X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from nm28-vm0.bullet.mail.sp2.yahoo.com ([98.139.91.234] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with SMTP id 4592677 for flyrotary@lancaironline.net; Fri, 26 Nov 2010 04:34:40 -0500 Received-SPF: none receiver=logan.com; client-ip=98.139.91.234; envelope-from=keltro@att.net Received: from [98.139.91.70] by nm28.bullet.mail.sp2.yahoo.com with NNFMP; 26 Nov 2010 09:34:03 -0000 Received: from [98.139.91.32] by tm10.bullet.mail.sp2.yahoo.com with NNFMP; 26 Nov 2010 09:34:03 -0000 Received: from [127.0.0.1] by omp1032.mail.sp2.yahoo.com with NNFMP; 26 Nov 2010 09:34:03 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 517377.26239.bm@omp1032.mail.sp2.yahoo.com Received: (qmail 97207 invoked by uid 60001); 26 Nov 2010 09:34:03 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1290764043; bh=T/k1u+ZipS1AmZe1Q2o4HHHBYOrjcqFD67bBJOPiSJ8=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=0pMFB6htOd/FMEdvi7+M1EUuAFsdyB8H7L+pkbbuA3tAT/r0p8224NUlF8RDnV8LupmvkniC2qoWDea2wbELr6zBNApTDRsVdKEin4E2V/XTXFoykoLcwJY6yP702/BqU7p5BcxTFXJkWYZcT4xcwEqSumTY7QrEDL6mKTUKPnI= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=T1+J9CK+54BUuTvOSL2j7tL7tApbqgMEOGApOzxqHbPIMbID6sn8KYMU4b3LXwJlFf8dT/ASmOLabK0L5GthqJPceUqC7Gp2wfnC+zhRjPv+YVnHs3KSYtEB8D9r6UPqDnQ40fhFW7AOv7wDicLVOFgte+9QnesXFh8820AyiLI=; Message-ID: <276968.96324.qm@web83907.mail.sp1.yahoo.com> X-YMail-OSG: ifJE708VM1kcaGTdfmkx4ApZqTuDPUz156qMuMjXBdEmM2w qela601X34bDQ32wrmbxfJPwcBc6CYt7b9tUHeDXpPhsjVY2B_FTM_paLx6b 08ZGIXDoKRYJezMRSU2ipu3MfFkCehemKK9cf8EBbPIInmSuKfYIiSg.pxC2 uFHoFLi.I84u4WlN3jP9Cq.1JDo1Rwyze0Umj04irvBw9n4eIT72CCKbLMTm PFerTvR337NgHXAKlOb5dt87GOOCBB_efGMS9HVHw8Y.V_pRe1nqO_ELUU8Y d9LSPALtrY1Q- Received: from [208.114.47.135] by web83907.mail.sp1.yahoo.com via HTTP; Fri, 26 Nov 2010 01:34:03 PST X-Mailer: YahooMailRC/553 YahooMailWebService/0.8.107.285259 Date: Fri, 26 Nov 2010 01:34:03 -0800 (PST) From: Kelly Troyer Subject: Re: Renesis Improved Waterpump To: Rotary motors in aircraft , CozyGirrrl@aol.com MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1716485846-1290764043=:96324" --0-1716485846-1290764043=:96324 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Group,=0A=A0=A0 Here is a much better definition of "Cavitation" than mine = as it applies to =0Apumps=A0as in our case..........=0A=0APumps and propell= ers=0AMajor places where cavitation occurs are in pumps, on propellers, or = at =0Arestrictions in a flowing liquid.=0A=0AAs an impeller's (in a pump) o= r propeller's (as in the case of a ship or =0Asubmarine) blades move throug= h a fluid, low-pressure areas are formed as the =0Afluid accelerates around= and moves past the blades. The faster the blades move, =0Athe lower the pr= essure around it can become. As it reaches vapor pressureVapor =0Apressure= =0AVapor pressure or equilibrium vapor pressure are the pressure of a vapor= in =0Athermodynamic equilibrium with its condensed phases in a closed bott= le. All =0Aliquids and solids have a tendency to evaporate into a gaseous f= orm, and all =0Agases have a tendency to condense back to their liquid or s= olid...=0A, the fluid vaporizesVaporization=0AVaporization of an element or= compound is a phase transition from the liquid or =0Asolid phase to gas ph= ase. There are three types of vaporization: evaporation, =0Aboiling and sub= limation....=0A=A0and forms small bubbleLiquid bubble=0AA bubble is a globu= le of one substance in another, usually gas in a liquid.Due =0Ato the Maran= goni effect, bubbles may remain intact when they reach the surface =0Aof th= e immersive substance.