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=oakJ7VqGoKDDa4dePaZOHw==:117 a=3YhXtTcJ-WEA:10 a=x7bEGLp0ZPQA:10 a=K7ySfSCCDxUA:10 a=988u29NvAAAA:8 a=Ia-xEzejAAAA:8 a=5lucXWJGAAAA:8 a=pGLkceISAAAA:8 a=_6GpL_ENAAAA:8 a=o1OHuDzbAAAA:8 a=pW8B2vQ6AAAA:8 a=7g1VtSJxAAAA:8 a=jThZ7_-JAAAA:8 a=7V3Ex-Kf4XDg6LEDy10A:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=6aJk38oll7IeEpkg94AA:9 a=0wZksiVivpnr79MI:21 a=sIFWCFSNc_AA:10 a=LwX-U-nOfP1m2u8RUeUA:9 a=Hyr7ibVrZbSyE6gl:18 a=KQqxNPgzF0kA:10 a=VEiTNn8F7TgA:10 a=FoLopk8cqeGNkQHUyrUA:9 a=-XggfrMJsOVGF3Wk:18 a=Sj2NSuvQFUVvf78q7IKw:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=tjNemD4wtFR24VrVMQME:22 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=NM4QHZ20jVRG-2vQPwNQ:22 a=grOzbf7U_OpcSX4AJOnl:22 a=NVbvhy2gKIdozzgvQOKv:22 From: "Matt Boiteau mattboiteau@gmail.com" Received: from mail-lj1-f174.google.com ([209.85.208.174] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1463235 for flyrotary@lancaironline.net; Thu, 29 Apr 2021 10:13:52 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.174; envelope-from=mattboiteau@gmail.com Received: by mail-lj1-f174.google.com with SMTP id o16so76569241ljp.3 for ; Thu, 29 Apr 2021 07:13:52 -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=5dEX+uQAG3IXw6X3BsvfuEShjbkhw3s9PPeSKI90DQ0=; b=Lgf+iymz8EEHbr6BBN8sbz7Q3T8slKuZxFdtJ/RlWAPo1RT9GXDZJHO1zI49Evmeic AsbUOUf4H1WTGEr+lGuQmi17v5J2mwH29wykrNjbgc6h5qN9HD79c7muKDyW17tejurO 57zcswgIL9o7BrbUTGf5qQbV8vZJqvf2Ye5CbiEK/j0MNJyH8TTAH2DFDZdlsu0dK3bH i8enQNQait34AksTv3f+TOBSYG2Drd175xye9/wqvdbSaeawm4cJhGLqMEQFWM8jVE5p i2WPW/hN+a5J2MwF5AnvaWWZvTcJ384LcDuPFR2LtMh1m/Yq2Dqwt0VJnl5gi4Xpc7da SONg== 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=5dEX+uQAG3IXw6X3BsvfuEShjbkhw3s9PPeSKI90DQ0=; b=bBw6O5PJdhyZ/YkfUSijQZAqRp7a2N6hwLpahQWcZQ8v7UCJR2g/5Xpwv3XsXJPgy2 sc2SvS1UpI8EUftDT/WFVcXrOAfz/PE1IIIoyBBff9Ieax/rJ4/VrJ4NmXisAHJxDVv1 1I2CFL02Vv5QXgjeUvPrAUiSsCwMN6BGDUBaDLj2W4dhis2Vd9b/BnqkG1YdyZtkdRAW NF0D0CKLaaKfVh0droTkxmuY8MOUUPtVrY3dk0h/qcWG1aihww7mH4FVk5ejOHeRVA/m KqkJFHQmy8Qmsu3zvOJ2L2zCohKyGtlJt7o4i24EKF3nny7JE3V2mHjFGix5MJKP1uk2 YZHw== X-Gm-Message-State: AOAM532Oshkw29Z1xfBbksbAEWXq4Vp4klbcUESBitaMELxNgybV3tLM fTje76Y+u+C+Ce+DJevOwIldAmtYFwag/qMxLCcDB068XHNdfg== X-Google-Smtp-Source: ABdhPJw3B25LcaKeGTiAo7sYC7IMEecuyD6Vj3CdgeherlvQ0HlDfHId4pyviTXwXQ1YBRN/Wdri0SC1mY+QcjZ+j0U= X-Received: by 2002:a05:651c:104e:: with SMTP id x14mr1211155ljm.235.1619705613941; Thu, 29 Apr 2021 07:13:33 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Thu, 29 Apr 2021 10:13:22 -0400 Message-ID: Subject: Re: [FlyRotary] Re: PSRU thrust bearing/washer To: Rotary motors in aircraft Content-Type: multipart/related; boundary="000000000000c3123705c11d19a9" --000000000000c3123705c11d19a9 Content-Type: multipart/alternative; boundary="000000000000c3123605c11d19a8" --000000000000c3123605c11d19a8 Content-Type: text/plain; charset="UTF-8" From what I've talked with Neil about, it sounds like it's just a flat washer. (round stock on lathe). I'll find it easier cutting it out of a flat sheet though One of my last flights, high speed cruise Oil pan 228F Oil rad 210F PSRU 212F I have a leaf blower and digital magnetometer, will work on ducting the oil cooler better next. Will need some turning vanes. - Matt Boiteau On Thu, Apr 29, 2021 at 9:04 AM Bobby Hughes BHughes@qnsinc.net < flyrotary@lancaironline.net> wrote: > Matt, > > > > I know of one person on the list that made a new snubber from round stock > on a lathe. Was the PSRU designed for a flat snubber or chamfered? What is > your oil exit temperature? > > > > Bobby > > > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] > *Sent:* Wednesday, April 28, 2021 10:23 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: PSRU thrust bearing/washer > > > > Straight PTFE has a Durometer 50D-65D. I'll go with it. > > https://www.mcmaster.com/9266K82/ > > Prop I have is a 74" ground adjustable Sensenich. Pitched to 22degrees. > Static full power is 2200 while flying is 2600. With the 3.17 gearing, > engine RPM is 8250. > > Finn, I'm not sure, the restrictor is part of the fitting. Neil, can you > pipe in here? I won't say I know anything like Tracy and them do, but a > planetary gear, doesn't it only need a splash of oil for lub? > > - Matt Boiteau > > > > > > On Wed, Apr 28, 2021 at 7:38 PM Charlie England ceengland7@gmail.com < > flyrotary@lancaironline.net> wrote: > > Does 'glass filled' mean fiberglass? Any abrasive risk if the PTFE does > start to wear? Looks like they also have straight PTFE sheet stock, but I > didn't look at durometer. > > Are you running some monster 8' diameter prop with that ratio? > > Charlie > > On 4/28/2021 5:46 PM, Matt Boiteau mattboiteau@gmail.com wrote: > > Squished / deformed is the verbage I used back in 2019 about it. I can't > seem to find any pictures on it, but I remember it being deformed up pretty > good. I've been battling issues in the past with the vulcanization rubber > of Neil's cushion drive was coming apart. I've put on Tracey's Cushion > drive in the meanwhile. > > Dry fitting everything (no oring and no snubber) with the input shaft > sitting all the way down on the prop shaft, I have 0.085" clearance. To get > the 5-10thou gap, I would need a snubber 0.075" - 0.080" thick. The closest > I can get is 1/16" thick, which is 0.0625. > > > > I found this stuff for the snubber, high temp. Can cut out a washer from > it. > https://www.mcmaster.com/8636K11/ > > > > There is a restrictor in the fitting going into the PSRU. I have a temp > gauge on the PSRU, and it stays consistent with the oil. I have parts to > add a PSI sensor to the back half of the PSRU to see if things are draining > okay. > > > - Matt Boiteau > > > > > > On Wed, Apr 28, 2021 at 5:29 PM Charlie England ceengland7@gmail.com < > flyrotary@lancaironline.net> wrote: > > 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. > > > > [image: Image removed by sender.] > > > 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 > 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: Image removed by sender. Avast logo] > > > This email has been checked for viruses by Avast antivirus software. > www.avast.com > > > > > > > > *Disclaimer* > > The information contained in this communication from the sender is > confidential. It is intended solely for use by the recipient and others > authorized to receive it. If you are not the recipient, you are hereby > notified that any disclosure, copying, distribution or taking action in > relation of the contents of this information is strictly prohibited and may > be unlawful. > > This email has been scanned for viruses and malware, and may have been > automatically archived by *Mimecast Ltd*, an innovator in Software as a > Service (SaaS) for business. Providing a *safer* and *more useful* place > for your human generated data. Specializing in; Security, archiving and > compliance. To find out more Click Here > . > --000000000000c3123605c11d19a8 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
From what I've talked with Neil about= , it sounds like it's just a flat washer. (round stock on lathe). I'= ;ll find it easier cutting it out of a flat sheet though
One of my last = flights, high speed cruise

