X-Virus-Scanned: clean according to Sophos on Logan.com From: "James R. Osborn" Received: from mail-pd0-f180.google.com ([209.85.192.180] verified) by logan.com (CommuniGate Pro SMTP 6.1c4) with ESMTPS id 7482300 for flyrotary@lancaironline.net; Wed, 11 Feb 2015 13:11:00 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.180; envelope-from=rxcited@gmail.com Received: by pdjy10 with SMTP id y10so5896040pdj.6 for ; Wed, 11 Feb 2015 10:10:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:message-id:mime-version:subject:date:references :to:in-reply-to; bh=syJmlK74Yquhpa4UIzF0pJDw7lydWyeAAZ7Ochcvfrw=; b=zxcugMiwahWNNBWsE17TyBuY2g9NV5P0O+x05m9rhWHZr/blBBwKTSOZzaKKGC7pcY 4IuI3Nk46icR7Oyffayxc4W0MsmoKqyyv5gc/EdssUtmOLfIc8YuQxXgs+9UU7+P9qR0 rNImhtTRxii0r4Y2ML6RISALiASI2zR19+vcd6t0OaukWbPGKclc+/hZBQX1W4z0iJHP 6JfPWCytx18tK+uQaQtCNbE4nNI1CORmMyfqxS/CS+96mCbWxmtC8708TAfTtB2MLe0G m9EscBuKVg0QPaSjMfD+Ssa4rbrgGinQCH9ijBletPwOq/h85ZBnLYl93UmcFV4KwDIF NfNQ== X-Received: by 10.66.192.194 with SMTP id hi2mr15585120pac.57.1423678226200; Wed, 11 Feb 2015 10:10:26 -0800 (PST) Return-Path: Received: from jrosborn-m76.lbl.gov (jrosborn-m76.lbl.gov. [128.3.128.169]) by mx.google.com with ESMTPSA id em4sm1517633pbc.46.2015.02.11.10.10.25 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 11 Feb 2015 10:10:25 -0800 (PST) Content-Type: multipart/alternative; boundary="Apple-Mail=_895EE51A-82A8-46E9-8209-5B2A9D65F9DD" Message-Id: Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2070.6\)) Subject: Re: [FlyRotary] 20B EnginesRe: [FlyRotary] 20B Engines Date: Wed, 11 Feb 2015 10:10:24 -0800 References: To: Rotary motors in aircraft In-Reply-To: X-Mailer: Apple Mail (2.2070.6) --Apple-Mail=_895EE51A-82A8-46E9-8209-5B2A9D65F9DD Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 You can still get a 20B for $5k, but the provenance is less well known. = Judging from the photos online I have seen, you can=E2=80=99t always see = the tops of the rotor housings to be able to read the codes. What=E2=80=99= s the aviation take on the Racing Beat aluminum side housings for the = 20B? They also do peripheral ports on brand new rotor housings. How = about a 20B three rotor, peripheral intake, all aluminum motor? Drool? http://www.racingbeat.com/RX7-1993-1995/Rotor-Intermediate-Housings.html = = = http://www.racingbeat.com/RX7-1986-1992/Rotor-Intermediate-Housings/11024.= html = =E2=80=94 James > On Feb 10, 2015, at 9:48 PM, cbeazley = wrote: >=20 > Some old posts referencing even older posts: > http://mail.lancaironline.net:81/lists/flyrotary/Message/54134.html = >=20 > 20B was between 2nd and 3rd gen with features of both - IIRC, the = center-iron is NoLongerAvailable. Later model C/D versions were more = coveted for massive turbo installations. > Last I checked, the heavier 20B and 93-95 rear irons were still = available (new) if you really feel the need to change out a rear iron - = IIRC, both could work, 1 extra bolt on the 20B auto iron. > You used to be able to buy a 20B for 3-5k with all the fixin's long = block/front clip. > For 10K you could do an aftermarket 4rotor install and make everyone = drool ;) >=20 > Cheers > C >=20 >>=20 >> Mailing List flyrotary@lancaironline.net = Archived Message #61569 = = <> back to list = >> From: James R. Osborn = >> Subject: Re: [FlyRotary] 20B Engines >> Date: Tue, 10 Feb 2015 09:28:01 -0800 >> To: Rotary motors in aircraft = = >>=20 >> = >> More importantly to me, how do you ensure you are getting a newer one = when you buy an engine? I have seen them for sale from importers in the = $10k+ price range. Is there a particular year of Eunos Cosmo engine to = look for? >>=20 >>> On Feb 10, 2015, at 8:15 AM, Bill Bradburry = > = wrote: >>>=20 >>> Marc. >>> What are the numbers that indicate a later version? >>> Bill=20 >>> =20 >>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net = ]=20 >>> Sent: Tuesday, February 10, 2015 9:56 AM >>> To: Rotary motors in aircraft >>> Subject: [FlyRotary] Re: 20B Engines >>> =20 >>> There are 3 series of 20B engines IIRC. The center housing and the = crank on some of the earlier versions was reported to be a weak = link=E2=80=A6=E2=80=A6..later versions had mods to some internal parts. = I have a later version of the 20B. You can tell from the rotor housing = engine numbers (where the 20B is in black surround). >>> Marc >>> =20 >>> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net = ]=20 >>> Sent: Friday, February 06, 2015 4:17 PM >>> To: Rotary motors in aircraft >>> Subject: [FlyRotary] Re: 20B Engines >>> =20 >>> 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......... >>> =20 >>> Kelly >>> =20 >>> On Fri, Feb 6, 2015 at 6:49 AM, Mark Steitle = > = wrote: >>> Kelly,=20 >>>=20 >>> 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. =20 >>>=20 >>> 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.=20 >>>=20 >>> Mark >>> =20 >>> On Fri, Feb 6, 2015 at 12:00 AM, Kelly Troyer = > = wrote: >>> Mark Steitle or other 20B Drivers, >>> =20 >>> 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....... >>> =20 >>> 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 = ?......... =20 >>> =20 >>> --=20 >>> Kelly Troyer >>>=20 >>=20 >>=20 >> Subscribe: Feed = , = Digest = , = Index = . >> Unsubscribe = >> Mail to ListMaster = --Apple-Mail=_895EE51A-82A8-46E9-8209-5B2A9D65F9DD Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 You can still get a 20B for $5k, but the provenance is less = well known.  Judging from the photos online I have seen, you = can=E2=80=99t always see the tops of the rotor housings to be able to = read the codes.  What=E2=80=99s the aviation take on the Racing = Beat aluminum side housings for the 20B?  They also do peripheral = ports on brand new rotor housings.  How about a 20B three rotor, = peripheral intake, all aluminum motor?  Drool?

