X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=JejCUnCV c=1 sm=1 tr=0 a=t5jYxNuvhYjlTBaXT5kw8A==:117 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=x7bEGLp0ZPQA:10 a=UoOxVkw5FWwA:10 a=E5NmQfObTbMA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=on22okXAAAAA:8 a=7g1VtSJxAAAA:8 a=Ljysxnc3y6s4iiF4ysYA:9 a=Iv2OlrUtVjb7wrS2:21 a=xv1FdnkJSmbgcepE:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=neQ5RsxJOIriPxyeDdgA:9 a=KWAm80ThpBSXJlyB:21 a=fFJuyttveeTMOV2O:21 a=mK0TKektOaj3uvQG:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=NPqpj5bUEVj9vR1HIonK:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "John Downing farmerjohn36x@gmail.com" Received: from mail-qt1-f171.google.com ([209.85.160.171] verified) by logan.com (CommuniGate Pro SMTP 6.2.12) with ESMTPS id 12543503 for flyrotary@lancaironline.net; Wed, 08 May 2019 20:50:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.171; envelope-from=farmerjohn36x@gmail.com Received: by mail-qt1-f171.google.com with SMTP id f24so609583qtk.11 for ; Wed, 08 May 2019 17:50:51 -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=j+hvLFZzYmOjBDysmdrJHQA6tN0wdMntSPYwE0vUBtg=; b=kLg/S7/WJLLD7Fu9nHt7WQxb48SV75y4So3LXYso1ozgcxpchXpypNvLxIcS1+/EJe TnjlLSv7yWCJlkybs/0Gz5WK2urTOfLHDrQ1XMcytONrtgT8Na1En64eKwHxiRmFu0SG I671N5gVUWcDSthwIKbrOO0AWgx6ogSKLQwSJGfrM6fTRGZsUt9dnBdu4eYC9iMlCCDl vXTlU+VIIYHH98BHzQeO22QWp0UvlifTIUVGXOswjzZk88s0vJRnafeeacIaNc2eavZe RrCGapPLwVtt5bSKkQCBBzVe1ab8ulagsXB5gMraojj6nuONUxYQGAnQZnyzoNrog2p6 DljQ== 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=j+hvLFZzYmOjBDysmdrJHQA6tN0wdMntSPYwE0vUBtg=; b=nhHsaHnda7rUX5pCHpMMq02zsna9qAlkishAWIsUw/GYmvxZgJPtI5BJ4RE4oViU5O aXQhToYwWoWPN+TH2Q5rsndHW4Z/Fnc2DmaXcZd6XNCq63f8PD7lNO0ACQ3KDhUgpYCn lQqbbzhOwYq1eS6xGfX5FZtfswcv+o09Nfka7N2BD0SvrqoghnPqLwRPcD/pKbuSel5b 4bGgzMALm2ZPTCom6fpYF5PpgaA9nwUjBB4XIYhaLlf2GZL12bo4x9ZAFL9qNpqG55iB OAc71FjjgocgJlhLHnefHoboFo94YkfL6msZ9CcxycE5D9EDDxXipbtdFtFcxY0XbvQJ GfmQ== X-Gm-Message-State: APjAAAXDuIG3qUgBaKBdLRb36C2C+QLipldF1Kqyts87FuYE7yYbxuM9 V4EZ1ED1qdys530Wb5z68+eTTSXqqGXCVT/L3gcq6g== X-Google-Smtp-Source: APXvYqyXz0BGaSttbbfd+244as53Z2ggyG1viTbV2euxGkAwhSGMFKCYZXj2G/gfDQS/pbjrmN/1+XZXtGDFLSD06fY= X-Received: by 2002:ac8:4a84:: with SMTP id l4mr1007770qtq.374.1557363033914; Wed, 08 May 2019 17:50:33 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 8 May 2019 20:50:22 -0400 Message-ID: Subject: Re: [FlyRotary] Re: Venting the Reduction Drive To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000006c42ae058869d6e2" --0000000000006c42ae058869d6e2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Be careful with the venting, on my Marcotte redrive the venting was not adequate and the prop shaft seal blew out and caused a fire and an off airport landing which nearly destroyed me and the airplane. Like be very cautious. John Downing, RX7 with Marcotte redrive in Witman W 10. On Tue, May 7, 2019 at 11:15 PM Matt Boiteau mattboiteau@gmail.com < flyrotary@lancaironline.net> wrote: > I've been experimenting on Neil's PSRU with sealing it up. Only adding a > breather vent on the rear housing. So far I've only done ground testing, > but all seems well enough to fly with it soon enough. The Tygon house in > the picture was only to see the oil flow, it's capped off now. I ran gear > oil 70w-140 and it was way to thick and came out the breather vent, so we= nt > back down to my normal engine oil 20w-50. Filled half full, but I think I > can go a little less, haven't tested the idle level yet. > > I have a temp sensor (1/3 down), and a digital level sensor (half way) > installed in the rear housing as well. > > - Matt Boiteau > > On 2019-05-07 12:32:26 PM, Steven W. Boese SBoese@uwyo.edu < > flyrotary@lancaironline.net> wrote: > If the original return line was not enlarged, the "vent" line simply acte= d > as an additional return line and my gearboxes operated completely filled > with oil. > > Steve Boese > > > On May 7, 2019, at 9:41 AM, Jeff Whaley jwhaley@datacast.com wrote: > > > > =E2=97=86 This message was sent from a non-UWYO address. Please exercis= e caution > when clicking links or opening attachments from external sources. > > > > > > Hi Steve, is the enlarging of the oil return necessary? > > I thought you first tried enlarging the return line expecting it to > improve draining, only to find no improvement until the vent line was > added. > > Jeff > > > > Jeff, > > At this point I have only 3 hr of flight time on the gearbox with the > modified drain and vent. I have not observed a significant effect with > respect to power absorption or heat generation. > > > > Connecting the vent line to the foot of the rotor housing was > ineffective even though this location was above the oil level. Connecting > the vent line to the area of the oil filler opening at the top of the > center iron allowed the gearbox to drain as intended. > > > > The most troublesome part of the modification was enlarging the oil > return to 1/2" NPT in the rotor housing foot. > > > > Steve Boese > > > > > > -- > > Homepage: http://www.flyrotary.com/ > > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --0000000000006c42ae058869d6e2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Be careful with the venting, on my Marcotte redrive the ve= nting was not adequate and the prop shaft seal blew out and caused=C2=A0 a = fire and an off airport landing
which nearly destroyed me and the airpl= ane.=C2=A0 Like be very cautious.=C2=A0 John Downing, RX7 with Marcotte red= rive in Witman W 10.=C2=A0

