X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-vw0-f52.google.com ([209.85.212.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with ESMTP id 4311718 for flyrotary@lancaironline.net; Wed, 12 May 2010 07:58:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.52; envelope-from=rwstracy@gmail.com Received: by vws9 with SMTP id 9so428305vws.25 for ; Wed, 12 May 2010 04:58:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=wP5bNx152aVpXKKuyORfu6QaoO+plmOyJftvRjdkUeM=; b=I7xhbNYue9QTq+YqsawHP///tOCbJU9g2DRik8MOLKbWfmTZNoy4ugmDPrIeGlc7Va GZuqkso4n3piqeZ79EbblG7Jf/4j34ztQm8k0IOITU57IWTV12hL97eHNUX1ACN2DGnt uJmr4SS7sJ1+VJ+wFGkXE1ntCIyiEelIrpqS0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=gJgxvAlBPFXI/6ZZfjhcBggvP82r/PTFoxx6fiieF/YWAxQuv1s8DDA7lgDJsOlx+O nGCBqcHYlmgH10nMz7vnA1sI+Clia6mAtAvOqgwc9wV//lLjGf7fsMHvrYxAdllBRvYB YH1R7w43P45IcUyhjSTiiHrL6tpondhRDhPy4= MIME-Version: 1.0 Received: by 10.220.108.198 with SMTP id g6mr5605297vcp.82.1273665500487; Wed, 12 May 2010 04:58:20 -0700 (PDT) Sender: rwstracy@gmail.com Received: by 10.220.167.69 with HTTP; Wed, 12 May 2010 04:58:20 -0700 (PDT) In-Reply-To: References: Date: Wed, 12 May 2010 07:58:20 -0400 X-Google-Sender-Auth: 5HwDnAGs4TKgK8Srk8cZNk9kD7M Message-ID: Subject: Re: [FlyRotary] Re: alternative water pump From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00c09f8e5cceb821ab0486645b91 --00c09f8e5cceb821ab0486645b91 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable *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. M= y 20 B only has 1" water lines. 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 i= s > 1.25 inches, so the water would be traveling at 628 feet per minute at th= at > flow rate. That is over 7 miles per hour! > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > 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. > > > > 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 del= ta 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 > --00c09f8e5cceb821ab0486645b91 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable the water would be traveling at 628 feet per minute at that flow rate.=A0 That is over 7=20 miles per hour!

That doesn't sound unreasonable to me.=A0 I'd = take more if I could get it.=A0 My 20 B only has 1" water lines.
<= br>Tracy

On Wed, May 12, 20= 10 at 12:34 AM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Al,

Are you sure o= f the 40 GPM?=A0 That seems like a lot.=A0 My radiator in/out is 1.25 inches, so the water would be traveling at 628 feet per minute at that flow rate.=A0 That is over 7 miles per hour!

=A0

Bill B<= /font>

=A0

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Al Gietzen
Sent: Wednesday, May 12, 2= 010 12:24 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: alternative water pump

=A0

Will the Renesis pump= capacity pump enough water to cool a 350 hp 3-rotor. =A0Who knows? =A0Frankly, I don't even know how much flow we're talking about here. =A0For safety sake, if a better imp= eller was available, I would most likely buy it. =A0

=A0

Mark;

As a point of reference; 260 hp, and 30 degree delta T needs about 40 gpm. You c= an scale up or down from there.=A0 At 6000 rpm I=92m guessing the pump will give you that, but of course depends on the delta P around the loop.=A0 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


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