X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 10 Dec 2008 18:17:38 -0500 Message-ID: X-Original-Return-Path: Received: from iron7.midco.net ([24.220.0.83] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3352134 for lml@lancaironline.net; Wed, 10 Dec 2008 02:25:41 -0500 Received-SPF: none receiver=logan.com; client-ip=24.220.0.83; envelope-from=zoelt@sio.midco.net X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AlI1AOH9PkkY3KiHPGdsb2JhbACCQyyHEIhCfQEBAQE1AbxKgwc X-IronPort-AV: E=Sophos;i="4.33,746,1220245200"; d="scan'208,217";a="313468400" Received: from host-135-168-220-24.midco.net (HELO YOUR105B4D3942) ([24.220.168.135]) by out.vip.midco.net with ESMTP; 10 Dec 2008 01:25:04 -0600 From: X-Original-To: "'Lancair Mailing List'" References: Subject: RE: [LML] Re: Cabin heat LNC4 X-Original-Date: Wed, 10 Dec 2008 01:25:45 -0600 X-Original-Message-ID: <003801c95a98$8473cc00$6401a8c0@YOUR105B4D3942> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0039_01C95A66.39D95C00" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: Thread-Index: Aclai0dNe4MF95KHR7qF2qZS36BbSgADSOAg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Antivirus: avast! (VPS 000737-2, 04/30/2007), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0039_01C95A66.39D95C00 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Thanks Bob, I'll check the position of the venturis Sincerely, Tim _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Robert Pastusek Sent: Tuesday, December 09, 2008 11:51 PM To: lml@lancaironline.net Subject: [LML] Re: Cabin heat LNC4 Tim wrote. I have a major increase in air flow , pressure(relieved by relief valve), and noise when I select cabin heat or defrost air. Should this air be reduced by venturis in warm-side pressure hoses from the intecooler? Tim, the IV-P is supposed to have sonic nozzles mounted where the air is ducted from the turbo-to-intercooler pipe. The early models mounted this nozzle in the pressurization feed lines, with SCEET tubing on either side of the nozzle. I followed the lead of later airplanes and welded the sonic nozzles directly to the side-mounted intercoolers and ran the SCEET tubing from the nozzle to the mixer box. If you don't have these sonic nozzles installed, I doubt you'd be able to generate the 38.5 PSI of boost needed to get full power from the engine, so it's likely they are there; perhaps not where you'd expect to find them? It is normal for the cabin to receive more air and heat when the proportioning valve (the gold coffee-can distribution box on the upper engine side of the firewall) is switched by the heat knob to send only the air coming directly off the turbos into the cabin. The "cool" side of the distribution can takes air that has passed through the side and front-mounted intercoolers, thereby reducing both the temperature and the pressure. You should definitely be able to tell the difference. Hope this helps! Bob ------=_NextPart_000_0039_01C95A66.39D95C00 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks = Bob,

I’ll check the position of = the venturis

Sincerely,<= /p>

Tim

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Robert Pastusek
Sent: Tuesday, December = 09, 2008 11:51 PM
To: = lml@lancaironline.net
Subject: [LML] Re: Cabin = heat LNC4

 

Tim = wrote…

I have a major increase in air flow , = pressure(relieved by relief valve), and noise when I select cabin heat or defrost air.  = Should this air be reduced by venturis in warm-side pressure hoses from the intecooler?

 

Tim, the = IV-P is supposed to have sonic nozzles mounted where the air is ducted from the turbo-to-intercooler pipe. The early models mounted this nozzle in the pressurization feed lines, with SCEET tubing on either side of the = nozzle. I followed the lead of later airplanes and welded the sonic nozzles = directly to the side-mounted intercoolers and ran the SCEET tubing from the nozzle = to the mixer box. If you don’t have these sonic nozzles installed, I = doubt you’d be able to generate the 38.5 PSI of boost needed to get full = power from the engine, so it’s likely they are there; perhaps not where you’d expect to find them?

 <= /o:p>

It is = normal for the cabin to receive more air and heat when the proportioning valve (the = gold coffee-can distribution box on the upper engine side of the firewall) is switched by the heat knob to send only the air coming directly off the = turbos into the cabin. The “cool” side of the distribution can = takes air that has passed through the side and front-mounted intercoolers, thereby reducing both the temperature and the pressure. You should definitely be = able to tell the difference.

 <= /o:p>

Hope this = helps!


Bob

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