-Common examples:...=0As of gas. This is cavitation. = When the bubbles collapse later, they typically =0Acause very strong local = shock waves in the fluid, which may be audible and may =0Aeven damage the b= lades.=0A=0ACavitation in pumps may occur in two different forms:=0A=0ASuct= ion cavitation=0ASuctionSuction=0ASuction is the flow of a fluid into a par= tial vacuum, or region of low pressure. =0AThe pressure gradient between th= is region and the ambient pressure will propel =0Amatter toward the low pre= ssure area. Suction is popularly thought of as an =0Aattractive effect, whi= ch is incorrect since vacuums do not...=0A=A0cavitation occurs when the pum= p suction is under a low-pressure/high-vacuum =0Acondition where the liquid= turns into a vapor at the eye of the pump impeller. =0AThis vapor is carri= ed over to the discharge side of the pump, where it no longer =0Asees vacuu= m and is compressed back into a liquid by the discharge pressure. This =0Ai= mploding action occurs violently and attacks the face of the impeller. An = =0Aimpeller that has been operating under a suction cavitation condition ca= n have =0Alarge chunks of material removed from its face or very small bits= of material =0Aremoved, causing the impeller to look spongelike. Both case= s will cause =0Apremature failure of the pump, often due to bearing failure= . Suction cavitation =0Ais often identified by a sound like gravel or marbl= es in the pump casing.=0A=0AIn automotive applications, a clogged filter in= a hydraulic system (power =0Asteering, power brakes) can cause suction cav= itation making a noise that rises =0Aand falls in synch with engine RPM. It= is fairly often a high pitched whine, =0Alike set of nylon gears not quite= meshing correctly.=0A=0ADischarge cavitation=0ADischarge cavitation occurs= when the pump discharge pressure is extremely high, =0Anormally occurring = in a pump that is running at less than 10% of its best =0Aefficiency point.= The high discharge pressure causes the majority of the fluid =0Ato circula= te inside the pump instead of being allowed to flow out the discharge. =0AA= s the liquid flows around the impeller, it must pass through the small =0Ac= learance between the impeller and the pump housing at extremely high =0Avel= ocityVelocity=0AIn physics, velocity is the rate of change of position. It = is a vector physical =0Aquantity; both magnitude and direction are required= to define it...=0A. This velocity causes a vacuum to develop at the housin= g wall (similar to what =0Aoccurs in a venturiVenturi effect=0AThe Venturi = effect is the reduction in fluid pressure that results when a fluid =0Aflow= s through a constricted section of pipe. The Venturi effect is named after = =0AGiovanni Battista Venturi , an Italian physicist.-Background:...=0A), wh= ich turns the liquid into a vapor. A pump that has been operating under =0A= these conditions shows premature wear of the impeller vane tips and the pum= p =0Ahousing. In addition, due to the high pressure conditions, premature f= ailure of =0Athe pump's mechanical seal and bearings can be expected. Under= extreme =0Aconditions, this can break the impeller shaft.=0A=0ADischarge c= avitation in joint fluid is thought to cause the popping sound =0Aproduced = by bone joint crackingCracking joints=0ACracking joints is the action of mo= ving joints to produce a sharp cracking or =0Apopping sound. The most commo= n form of this occurs during deliberate =0Aknuckle-cracking...