X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 13 Feb 2008 13:08:44 -0500 Message-ID: X-Original-Return-Path: Received: from bay0-omc3-s22.bay0.hotmail.com ([65.54.246.222] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2728295 for lml@lancaironline.net; Wed, 13 Feb 2008 12:47:47 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.54.246.222; envelope-from=randystuart@hotmail.com Received: from hotmail.com ([65.55.139.22]) by bay0-omc3-s22.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 13 Feb 2008 09:47:07 -0800 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 13 Feb 2008 09:47:07 -0800 X-Original-Message-ID: Received: from 68.183.63.181 by BAY134-DAV12.phx.gbl with DAV; Wed, 13 Feb 2008 17:47:02 +0000 X-Originating-IP: [68.183.63.181] X-Originating-Email: [randystuart@hotmail.com] X-Sender: randystuart@hotmail.com From: "Randy" X-Original-To: "Lancair Mailing List" References: Subject: Cold Induction X-Original-Date: Wed, 13 Feb 2008 09:47:04 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0090_01C86E25.639BCF60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-OriginalArrivalTime: 13 Feb 2008 17:47:07.0186 (UTC) FILETIME=[73674120:01C86E68] X-Original-Return-Path: randystuart@hotmail.com This is a multi-part message in MIME format. ------=_NextPart_000_0090_01C86E25.639BCF60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable It's hard to get your LNC-2 past 200 kts., that seems to be the wall on = the design for these rockets. There's about a dozen of these Lancair's = in my area so it's easy to compare data from one build to another. = Getting past the 200 kt barrier is the hard part. Adding HP is = exponential, takes allot of ponies to get a few more knots. So you have = to look elsewhere to get speed. Weight, straight airframe, rigging, = drag. This includes cooling drag, flap reflex, balance, just to name a = few. And since everyone of our Lancair's are different there's no real = hard data and set ways to build. You just have to ask and experiment... = That's the whole point. My LNC-2 is on the lighter side, about 1150, and I have small cooling = inlets, flap reflex, direct RAM air, electronic ignition, small wing = tips, small landing gear, small tail. When I do my flight testing I'm = using a calibrated Micro Encoder for TAS, CAS, DA and a Garmin 430W to = get accurate ground speeds and winds aloft. I also use a VM-1000 for all = my engine monitoring.=20 As I said in my posting about installing the ECI cold induction system, = I did do more then just add the cold induction. It certainly makes HP = and a better performing engine, no doubt..... But it also allowed me to = cut allot of weight off the front and the cowl, make the cowl much more = aerodynamic, create a better RAM air system and change the cooling = differential. This all adds up to more knots and a better flying = Lancair.=20 An obvious change is in the bottom of the cowl, looking at the before = and after pictures, you can see how the airflow now "holds" the nose up = instead of the old cowl adding drag. This helps take the pressure off = the tail, kind of the effect of reflexed flaps. Doing this allows the = airframe to go faster. Less drag =3D More speed. The tail is drag.=20 More RAM =3D More HP. The least amount of air you force into the cooling = inlets =3D Less drag. Performance exhaust =3D More HP. More HP + Less = Drag =3D More speed.=20 These are just a few of the many changes and mods we can do to increase = performance and have a better flying Lancair. =20 Randy Stuart LNC-2 ------=_NextPart_000_0090_01C86E25.639BCF60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
It's hard to get = your LNC-2=20 past 200 kts., that seems to be the wall on the design for these = rockets.=20 There's about a dozen of these Lancair's in my area so it's easy to = compare data=20 from one build to another. Getting past the 200 kt barrier is the hard = part.=20 Adding HP is exponential, takes allot of ponies to get a few more knots. = So you=20 have to look elsewhere to get speed. Weight, straight airframe, rigging, = drag.=20 This includes cooling drag, flap reflex, balance, just to name a few. = And since=20 everyone of our Lancair's are different there's no real hard data = and set=20 ways to build.  You just have to ask and experiment... That's the = whole=20 point.
My LNC-2 is on the = lighter=20 side, about 1150, and I have small cooling inlets, flap reflex, direct = RAM air,=20 electronic ignition, small wing tips, small landing gear, small tail. = When I do=20 my flight testing I'm using a calibrated Micro Encoder for TAS, CAS, DA = and a=20 Garmin 430W to get accurate ground speeds and winds aloft. I also = use a=20 VM-1000 for all my engine monitoring.
As I said in my = posting about=20 installing the ECI cold induction system, I did do more then just add = the cold=20 induction. It certainly makes HP and a better performing engine, no = doubt.....=20 But it also allowed me to cut allot of weight off the front and the = cowl, make=20 the cowl much more aerodynamic, create a better RAM air system and = change the=20 cooling differential. This all adds up to more knots and a better flying = Lancair.
An obvious change = is in the=20 bottom of the cowl, looking at the before and after pictures, you can = see how=20 the airflow now "holds" the nose up instead of the old cowl adding drag. = This=20 helps take the pressure off the tail, kind of the effect of reflexed = flaps.=20 Doing this allows the airframe to go faster. Less drag =3D More speed. = The tail is=20 drag.
More RAM =3D More = HP. The least=20 amount of air you force into the cooling inlets =3D Less drag. = Performance exhaust=20 =3D More HP. More HP + Less Drag =3D More speed. =
These are just a = few of the=20 many changes and mods we can do to increase performance and have a = better flying=20 Lancair. 
 
Randy=20 Stuart
LNC-2
 
------=_NextPart_000_0090_01C86E25.639BCF60--