X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail24.syd.optusnet.com.au ([211.29.133.165] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTPS id 944123 for flyrotary@lancaironline.net; Sat, 14 May 2005 18:00:16 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.133.165; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-58-51.dsl.nsw.optusnet.com.au [220.236.58.51]) by mail24.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j4ELxOKt023632 for ; Sun, 15 May 2005 07:59:26 +1000 Message-ID: <00a301c558d0$d2d28120$333aecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Tracy's and Bruce's style intakes Date: Sun, 15 May 2005 08:03:55 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A0_01C55924.A3F1E180" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_00A0_01C55924.A3F1E180 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageRusty, The inlet pipes length are not tuned, however apart from that I feel is = a reasonable way to go. I don't know what sort of power difference is = between a tuned inlet or the short tubes. It is however a KISS approach. George ( down under) Greetings, I guess I'm leaning toward building a new intake, and I'm thinking of = following what Tracy has done, which is also similar to the intake that = Bruce is selling. This certainly seems like the easy way to go, = especially if I make it square like Tracy's. Does anyone have any = better pics of either of these? I've seen the pics on Tracy's page, = and also the one that I think Bob White posted to the list. =20 At first, it would seem wrong to make this square, but since Tracy = used air horns inside the box, that seems to make it OK to me. The box = itself is just a big plenum, or reservoir of air, so if it's big enough, = I'm guessing the shape doesn't matter that much. =20 Bruce's, seems to be more conservatively sized. The main "log" = portion is about the sized of the TB, and the pipes go off the rounded = body of the intake. If I'm not mistaken, I've seen this sort of shape = on intakes for cars in the past, so it must work OK.=20 One thought that comes to mind is to make the intake body like = Tracy's, but with the injectors inside the box, pointing into the intake = tubes, ala Jerry Hey. It would be nice to have all the injectors = contained in the box in case one decides to leak. =20 Sorry for the rambling, just looking for ideas. =20 Cheers, Rusty (single rotor on the way from the Ebay guy) ------=_NextPart_000_00A0_01C55924.A3F1E180 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Rusty,
The inlet pipes length are not tuned, = however apart=20 from that I feel is a reasonable way to go. I don't know what sort of = power=20 difference is between a tuned inlet or the short tubes. It is however a = KISS=20 approach.
George ( down under)
Greetings,
 
I guess I'm = leaning=20 toward building a new intake, and I'm thinking of following what Tracy = has=20 done, which is also similar to the intake that Bruce is selling.  = This=20 certainly seems like the easy way to go, especially if I make it = square like=20 Tracy's.  Does anyone have any better pics of either of=20 these?   I've seen the pics on Tracy's page, and also the = one that I=20 think Bob White posted to the = list.  
 
At first, it = would seem=20 wrong to make this square, but since Tracy used air horns inside the = box, that=20 seems to make it OK to me.  The box itself is just a big plenum, = or=20 reservoir of air, so if it's big enough, I'm guessing the shape = doesn't matter=20 that much. 
 
Bruce's, = seems to be more=20 conservatively sized.  The main "log" portion is about the sized = of the=20 TB, and the pipes go off the rounded body of the intake.  If I'm = not=20 mistaken, I've seen this sort of shape on intakes for cars in the = past, so it=20 must work OK.
 
One thought = that comes to=20 mind is to make the intake body like Tracy's, but with the injectors = inside=20 the box, pointing into the intake tubes, ala Jerry Hey.  It would = be nice=20 to have all the injectors contained in the box in case one decides to=20 leak. 
 
Sorry for the = rambling,=20 just looking for ideas. 
 
Cheers,
Rusty (single = rotor on=20 the way from the Ebay guy)
 
 =20
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