X-Virus-Scanned: clean according to Sophos on Logan.com From: "Kelly Troyer" Received: from mail-ob0-f171.google.com ([209.85.214.171] verified) by logan.com (CommuniGate Pro SMTP 6.1c4) with ESMTPS id 7474491 for flyrotary@lancaironline.net; Sun, 08 Feb 2015 03:21:46 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.171; envelope-from=keltro@gmail.com Received: by mail-ob0-f171.google.com with SMTP id gq1so20336473obb.2 for ; Sun, 08 Feb 2015 00:21:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=/KIKpkHSHwss2F8Ygx3rPaRET3EpjJ19Je9pNVykcaw=; b=eM2C5DBAN1Hfa/pDT5+5e6Xwg07QemWyoyaAiL2DQ4O5gk+dg7gt6OwfJl83686q0w fj+FEFoAfDkt3wmTKw+5ni9E48EWJhIPMHXpT0wSk+YjAIMrviq61n4VISU3tNuJhWxN TFaiGww+vllBHXvqWTfyAeuK2zQDHyrSWs0IMcv6XYU0XOE6P535Zi7mId87F2TKYA49 P7RIX5J+Xyr5aArwEjcqDSmi9E+XuPdHDz6LAbv2Fo7CaNE0Et+0O6d0LEMkIBkoJ4M/ RfJmDEiQCn6PvsOhEw6bXAJDYRoLKiiZupztPIrk2HAmA22i1W4wmnI2LuedlMJ9Tmtf HIEw== MIME-Version: 1.0 X-Received: by 10.202.84.70 with SMTP id i67mr172274oib.129.1423383672771; Sun, 08 Feb 2015 00:21:12 -0800 (PST) Received: by 10.202.94.130 with HTTP; Sun, 8 Feb 2015 00:21:12 -0800 (PST) In-Reply-To: References: Date: Sun, 8 Feb 2015 02:21:12 -0600 Message-ID: Subject: Re: [FlyRotary] Re: 20B Engines To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001a113b0b9031db56050e8f56fe --001a113b0b9031db56050e8f56fe Content-Type: text/plain; charset=UTF-8 Thanks Neil........Good info and thanks for sharing.........Keep the group appraised of his progress ....... Kelly Troyer On Fri, Feb 6, 2015 at 10:43 PM, Neil Unger wrote: > Re ruined rotor housings, A bloke in OZ is way down the path of making > sleeves to fit inside ruined rotor housings. He cuts out the inside level > with the inside edge of the inner side O ring groove, then presses in a > sleeve that makes the housing back to new specks, and give you a new inner > O ring lip as well. Believe he is at the stage of testing the first ones > now. Something to watch, and in the meantime do not throw any damaged > rotor housings away. Neil. > > *From:* Kelly Troyer > *Sent:* Saturday, February 07, 2015 9:17 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: 20B Engines > > Thanks Mark........That is the info I was looking for............I > happen to have a 13B Cosmo that has the later housings > and I had only read about the reinforced housings......... > > Kelly > > On Fri, Feb 6, 2015 at 6:49 AM, Mark Steitle > wrote: > >> Kelly, >> >> I wouldn't hesitate to use an early 20b. The early 20b housings are >> plenty robust enough for a/c use. The beefier irons could be an issue if >> you're building a turbo race engine due to the higher loads imposed during >> up shifting and down shifting. We don't experience any of those loads. >> >> I'm pretty certain that my 20b is an early model and I have not >> experienced any issues with irons cracking around the dowels. The weakest >> area is along the inner walls of the o-ring grooves nearest the water >> jackets. If your o-rings aren't to factory specs, you run the risk of >> cracking an o-ring wall which ruins the housing. Been there, done that. >> If you treat the engine with the same care you would a certified a/c >> engine, then you won't have any trouble with longevity. >> >> Mark >> >> On Fri, Feb 6, 2015 at 12:00 AM, Kelly Troyer < >> flyrotary@lancaironline.net> wrote: >> >>> Mark Steitle or other 20B Drivers, >>> >>> I am looking at a 20B that looks to be an early one before they >>> added additional >>> metal in the dowel/oil passage area of the iron housings because of some >>> that I have >>> read developed cracks in this area in service in the autos I >>> presume....... >>> >>> Can you tell me if this a potential problem for the 20B in our >>> aircraft use ?.......Also >>> can you tell me if your 20B has the later reinforced housings >>> ?......... >>> >>> -- >>> Kelly Troyer >>> >>> >> > > > > > -- --001a113b0b9031db56050e8f56fe Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Thanks Neil........Good info and thanks for sharing.......= ..Keep the group appraised of his progress .......

Kelly= Troyer

On Fri= , Feb 6, 2015 at 10:43 PM, Neil Unger <flyrotary@lancaironline.n= et> wrote:
Re ruined rotor housings,=C2=A0 A bloke in OZ is way down the path of= =20 making sleeves to fit inside ruined rotor housings. He cuts out the inside = level=20 with the inside edge of the inner side O ring groove, then presses in a sle= eve=20 that makes the housing back to new specks, and give you a new inner O ring = lip=20 as well.=C2=A0 Believe he is at the stage of testing the first ones now.=C2= =A0=20 Something to watch, and in the meantime do not throw any damaged rotor hous= ings=20 away.=C2=A0 Neil.
=C2=A0
Sent: Saturday, February 07, 2015 9:17 AM
To: Rotary motors in aircraft <= /div>
Subject: [FlyRotary] Re: 20B Engines
=C2=A0
Thanks Mark........That is the info I was looking for.....= .......I=20 happen to have a 13B Cosmo that has the later housings=20
and I had only read about the reinforced housings.........
=C2=A0
Kelly
=C2=A0
On Fri, Feb 6, 2015 at 6:49 AM, Mark Steitle <flyrotary@lancaironline.net> wrote:
Kelly,

I wouldn't hesitate to use an early 20b.=C2= =A0 The=20 early 20b housings are plenty robust enough for a/c use.=C2=A0 The beefie= r=20 irons could be an issue if you're building a turbo race engine due to= the=20 higher loads imposed during up shifting and down shifting.=C2=A0 We don&#= 39;t=20 experience any of those loads.=C2=A0

I'm pretty certain= that my=20 20b is an early model and I have not experienced any issues with irons=20 cracking around the dowels.=C2=A0 The weakest area is along the inner wal= ls of=20 the o-ring grooves nearest the water jackets. If your o-rings aren't = to=20 factory specs, you run the risk of cracking an o-ring wall which ruins th= e=20 housing.=C2=A0 Been there, done that.=C2=A0 If you treat the engine with = the=20 same care you would a certified a/c engine, then you won't have any t= rouble=20 with longevity.

Mark
=C2=A0
On Fri, Feb 6, 2015 at 12:00 AM, Kelly Troyer = <flyrotary@lancaironline.net> wrote:
Mark Steitle or other 20B Drivers,=20
=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0 I am looking at a 20B that looks to be an= =20 early one before they added additional
metal in the dowel/oil passage area of the iron housings because o= f=20 some that I have
read developed cracks in this area in service in the autos I=20 presume.......
=C2=A0
=C2=A0=C2=A0=C2=A0=C2=A0 Can you tell me if this a potential probl= em=20 for the 20B in our aircraft use ?.......Also
can you tell me if your 20B has the later reinforced housings=20 ?.........=C2=A0
=C2=A0
--
Kelly Troyer

<= /div>
=C2=A0


=C2=A0
=C2=A0



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