Content-Language: en-US X-Antivirus: Avast (VPS 210428-4, 04/28/2021), Outbound message X-Antivirus-Status: Clean X-Mailer: WebService/1.1.18138 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol Apache-HttpAsyncClient/4.1.4 (Java/16) Content-Length: 12243 This is a multi-part message in MIME format. --------------EB3ADE5283605D4C688BEB3E Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Answer from Tracy: just plain nylon. Only times he seen  a "melted" snubber is when no end clearance -- constant friction As far as I recall, the only time the snubber should see any load is when prop is driving the engine (helical gears pushing input shaft away from thrust bearing). Like when power is pulled back for rapid decent. Finn On 4/28/2021 5:38 PM, Finn Lassen finn.lassen@verizon.net wrote: > Looks like a nylon rod drilled, chamfered and cut to length with a > saw. I guess it must also have been sanded to the thickness required > for the drive it was supplied with. > > Nothing fancy and definitely does not look like an of-the-shelf item. > > I'll try to remember to ask him exactly what material next time I see him. > > Something else must be going on here. You don't have a restriction in > the oil supply line, right? > > Finn > > On 4/28/2021 4:13 PM, Matt Boiteau mattboiteau@gmail.com 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 >> , > > 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://wwwmcmastercom/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 >> >> >> ------------------------------------------------------------------------ >> Avast logo >> >> This email has been checked for viruses by Avast antivirus software. >> www.avast.com >> >> >> <#m_1371103534129407806_m_-7051677788530083193_m_7353984697272831048_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> > --------------EB3ADE5283605D4C688BEB3E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit
Answer from Tracy: just plain nylon.
Only times he seen  a "melted" snubber is when no end clearance -- constant friction

As far as I recall, the only time the snubber should see any load is when prop is driving the engine (helical gears pushing input shaft away from thrust bearing). Like when power is pulled back for rapid decent.

Finn 

On 4/28/2021 5:38 PM, Finn Lassen finn.lassen@verizon.net wrote:
Looks like a nylon rod drilled, chamfered and cut to length with a saw. I guess it must also have been sanded to the thickness required for the drive it was supplied with.

Nothing fancy and definitely does not look like an of-the-shelf item.

I'll try to remember to ask him exactly what material next time I see him.

Something else must be going on here. You don't have a restriction in the oil supply line, right?

Finn

On 4/28/2021 4:13 PM, Matt Boiteau mattboiteau@gmail.com 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://wwwmcmastercom/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


Avast logo

This email has been checked for viruses by Avast antivirus software.
www.avast.com




--------------EB3ADE5283605D4C688BEB3E--