X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 30 [X] Return-Path: Received: from mail09.syd.optusnet.com.au ([211.29.132.190] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTPS id 2040236 for flyrotary@lancaironline.net; Sat, 12 May 2007 17:36:08 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.190; envelope-from=lendich@optusnet.com.au Received: from george (d58-105-120-215.dsl.nsw.optusnet.com.au [58.105.120.215]) by mail09.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l4CLZN3h006949 for ; Sun, 13 May 2007 07:35:25 +1000 Message-ID: <001c01c794dd$75cd71b0$d778693a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EC2 smoke question Date: Sun, 13 May 2007 07:35:26 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01C79531.461FE520" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C79531.461FE520 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Lynn. What's your take on the runner length for 6,000? I believe you add the = plenum length to the tube length for the total length, So I guess the = longer/ bigger the plenum the shorter the tube has to be. George (Down under) 240HP at 6000 RPM.=20 That is outstanding HP, even on a California dyno. Any port pictures = or porting open and close figures?=20 Sounds like the one to replicate. A typical Weber intake system from = a race shop would be quite short. Not ideal for 6,000 RPM. Better at = 9,500 to 10,000 RPM, looking for 335 HP. I remembered this from Go Karts, for small parts and even sections of = intake runner, fab the molds from kiddies modeling clay. Cast small = parts in epoxy and chopped roving or carbon fiber. Mold the intake = flanges (aluminum) right into epoxy and after a layer of epoxy has = hardened, fiberglass tape wrap the clay runner and around the flange and = let it cure.=20 Wash out the clay in kerosene and a bucket. Parts molded against the = clay come out slick and shiny. Insides of runners fantastic. If the clay = seems too oily, let the mold dry for a few days before molding.=20 Lynn E. Hanover=20 -------------------------------------------------------------------------= ----- See what's free at AOL.com. ------=_NextPart_000_0019_01C79531.461FE520 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Lynn.
What's your take on the runner length for 6,000? I = believe you=20 add the plenum length to the tube length for the total length, So I = guess the=20 longer/ bigger the plenum the shorter the tube has to = be.
George (Down under)
 
 
240HP at=20 6000 RPM.
 
That is outstanding HP, even on a California dyno. Any port = pictures or=20 porting open and close figures?
 
 Sounds like the one to replicate. A typical Weber intake = system=20 from a race shop would be quite short. Not ideal for 6,000 RPM. Better = at=20 9,500 to 10,000 RPM,
looking for 335 HP.
 
I remembered this from Go Karts, for small parts and even = sections of=20 intake runner, fab the molds from kiddies modeling clay. Cast small = parts in=20 epoxy and chopped roving or carbon fiber. Mold the intake flanges = (aluminum)=20 right into epoxy and after a layer of epoxy has hardened, fiberglass = tape wrap=20 the clay runner and around the flange and let it cure.
Wash out the clay in kerosene and a bucket. Parts molded = against the=20 clay come out slick and shiny. Insides of runners fantastic. If the = clay seems=20 too oily, let the mold dry for a few days before molding.
 
Lynn E. Hanover 



See what's free at AOL.com.=20
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