=0A, for exam= ple by deliberately cracking one's knuckles.=0A=0A=A0 Kelly Troyer=0A"DYKE = DELTA JD2" (Eventually)=0A"13B ROTARY"_ Engine=0A"RWS"_RD1C/EC2/EM2=0A"MIST= RAL"_Backplate/Oil Manifold=0A"TURBONETICS"_TO4E50 Turbo=0A=0A=0A=0A----- F= orwarded Message ----=0AFrom: Kelly Troyer =0ATo: Rotary mo= tors in aircraft =0ASent: Fri, November 26, 20= 10 2:53:04 AM=0ASubject: [FlyRotary] Re: Renesis Improved Waterpump=0A=0A= =0AAndrew,=0A=A0=A0 Someone on the list will correct me if I am wrong but t= he way I understand =0Acavitation is=A0that=0Athe impeller is turning so fa= st that a slight vacuum is formed at the=A0blade tips =0Aand they=A0no long= er =0A=0Aare picking up water (or as much water) and pressure and flow is r= educed much =0Alike when=A0the=0Atips of a propeller begin going sonic in a= ir=A0and it loses thrust..........=A0=0A=A0=0AKelly Troyer=0A"DYKE DELTA JD= 2" (Eventually)=0A"13B ROTARY"_ Engine=0A"RWS"_RD1C/EC2/EM2=0A"MISTRAL"_Bac= kplate/Oil Manifold=0A"TURBONETICS"_TO4E50 Turbo=0A=0A=0A=0A=0A____________= ____________________=0AFrom: Andrew Martin =0ATo: R= otary motors in aircraft =0ASent: Fri, Novembe= r 26, 2010 2:28:52 AM=0ASubject: [FlyRotary] Re: Renesis Improved Waterpump= =0A=0AKelly =0A=0AI imported one of those pumps for my Renesis a couple of = years ago as my engine =0Aarrived without an OEM pump, and it just looked s= o much more like a pump should, =0Amaybe in a few months I may start the en= gine and be able to report its =0Aeffectiveness.=0AAm I right in assuming t= he only problem with pumping coolant fast is in the HP =0Aconsumed? and cav= itation is more a result of the heat exchanger being unable to =0Aflow as f= ast as the pump?=0A=0AAndrew=0AWestern Australia=0A=0A=0A=0AOn Fri, Nov 26,= 2010 at 12:16 PM, Kelly Troyer wrote:=0A=0AGroup,=0A>=0A>= =A0=A0=A0 Renesis waterpump with improved impeller for more efficent flow a= nd =0A>cavitation resistant at=A0high rpm...........A little=0A>pricey but = Christmas is coming !!.......................<:)=0A>=0A>The purpose of the = pump is to improve on Mazda's design since we are able to =0A>precision han= d build each unit and have vast experience with rotary engines =0A>being ra= ced amid torturous conditions (Having raced and won at 12 hours of =0A>Sebr= ing, Daytona 24 hour, 24 Heurs du Mans and won multipe championships). What= =0A>our pump does is move a greater quantity of water out of the block qui= cker (As =0A>allowed by the thermostat) to be exposed to the cooling elemen= ts. This is =0A>accomplished by superior design. We start with brand new wa= ter pumps from Mazda =0A>and install our impeller that we've designed. Our = impeller moves more water and =0A>prevents cavitation by having much tigher= clearances (To every surface), helical =0A>shape, closed back and conical = introduction. Our design is reminiscent of that =0A>used on the R26B 4 roto= r engine and does not require any under drive pulley to =0A>slow it down.= =0A>=0A>=0A>http://www.mazmart.com/remedy.html=0A>=A0=A0=0A>Kelly Troyer=0A= >"DYKE DELTA JD2" (Eventually)=0A>"13B ROTARY"_ Engine=0A>"RWS"_RD1C/EC2/EM= 2=0A>"MISTRAL"_Backplate/Oil Manifold=0A>"TURBONETICS"_TO4E50 Turbo=0A>--= =0A>Homepage: =A0http://www.flyrotary.com/=0A>Archive and UnSub: =A0 http:/= /mail.lancaironline.net:81/lists/flyrotary/List.html=0A>=0A> --0-1716485846-1290764043=:96324 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
=0A
=0A
Group,
=0A
   Here is a much b= etter definition of "Cavitation" than mine as it applies to pumps as i= n our case..........
=0A
 
