X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.3.5) with ESMTP id 1025030 for flyrotary@lancaironline.net; Tue, 28 Jun 2005 15:20:51 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.6.194.9]) by imf23aec.mail.bellsouth.net with ESMTP id <20050628192007.YQXR2460.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Tue, 28 Jun 2005 15:20:07 -0400 Received: from rd ([65.6.194.9]) by ibm66aec.bellsouth.net with ESMTP id <20050628192006.OCRQ5308.ibm66aec.bellsouth.net@rd> for ; Tue, 28 Jun 2005 15:20:06 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Single Rotor Research Date: Tue, 28 Jun 2005 14:20:07 -0500 Message-ID: <000001c57c16$65710e80$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C57BEC.7C9B0680" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C57BEC.7C9B0680 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I've had a look at the Turbo exhaust on the 13B and the overlap is quite = a bit more, as the extra area is in hight, compared to that of the NA = housing. The Turbo actually opens at the same time as the NA housing but closes later, as you alluded to. So the Turbo housing is 'OUT' for the single PP. ( Hope your taking notes here Rusty).=20 =20 Interesting observation, but are you sure your turbo housing hasn't been ported? I just set an 87-88 6-port housing on top of an REW housing, = and the exhaust ports are identical in side, shape, and location. The only difference is the 6-port has the splitter. Take a look at Paul Yaw's article on port timing basics- http://www.yawpower.com/techindx.html = He gives the timing for intake and exhaust on lots of different housings, = and he shows the timing to be the same also. =20 =20 For fun, check out the Picture Gallery. Start at picture number 25, and you'll see his PP modification. =20 =20 If those reading this are confused or not considering PP take no notice = - this is mainly for Rusty's information for when he converts to PP.=20 =20 I still want to do a test one day, with junk housings, but I've got a = lot better things to do with my time at the moment. I did spend a whole = morning reading PP posts on the RX-7 Club list the other day, and it just = reinforced what I've been told about this being a bad idea. There were some nice = pics of people boring their own ports though. =20 =20 Cheers, Rusty (thumbing my nose at the "experts" with my NPG-R coolant) =20 =20 ------=_NextPart_000_0001_01C57BEC.7C9B0680 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
I've had a look at the Turbo exhaust on the 13B and the overlap is = quite a=20 bit more, as the extra area is in hight, compared to that of the NA = housing.
The Turbo actually opens at the same time as the NA housing but = closes=20 later, as you alluded to.
So the Turbo housing is 'OUT' for the = single=20 PP.
( Hope your taking notes here Rusty). 
 
Interesting=20 observation, but are you sure your turbo housing hasn't been = ported?  I=20 just set an 87-88 6-port housing on top of an REW housing, and the = exhaust ports=20 are identical in side, shape, and location.  The only = difference=20 is the 6-port has the splitter.  Take a look at Paul Yaw's = article on=20 port timing basics-  http://www.yawpower.com/te= chindx.html   =20 He gives the timing for intake and exhaust on lots of different = housings,=20 and he shows the timing to be the same also.   =
 
For = fun, check=20 out the Picture Gallery.  Start at picture number 25, and you'll = see his PP=20 modification.   
 
If those reading this are confused or not considering PP = take no=20 notice - this is mainly for Rusty's information for when = he converts=20 to PP. 
 
I = still want to=20 do a test one day, with junk housings, but I've got a lot better things = to=20 do with my time at the moment.  I did spend a whole morning = reading PP=20 posts on the RX-7 Club list the other day, and it just reinforced what = I've been=20 told about this being a bad idea.  There were some nice pics = of people=20 boring their own ports though.  
 
Cheers,
Rusty (thumbing=20 my nose at the "experts" with my NPG-R coolant)
 
 
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