X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ey-out-2122.google.com ([74.125.78.27] verified) by logan.com (CommuniGate Pro SMTP 5.3.7) with ESMTP id 4312414 for flyrotary@lancaironline.net; Wed, 12 May 2010 18:46:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.78.27; envelope-from=msteitle@gmail.com Received: by ey-out-2122.google.com with SMTP id 22so411863eye.3 for ; Wed, 12 May 2010 15:45:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=MkUvqVgRAA2ZFQUjSNjArGRPQJ1JFuYGVR2ufF7Udcw=; b=CNpVJz/blpPr6ExKgVTrFOAtcWtkZdqBmd8RT1QtL+GzNmV35WaTFjsjo+/iXuG3Pd K9B7kW3ukAqAtgkIcM4C5wrYclqNHcLWBFZdZQz5Q7I0YYh6O2w9UMfiKPg2yXsqB29Y TgBficzxA6BC08PR2ptxRbxVOqwHZVONGSxSk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=sYTEho9CwK02IteKhuC3HF29uCRpVdQOrcy8TulMCeysQh0TQXwAgoqfhFRexSUpJq nRsG2hcJfnyggy7488YuE50jU3T2HuGMxcw6wHIuNuIfT5ytlLAqxGJfETebJnUabaki wCAoJ9yK3k8N2p0PmqJunn61oqrzPcPd34V30= MIME-Version: 1.0 Received: by 10.213.43.146 with SMTP id w18mr2868232ebe.25.1273704332448; Wed, 12 May 2010 15:45:32 -0700 (PDT) Received: by 10.213.9.208 with HTTP; Wed, 12 May 2010 15:45:32 -0700 (PDT) In-Reply-To: References: Date: Wed, 12 May 2010 17:45:32 -0500 Message-ID: Subject: Re: [FlyRotary] Re: alternative water pump From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001636256de948d72904866d667a --001636256de948d72904866d667a Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Tracy, Are you running a 13b or 20b pump on your 3-rotor? Mark On Wed, May 12, 2010 at 4:44 PM, George Lendich wrote= : > 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. > > 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 t= hat >> 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-roto= r. >> Who knows? Frankly, I don't even know how much flow we're talking abou= t >> 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 gp= m. >> You can scale up or down from there. At 6000 rpm I=92m guessing the pum= p 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 de= lta 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 >> > > --001636256de948d72904866d667a Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Tracy,=A0

Are you running a 13b or 20b pump on your 3-ro= tor? =A0

Mark=A0

On Wed, May 12, 2010 at 4:44 PM, George Lendich <lendich@aanet.com.au> wro= te:
=A0Isn'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.=A0 That is over 7 mil= es=20 per hour!

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

Tracy

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

<= span style=3D"font-size:10pt;color:navy;font-family:Arial">Al,

<= span style=3D"font-size:10pt;color:navy;font-family:Arial">Are you sure of = the=20 40 GPM?=A0 That seems like a lot.=A0 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.=A0 That is over 7 miles per hour!

<= span style=3D"font-size:10pt;color:navy;font-family:Arial">= =A0

<= span style=3D"font-size:10pt;color:navy;font-family:Arial">Bill=20 B

<= span style=3D"font-size:10pt;color:navy;font-family:Arial">= =A0

<= font face=3D"Times New Roman" size=3D"3">

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:=20 [FlyRotary] Re: alternative water pump

=A0

Will the Renesis pump = capacity pump=20 enough water to cool a 350 hp 3-rotor. =A0Who knows? =A0Frankly, I=20 don't even know how much flow we're talking about here. =A0For = safety=20 sake, if a better impeller was available, I would most likely buy it.= =20 =A0

=A0

<= /div>

Mark;

As a=20 point of reference; 260 hp, and 30 degree delta T needs about 40 gpm. Y= ou=20 can scale up or down from there.=A0 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.=A0 If you=92re expecting 350 hp, things might be marginal; basica= lly=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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