=0A
=0A

Pumps and prop= ellers


Major places where cavitation occurs are in pumps, on propel= lers, or at restrictions in a flowing liquid.

As an impeller's (in a= pump) or propeller's (as in the case of a ship or submarine) blades move t= hrough a fluid, low-pressure areas are formed as the fluid accelerates arou= nd and moves past the blades. The faster the blades move, the lower the pre= ssure around it can become. As it reaches vapor pressure =0A
Vapor pressure
=0A
= =0A
Vapor pressure or equilibrium vap= or pressure are the pressure of a vapor in thermodynamic equilibrium with i= ts condensed phases in a closed bottle. All liquids and solids have a tende= ncy to evaporate into a gaseous form, and all gases have a tendency to cond= ense back to their liquid or solid...

, the fluid vaporizes =0A
Vaporization
=0A
=0A
Vaporization of an e= lement or compound is a phase transition from the liquid or solid phase to = gas phase. There are three types of vaporization: evaporation, boiling and = sublimation....

 and forms small bubble =0A
Liquid bubble
=0A
= =0A
A bubble is a globule of one subs= tance in another, usually gas in a liquid.Due to the Marangoni effect, bubb= les may remain intact when they reach the surface of the immersive substanc= e.-Common examples:...

s of gas. This is cavitation. When t= he bubbles collapse later, they typically cause very strong local shock wav= es in the fluid, which may be audible and may even damage the blades.
Cavitation in pumps may occur in two different forms:
=0A

Suction c= avitation


Suction =0ASuction
=0A
=0A
Suction is the flow of a fluid into a par= tial vacuum, or region of low pressure. The pressure gradient between this = region and the ambient pressure will propel matter toward the low pressure = area. Suction is popularly thought of as an attractive effect, which is inc= orrect since vacuums do not...

 cavitation occurs when= the pump suction is under a low-pressure/high-vacuum condition where the l= iquid turns into a vapor at the eye of the pump impeller. This vapor is car= ried over to the discharge side of the pump, where it no longer sees vacuum= and is compressed back into a liquid by the discharge pressure. This implo= ding action occurs violently and attacks the face of the impeller. An impel= ler that has been operating under a suction cavitation condition can have l= arge chunks of material removed from its face or very small bits of material removed, causing the impeller to look spongelike. Both ca= ses will cause premature failure of the pump, often due to bearing failure.= Suction cavitation is often identified by a sound like gravel or marbles i= n the pump casing.

In automotive applications, a clogged filter in a= hydraulic system (power steering, power brakes) can cause suction cavitati= on making a noise that rises and falls in synch with engine RPM. It is fair= ly often a high pitched whine, like set of nylon gears not quite meshing co= rrectly.
=0A

Discharge cavitation


Discharge cavitation occurs= when the pump discharge pressure is extremely high, normally occurring in = a pump that is running at less than 10% of its best efficiency point. The h= igh discharge pressure causes the majority of the fluid to circulate inside= the pump instead of being allowed to flow out the discharge. As the liquid= flows around the impeller, it must pass through the small clearance betwee= n the impeller and the pump housing at extremely high <= FONT color=3D#605e53>velocity =0AVelocity
=0A
In physics, vel= ocity is the rate of change of position. It is a vector physical quantity; = both magnitude and direction are required to define it...

.= This velocity causes a vacuum to develop at the housing wall (similar to w= hat occurs in a venturi =0A
Venturi effec= t
=0A
The Venturi effect is the reduction in flu= id pressure that results when a fluid flows through a constricted section o= f pipe. The Venturi effect is named after Giovanni Battista Venturi , an It= alian physicist.-Background:...

), which turns the liquid i= nto a vapor. A pump that has been operating under these conditions shows pr= emature wear of the impeller vane tips and the pump housing. In addition, d= ue to the high pressure conditions, premature failure of the pump's mechani= cal seal and bearings can be expected. Under extreme conditions, this can b= reak the impeller shaft.

