X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-gy0-f180.google.com ([209.85.160.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5068063 for flyrotary@lancaironline.net; Fri, 29 Jul 2011 17:14:56 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.160.180; envelope-from=fluffysheap@gmail.com Received: by gyg4 with SMTP id 4so5572248gyg.25 for ; Fri, 29 Jul 2011 14:14:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=iW8D6I5IFyQx18qFEYeBfzcTZYejBcripf8TDyZCeb0=; b=qZYRebPD9tHemt5261R1pmxGvjGS0wTuz3t7xHQWtUvDdici5DRHSY/zfEI3Shqm6L JV179n6ks2/9+zW06lw+Hpl3bSNIXwABxbZU5EWYawRIfrbgp6Q3XI5aI7jTLPXjwpm2 Gs51JbeFB6HV8+oX4S4Himm4vONFXlRjmTxro= MIME-Version: 1.0 Received: by 10.42.179.10 with SMTP id bo10mr1429545icb.56.1311974059202; Fri, 29 Jul 2011 14:14:19 -0700 (PDT) Received: by 10.231.79.135 with HTTP; Fri, 29 Jul 2011 14:14:19 -0700 (PDT) In-Reply-To: References: Date: Fri, 29 Jul 2011 15:14:19 -0600 Message-ID: Subject: Re: [FlyRotary] Re: Coolant Restrictor Plate From: William Wilson To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=90e6ba6e850cc0d6d504a93bc315 --90e6ba6e850cc0d6d504a93bc315 Content-Type: text/plain; charset=ISO-8859-1 It has always seemed to me that the best thing to do is to install underdrive pulleys, which allow the water pump and alternator to turn at more normal speeds with the engine at high RPM. A restrictor in the system may cut down on cavitation but it doesn't do much for flow rate. These parts are designed to run with the engine at 2500-3000 RPM which is typical in the car. Better to adjust the system so they run at the right speed rather than try to make up for the excessive speeds elsewhere. Water Wetter is good stuff (and soap is about as good for cooling, except without any anti-corrosive properties) but has no antifreeze properties. If your aircraft is ever parked in below-freezing temperatures, you have to refill with real antifreeze. On Fri, Jul 29, 2011 at 12:36 AM, wrote: > ** > My SWAG ( a technical term, used in the military) for 5,500 would be that > 3/4" just now tried. Also the water wetter from Red Line oil company and > just plain water is the very best coolant. I used 10% glycol (for a higher > boiling number) half a teaspoon of Dawn dish soap (poor mans Water > Wetter) and a 17 pound Cap on a remote make up bottle. Three 3/16" holes in > a thermostat will cool the rotary at racing speeds on a cold day and the > engine will not even warm up. Had to drop back to the one 3/16" bypass hole > to get up to 150 degrees, with a third of the radiator taped over. > > Lynn E. Hanover > > In a message dated 7/28/2011 11:43:16 P.M. Paraguay Standard Time, > keltro@att.net writes: > > Lynn, > > What would a Wild Axx Guess be for a restrictor for our 5000 to 7000 rpm > range be > in your opinion (subject to each individual users testing of course) > whether it be in the > form of a smaller diameter return hose or a metal disc ??................. > > Kelly Troyer > > --90e6ba6e850cc0d6d504a93bc315 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable It has always seemed to me that the best thing to do is to install underdri= ve pulleys, which allow the water pump and alternator to turn at more norma= l speeds with the engine at high RPM.=A0 A restrictor in the system may cut= down on cavitation but it doesn't do much for flow rate.=A0 These part= s are designed to run with the engine at 2500-3000 RPM which is typical in = the car.=A0 Better to adjust the system so they run at the right speed rath= er than try to make up for the excessive speeds elsewhere.

Water Wetter is good stuff (and soap is about as good for cooling, exce= pt without any anti-corrosive properties) but has no antifreeze properties.= =A0 If your aircraft is ever parked in below-freezing temperatures, you hav= e to refill with real antifreeze.

On Fri, Jul 29, 2011 at 12:36 AM, <Lehanover@aol.com>= wrote:
My SWAG ( a technical term, used in the military) for 5,500 would be t= hat=20 3/4" just now tried. Also the water wetter from Red Line oil company a= nd just=20 plain water is the very best coolant. I used 10% glycol (for a higher boili= ng=20 number) half a teaspoon of Dawn dish soap (poor mans Water Wetter)=A0and a = 17=20 pound Cap on a remote make up bottle. Three 3/16" holes in a thermosta= t will=20 cool the rotary at racing speeds on a cold day and the engine will not even= warm=20 up. Had to drop back to the one 3/16" bypass hole to get up to 150 deg= rees, with=20 a third of the radiator taped over.=A0=A0
=A0
Lynn E. Hanover
=A0
In a message dated 7/28/2011 11:43:16 P.M. Paraguay Standard Time,=20 keltro@att.net writ= es:
Lynn,
=A0
=A0=A0 What would a=20 Wild Axx Guess be for a restrictor for our 5000 to 7000 rpm range be=20
in your opinion (subject=20 to=A0each individual users=A0testing of course) whether it be in=20 the
form of a smaller diameter=20 return hose or a metal disc ??.................
=A0
Kelly Troyer
<= /blockquote>

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