http://www.racingbeat.com/RX7-1993-1995/Rotor-Intermediate-Hous= ings.html
http://www.racingbeat.com/RX7-1986-1992/Rotor-Intermediate-Hous= ings/11024.html

=E2=80=94 James

On = Feb 10, 2015, at 9:48 PM, cbeazley <flyrotary@lancaironline.net> wrote:

=20 =20
Some old posts referencing even older posts:
http://mail.lancaironline.net:81/lists/flyrotary/Message/54134.html=

20B was between 2nd and 3rd gen with features of both - IIRC, the center-iron is NoLongerAvailable.  Later model C/D versions = were more coveted for massive turbo installations.
Last I checked, the heavier 20B and 93-95 rear irons were still available (new) if you really feel the need to change out a rear iron - IIRC, both could work, 1 extra bolt on the 20B auto iron.
You used to be able to buy a 20B for 3-5k with all the fixin's long block/front clip.
For 10K you could do an aftermarket 4rotor install and make everyone drool ;)

Cheers
C

Mailing List flyrotary@lancaironline.net Archived Message #61569 <p_leftarrow.png> <p_rightarrow.png><= /span> back to list

=
From: James R. Osborn <flyrotary@lancaironline.ne= t>
Subject: Re: [FlyRotary] 20B Engines
Date: Tue, 10 Feb 2015 09:28:01 -0800
To: Rotary motors in aircraft <flyrotary@lancaironline.ne= t>
<TextHeaders.gif>

<TextLetter.gif>
More importantly to me, how do you ensure you are getting a newer one when you buy an engine? =  I have seen them for sale from importers in the $10k+ price range.  Is there a particular year of Eunos = Cosmo engine to look for?

On Feb 10, 2015, at 8:15 AM, Bill Bradburry <flyrotary@lancaironline.net> wrote:

Marc.
What are = the numbers that indicate a later version?
Bill 
 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] 
Sent: Tuesday, February 10, 2015 9:56 AM
To: Rotary motors in aircraft
= Subject: [FlyRotary] Re: 20B Engines
 
There are 3 series of 20B engines IIRC. The center housing and the crank on some of the earlier versions was reported to be a weak link=E2=80=A6=E2=80=A6..later = versions had mods to some internal parts. I have a later version of the 20B. You can tell from the rotor housing engine numbers (where the 20B is in black surround).
Marc
 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] 
Sent: Friday, February 06, 2015 4:17 PM
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 <flyrotary@lancaironline.net> 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

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Unsubscribe
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