Discharge cavitation in joint fluid is thou= ght to cause the popping sound produced by bone = joint cracking =0A
Cracking joints
=0A
C= racking joints is the action of moving joints to produce a sharp cracking o= r popping sound. The most common form of this occurs during deliberate knuc= kle-cracking...

, for example by deliberately cracking one'= s knuckles.
=0A
 
=0A
=0A
  Kelly Troyer
"DYKE DELTA JD2" (Eventually)
=0A

"13B ROTARY"_ Eng= ine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

=0A

"TUR= BONETICS"_TO4E50 Turbo

=0A

=0A

=0A
----- Forwarded Message ----
From: Kelly Troyer <keltro@att.net>
To: Rotary motors in aircraft <= ;flyrotary@lancaironline.net>
Se= nt: Fri, November 26, 2010 2:53:04 AM
Subject: [FlyRotary] Re: Renesis Improved Waterpum= p

=0A
=0A
=0A
Andrew,
=0A
   S= omeone on the list will correct me if I am wrong but the way I understand c= avitation is that
=0A
the impeller is turning so fast that a = slight vacuum is formed at the blade tips and they no longer =0A
are picking up water (or as much water) and pressure and flow is = reduced much like when the
=0A
tips of a propeller begin goin= g sonic in air and it loses thrust.......... 
 
=0A<= P>Kelly Troyer
"DYKE DELTA JD2" (Eventually)

=0A

"13B ROTARY"_ Engine
"RWS"_RD= 1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

=0A

"TURBONETICS"_TO4E5= 0 Turbo

=0A

=0A

=0A
=0A
=0AFrom: = Andrew Martin <andrew@martinag.com.au>
To: Rotary motors in aircraft <flyrotary@lancaironl= ine.net>
Sent: Fri, N= ovember 26, 2010 2:28:52 AM
Subject= : [FlyRotary] Re: Renesis Improved Waterpump

Kelly= =0A

=0A
I imported one of those pumps for my Renesis a c= ouple of years ago as my engine arrived without an OEM pump, and it just lo= oked so much more like a pump should, maybe in a few months I may start the= engine and be able to report its effectiveness.
=0A
Am I right in= assuming the only problem with pumping coolant fast is in the HP consumed?= and cavitation is more a result of the heat exchanger being unable to flow= as fast as the pump?
=0A

=0A
Andrew
=0A
We= stern Australia
=0A


=0A
On Fri, No= v 26, 2010 at 12:16 PM, Kelly Troyer <keltro@att.net> wrote:
=0A
=0A
=0A
=0A
=0A
=0A
Group,=0A
 
=0A
    Renesis waterpump with imp= roved impeller for more efficent flow and cavitation resistant at high= rpm...........A little
=0A
pricey but Christmas is coming !!.....= ..................<:)
=0A
 
=0A
The purpose of th= e pump is to improve on Mazda's design since we are able to precision hand = build each unit and have vast experience with rotary engines being raced am= id torturous conditions (Having raced and won at 12 hours of Sebring, Dayto= na 24 hour, 24 Heurs du Mans and won multipe championships). What our pump = does is move a greater quantity of water out of the block quicker (As allow= ed by the thermostat) to be exposed to the cooling elements. This is accomp= lished by superior design. We start with brand new water pumps from Mazda a= nd install our impeller that we've designed. Our impeller moves more water = and prevents cavitation by having much tigher clearances (To every surface)= , helical shape, closed back and conical introduction. Our design is remini= scent of that used on the R26B 4 rotor engine and does not require any unde= r drive pulley to slow it down.
=0A
 
=0A
http:/= /www.mazmart.com/remedy.html
=0A
  
=0A

Kelly Tro= yer
"DYKE DELTA JD2" (Event= ually)

=0A

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2<= BR>"MISTRAL"_Backplate/Oil Manifold

=0A

"TURBONETICS"_TO4E50 Turbo

= =0A

--
Homepage:  http://www.flyrot= ary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/list= s/flyrotary/List.html



<= /DIV>
--0-1716485846-1290764043=:96324--