X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with ESMTP id 4312424 for flyrotary@lancaironline.net; Wed, 12 May 2010 17:45:14 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (mail.aanet.com.au [203.24.100.34]) by poplet2.per.eftel.com (Postfix) with ESMTP id 9E3231736C8 for ; Thu, 13 May 2010 05:44:36 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 814C0BEC009 for ; Thu, 13 May 2010 05:44:34 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: alternative water pump Date: Thu, 13 May 2010 07:44:34 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0014_01CAF270.21635F60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 X-Antivirus: avast! (VPS 100512-1, 05/12/2010), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0014_01CAF270.21635F60 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Isn't the 13B water pump rated at 53 gpm before cavitation. George ( down under) the water would be traveling at 628 feet per minute at that flow rate. = That is over 7 miles per hour! That doesn't sound unreasonable to me. I'd take more if I could get = it. My 20 B only has 1" water lines.=20 Tracy On Wed, May 12, 2010 at 12:34 AM, Bill Bradburry = wrote: Al, Are you sure of the 40 GPM? That seems like a lot. My radiator = in/out is 1.25 inches, so the water would be traveling at 628 feet per = minute at that flow rate. That is over 7 miles per hour! Bill B -------------------------------------------------------------------------= --- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Al Gietzen Sent: Wednesday, May 12, 2010 12:24 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: alternative water pump Will the Renesis pump capacity pump enough water to cool a 350 hp = 3-rotor. Who knows? Frankly, I don't even know how much flow we're = talking about here. For safety sake, if a better impeller was = available, I would most likely buy it. =20 Mark; As a point of reference; 260 hp, and 30 degree delta T needs about = 40 gpm. You can scale up or down from there. At 6000 rpm I=92m guessing = the pump will give you that, but of course depends on the delta P around = the loop. If you=92re expecting 350 hp, things might be marginal; = basically higher delta T, which reduces overall effectiveness of the = system a bit. But if you have some excess capacity there - - I guess = you=92ll find out. Al G ------=_NextPart_000_0014_01CAF270.21635F60 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

Isn't the 13B water pump rated at = 53 gpm=20 before cavitation.

George ( down under)

the = water would be=20 traveling at 628 feet per minute at that flow rate. That is over = 7 miles=20 per hour!

That doesn't sound unreasonable to me. I'd = take=20 more if I could get it. My 20 B only has 1" water lines.=20

Tracy

On Wed, May 12, 2010 at 12:34 AM, Bill = Bradburry <bbradburry@bellsouth.net>= =20 wrote:

Al,

Are you = sure of the=20 40 GPM? That seems like a lot. My radiator in/out is = 1.25=20 inches, so the water would be traveling at 628 feet per minute at = that flow=20 rate. That is over 7 miles per hour!

Bill=20 B

From:=20 Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al = Gietzen
Sent: Wednesday, May 12, 2010 = 12:24=20 AM
To: Rotary = motors in=20 aircraft
Subject: = [FlyRotary] Re: alternative water pump

Will the Renesis pump = capacity pump=20 enough water to cool a 350 hp 3-rotor. Who knows? = Frankly, I=20 don't even know how much flow we're talking about here. For = safety=20 sake, if a better impeller was available, I would most likely buy = it.=20

Mark;

As a=20 point of reference; 260 hp, and 30 degree delta T needs about 40 = gpm. You=20 can scale up or down from there. At 6000 rpm I=92m guessing = the pump=20 will give you that, but of course depends on the delta P around the=20 loop. If you=92re expecting 350 hp, things might be marginal; = basically=20 higher delta T, which reduces overall effectiveness of the system a = bit. But=20 if you have some excess capacity there - - I guess you=92ll find=20 out.

Al=20 = G

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