On Tue, May 7, 2019 at 11:15 PM Matt Boitea= u mattboiteau@gmail.com <flyrotary@lancaironline.net> wrote:
I've been experimenting on Neil= 's PSRU with sealing it up. Only adding a breather vent on the rear hou= sing. So far I've only done ground testing, but all seems well enough t= o fly with it soon enough. The Tygon house in the picture was only to see t= he oil flow, it's capped off now. I ran gear oil 70w-140 and it was way= to thick and came out the breather vent, so went back down to my normal en= gine oil 20w-50. Filled half full, but I think I can go a little less, have= n't tested the idle level yet.

I have a temp sensor (1/3 down),= and a digital level sensor (half way) installed in the rear housing as wel= l.

- M= att Boiteau

On 2019-05-07 12:32:26 PM, Steven W. Boese SBoese@uwyo.edu <flyrotary@lancaironline.net> wro= te:

If the origina= l return line was not enlarged, the "vent" line simply acted as a= n additional return line and my gearboxes operated completely filled with o= il.

Steve Boese

> On May 7, 2019, at 9:41 AM, Jeff Whaley jwhaley@datacast.com wrote:
>=20
> =E2=97=86 This message was sent from a non-UWYO address. Please ex= ercise caution when clicking links or opening attachments from external sou= rces.
>=20
>=20
> Hi Steve, is the enlarging of the oil return necessary?
> I thought you first tried enlarging the return line expecting it t= o improve draining, only to find no improvement until the vent line was add= ed.
> Jeff
>=20
> Jeff,
> At this point I have only 3 hr of flight time on the gearbox with = the modified drain and vent. I have not observed a significant effect with= respect to power absorption or heat generation.
>=20
> Connecting the vent line to the foot of the rotor housing was inef= fective even though this location was above the oil level. Connecting the = vent line to the area of the oil filler opening at the top of the center ir= on allowed the gearbox to drain as intended.
>=20
> The most troublesome part of the modification was enlarging the oi= l return to 1/2" NPT in the rotor housing foot.
>=20
> Steve Boese
>=20
>=20
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net:8= 1/lists/flyrotary/List.html

--
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<= /div>
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