Oil pan 228F
Oil rad 210F
PSRU= 212F

I have a leaf blower and digital magnetometer,= will work on ducting the oil cooler better next. Will need some turning va= nes.

- Matt Boiteau


On Thu, Apr 29, = 2021 at 9:04 AM Bobby Hughes BHughes@= qnsinc.net <flyrotary= @lancaironline.net> wrote:

Matt,

=C2=A0

I know of one person on the list that made a= new snubber from round stock on a lathe. Was the PSRU designed for a flat = snubber or chamfered? What is your oil exit temperature?

=C2=A0

Bobby

=C2=A0

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wednesday, April 28, 2021 10:23 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: PSRU thrust bearing/washer

=C2=A0

Straight PTFE has a Durometer 50D-65D. I'll go w= ith it.

https://www.mcmaster.com/9266K82/

Prop I have is a 74" ground=C2=A0adjustable Sensenich. Pitched to 22de= grees. Static full power is 2200 while flying is 2600. With the 3.17 gearin= g, engine RPM is 8250.

Finn, I'm not sure, the restrictor is part of the fitting. Neil, can yo= u pipe in here? I won't say I know anything like Tracy and them do, but= a planetary=C2=A0gear, doesn't it only need a splash of oil for lub?

- Matt Boiteau

=C2=A0

=C2=A0

On Wed, Apr 28, 2021 at 7:38 PM Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:=

Does 'glass filled' mean fiberglass? Any abr= asive risk if the PTFE does start to wear? Looks like they also have straig= ht PTFE sheet stock, but I didn't look at durometer.

Are you running some monster 8' diameter prop with that ratio?

Charlie

On 4/28/2021 5:46 PM, Matt Boiteau mattboiteau@gmail.com wrote:

Squished / deformed is the verbage I used back in 20= 19 about it. I can't seem to find any pictures on it, but I remember it= being deformed up pretty good. I've been battling=C2=A0issues in the p= ast with the vulcanization rubber of Neil's cushion drive was coming apart. I've put on Tracey's Cushion drive in the = meanwhile.

Dry fitting everything (no oring and no snubber) with the input shaft sitti= ng all the way down on the prop shaft, I have 0.085" clearance. To get= the 5-10thou gap, I would need a snubber 0.075" - 0.080" thick. = The closest I can get is 1/16" thick, which is=C2=A00.0625.<= /u>

=C2=A0

I found this stuff for the snubber, high temp. Can c= ut out a washer from it.=C2=A0
https://www= .mcmaster.com/8636K11/

=C2=A0

There is a restrictor in the fitting going into the = PSRU. I have a temp gauge on the PSRU, and it stays consistent with the oil= . I have parts to add a PSI sensor to the back half of the PSRU to see if t= hings are draining okay.


- Matt Boiteau

=C2=A0

=C2=A0

On Wed, Apr 28, 2021 at 5:29 PM Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:=

The confusing thing to me is how it got hot enough t= o melt nylon; over 400 degrees F. That seems a lot hotter than than the sha= ft or bearings should ever get.=C2=A0

=C2=A0

3D"Image=

Virus-free. www.avast.com

=C2=A0

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.

=C2=A0

Neil's uses a rubber oring, so we test endplay w= ithout it. Then adding the oring will add the nessessary clearance in end p= lay.

=C2=A0

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

=C2=A0

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

=C2=A0

=C2=A0

=C2=A0

=C2=A0

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 i= n Australia.

=C2=A0

After my fly off hours, tearing down the plane to in= spect everything. The Ultra-Low-Friction Oil-Embedded Thrust Bearing is bro= ken 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 w= hat I can use, or why this happens?

- Matt Boiteau

=C2=A0 

--
Homepage:=C2=A0 http://www.flyrotary.com/
Archive and UnSub:=C2=A0=C2=A0 http://mail.lancaironline=
.net:81/lists/flyrotary/List.html

=C2=A0

3D"I=

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



=C2=A0



Disclaimer

The information contained in this communication from th= e sender is confidential. It is intended solely for use by the recipient an= d others authorized to receive it. If you are not the recipient, you are he= reby notified that any disclosure, copying, distribution or taking action i= n relation of the contents of this information is strictly prohibited and m= ay be unlawful.

This email has been scanned for viruses and malware,= and may have been automatically archived by Mimecast Ltd, an innova= tor in Software as a Service (SaaS) for business. Providing a safer= and more useful place for your human generated data. Specializing = in; Security, archiving and compliance. To find out more Click Here.

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