Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 16 Jun 2003 14:02:19 -0400 Message-ID: X-Original-Return-Path: Received: from empnet.com ([64.35.144.3] verified) by logan.com (CommuniGate Pro SMTP 4.1b8) with ESMTP id 2431311 for lml@lancaironline.net; Mon, 16 Jun 2003 13:57:49 -0400 Received: from S0026506945 (e-64-35-150-87.empnet.net [64.35.150.87]) by empnet.com (Postfix) with SMTP id 545366ABF for ; Mon, 16 Jun 2003 10:58:43 -0700 (PDT) X-Original-Message-ID: <00b201c33430$ecd73ff0$57962340@S0026506945> From: "Mike Custard" X-Original-To: Subject: A/Cs for Lancairs, to scoop or not to scoop. X-Original-Date: Mon, 16 Jun 2003 10:57:47 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AF_01C333F6.1EFACC30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_00AF_01C333F6.1EFACC30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I think that anyone interested in buying an A/C system or as we like = to call it in the Lancairs " life support system " should do their = homework. I have installed and used both systems, two of the Airflow = systems in my earlier days and several of the Aero Cool systems now. I = have tested both systems in the Dominican Republic, New Orleans, Florida = and across the U.S. to Oregon and have found that both systems work = equally as well in all temperatures. It is simply a question of whether = you want a scoop on the bottom of your plane or not. I found that the = Airflow system puts the CG a little forward and the engine driven Aero = Cool system doesn't change it at all because the pump and mounting = brackets mount on the front of the engine, about 15 lbs. and the = condenser mounts in the tail. When we install the condenser in the tail = we also remove the pressure compensator and install the elevator push = rod conversion system that I build and have sold to more than 50 Lancair = IV-P builders. This eliminates about 3-5 lbs. from the tail. Both = systems require about the same amount of labor, installing the condenser = in the tail of the plane after the top is glued on is not much fun but = neither is laying on your back gluing on the scoop, bid taping the = edges, micro fill, body working and the paint. Other than that they are = about the same. The weight of our fan by no means weighs more than the fiberglass = scoop. I think that both systems weigh about the same, at least close = enough. We have started using new smaller and lighter hoses with = re-usable fittings that has lightened our system and made the hoses much = easier to run through the fuselage and the fittings do not require a = crimper. Since I also fly the planes, I know that the scoop slows the = plane down. But, does 5 kts really matter when your flying at almost 300 = KTAS, that's up to the buyer. As far as comprimising the structual = integrity of the plane, boy there's a long shot, we installed the Aero = Cool system with the two holes in the bottom in the last Turbine that we = built. The plane has a few times seen over 310 KIAS, yes indicated at = low altitude, with a sharp pull up at the end of the pass and a = comfortable wing over. There is nothing magic about one from the other, they both work = exactly the same. So it really just boils down to, do you want a scoop = or no scoop.=20 Last comment, I just think it is little tacky for someone to knock = another persons product simply to try and make theirs look better. Let's = leave that to the politicians!! Mike Custard Aero Cool, LLC. Advanced Aviation, Inc. flybymike@empnet.com ------=_NextPart_000_00AF_01C333F6.1EFACC30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
    I = think that anyone=20 interested in buying an A/C system or as we like to call it in the = Lancairs "=20 life support system " should do their homework. I have installed and = used both=20 systems, two of the Airflow systems in my earlier days and several of = the Aero=20 Cool systems now. I have tested both systems in the Dominican Republic, = New=20 Orleans, Florida and across the U.S. to Oregon and have found that both = systems=20 work equally as well in all temperatures. It is simply a question of = whether you=20 want a scoop on the bottom of your plane or not. I found that the = Airflow system=20 puts the CG a little forward and the engine driven Aero Cool system = doesn't=20 change it at all because the pump and mounting brackets mount on the = front of=20 the engine, about 15 lbs. and the condenser mounts in the tail. When we = install=20 the condenser in the tail we also remove the pressure compensator and = install=20 the elevator push rod conversion system that I build and have sold to = more than=20 50 Lancair IV-P builders. This eliminates about 3-5 lbs. from the tail. = Both=20 systems require about the same amount of labor, installing the condenser = in the=20 tail of the plane after the top is glued on = is=20 not much fun but neither is laying on your back gluing on the scoop, bid = taping=20 the edges, micro fill, body working and the paint. Other than that they = are=20 about the same.
    The = weight of our=20 fan by no means weighs more than  the fiberglass scoop. I think = that both=20 systems weigh about the same, at least close enough. We have started = using new=20 smaller and lighter hoses with re-usable fittings that has lightened our = system=20 and made the hoses much easier to run through the fuselage and the = fittings do=20 not require a crimper. Since I also fly the planes, I know that the = scoop slows=20 the plane down. But, does 5 kts really matter when your flying at almost = 300=20 KTAS, that's up to the buyer. As far as comprimising the structual = integrity of=20 the plane, boy there's a long shot, we installed the Aero Cool system = with the=20 two holes in the bottom in the last Turbine that we built. The plane has = a few=20 times seen over 310 KIAS, yes indicated at low altitude, with a sharp = pull up at=20 the end of the pass and a comfortable wing over.
    There is=20 nothing magic about one from the other, they both work exactly the = same. =20 So it really just boils down to, do you want a scoop or no scoop.=20
    Last = comment, I=20 just think it is little tacky for someone to knock another persons = product=20 simply to try and make theirs look better. Let's leave that to the=20 politicians!!
 
Mike Custard
Aero Cool, LLC.
Advanced Aviation, Inc.
 
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