X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=LuPsNUVc c=1 sm=1 tr=0 a=PfljCweHXHZr3fS9hjJSJw==:117 a=55z/sxGcUIPVrBMYBb4HRw==:17 a=x7bEGLp0ZPQA:10 a=_Z_nqdSeG58A:10 a=sTwFKg_x9MkA:10 a=DAwyPP_o2Byb1YXLmDAA:9 a=Ia-xEzejAAAA:8 a=3oc9M9_CAAAA:8 a=eRLigfuSAAAA:8 a=7g1VtSJxAAAA:8 a=p6hGUVFu6qvSHC_lPbsA:9 a=42yjz9eWMoa_gzHy:21 a=FJNPZdFZnVtWsmtW:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=yMhMjlubAAAA:8 a=SSmOFEACAAAA:8 a=uqOVEnNzjFTebhsg:21 a=H32u-9r9-icwZWbz:21 a=HRtmUIFSuj0cIIDj:21 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=BfhXYjFvZD4iae-mNffo:22 a=grOzbf7U_OpcSX4AJOnl:22 From: " 12348ung@gmail.com" Received: from mail-pf1-f171.google.com ([209.85.210.171] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 246486 for flyrotary@lancaironline.net; Sat, 16 May 2020 19:23:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.210.171; envelope-from=12348ung@gmail.com Received: by mail-pf1-f171.google.com with SMTP id x15so2951039pfa.1 for ; Sat, 16 May 2020 16:23:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :thread-index:content-language; bh=zmuSqRlKNUgPeQjRJWe21ACgLZUZMIFC6vON+mG4Tvw=; b=r/dbrgNih4uFBa6r522iJ1Z2dnxHLKGDEfIv6+2b0wJ2IMgKJb5CsNdSFQMZzisiXq s6mJL+f+Zu08YdpKs3C54ovdfQvJ52AtvIt4F8Ku5bYs+A4r+DYD54T9CN/KgQyQngQY qmy4ZthnGRWoTxNyTDvreyi+7qpatBoE7YM+EwWIc86wiZ3NrqJs9CTRxDiCNXbtd93M ATq55jvuEKPtzxhBF1qG6Cvi4INAhqpXG+ZbZ0wsBZury+HaG8dI7cN67ZcHYMXBOzXR An2Xw9MxKw77owUFMNtOO4pkLdYLoRwRmlPI5NbTirkcQSiRvmNfx4uCAsncHfeyvRoi 2sFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:references:in-reply-to:subject:date :message-id:mime-version:thread-index:content-language; bh=zmuSqRlKNUgPeQjRJWe21ACgLZUZMIFC6vON+mG4Tvw=; b=Lpyo5tLSvwm+dQVY+3MTkM3A+mG029IoTlcstv1Utsn0lYQI9XfqxR0Ep8/AnL5Cy3 qQAdFbWw7tAdmdiy0X5Fw8r4c5xc4g7Tf6hhJMpwwcaE+k7injLwu/CvIZpzKb9Sfycf IEGUlEhW3xM7K5UiwIr1+qMEk3yDD90Tdy5lwUoGpbKaZ64STxq6a50/33oF2PIi+w32 8krZUQoKYbHYobpPizssZ/hODFZPKJhEmcyM3C4hLnoyBd5rSLYZeakuLE240YohoUSi L1Tw0oWkndABROaFOzQbvKBvWdE5CCVnZOX+8yfLqmvyrnouoIu3SsGwFjTa4AMSnCMd fWtA== X-Gm-Message-State: AOAM532UDQyyCH/GJUyn2IPRWmMUi5TSelej/ogMfdDL2mgaZYyzdsIM +MCgq7S9F65EwolNvvnPmQPYkggp/EM= X-Google-Smtp-Source: ABdhPJzhIJf+wqwrRzuCpVHkyA0mI7qXTEDOnx3O4Vlny1Dgx6BUc9gZBCZhwMrreqIhAsnpnUQC5A== X-Received: by 2002:a62:1503:: with SMTP id 3mr10680483pfv.202.1589671365547; Sat, 16 May 2020 16:22:45 -0700 (PDT) Return-Path: <12348ung@gmail.com> Received: from UserPC ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id k3sm4580485pjc.38.2020.05.16.16.22.43 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 May 2020 16:22:44 -0700 (PDT) To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Water Pump Date: Sun, 17 May 2020 09:22:41 +1000 Message-ID: <000001d62bd8$e6f7d420$b4e77c60$@gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01D62C2C.B8A65520" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQDl2cMLGLTXI+7wdeWKVQ40bqcwI6qL/c+w Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_0001_01D62C2C.B8A65520 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Lynn, As usual great advice. I note the advice for = =E2=80=9Ccold=E2=80=9D plugs. Care to recommend which ones?? Thanks = Neil. =20 From: Rotary motors in aircraft =20 Sent: Saturday, May 16, 2020 10:53 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Water Pump =20 The stock impeller is sized to provide enough flow to cool the engine on = a hot day at idle. We used the Racing Beat pulley set. Smaller crank = pulley and a just a bit bigger pump pulley. This is good up to 10,000 = RPM. I doubt that any modifications would be required if you only need 7,500 = RPM. The restricter increases the water pressure in the block and helps = retard nucleate boiling around the spark plugs. When you use ice cold = heat range plugs (and you should) a bit more plug heat goes into the = housing around the plugs. Notice on junk housings that have had very = hard use with street plugs, that there are radial crack running from one = or both plug holes into the chrome. My mixture was distilled water. Ten percent Glycol. one teaspoon full of = Dawn dish washing detergent. Or, RedLine's WaterWetter coolant helper. = Both work. One is cheap. I also used a swirl pot (required by Cosworth for all of their installations.) The rotary loves to hide air in the = engine. Then when the RPMs come up the air wanders about looking for the = worst possible spot to stop and insulate some critical location from the = coolant. =20 Air comes to the swirl pot and pops to the top where it is fed to the = bottom of a make up bottle. So, as the temperature changes and the = volume decreases, only raw coolant is pulled back into the system. Even = with a swirl pot it takes two 20 minute sessions to get all of the air = out of the system. The make up bottle was the stock piece from any 70s = RX-2,RX-3 or RX-7. It was not my idea but it works great. The thermostat = is on top of the make up bottle. Use the highest pressure (Stant Lever = cap) you can fit to the bottle). The higher the pressure the hotter the = engine can get without boiling the coolant. Not a big deal until you = need just another 100 yards to make flat ground, or a road, or a runway. =20 Fire pumps on large ships are called main feed pumps. These huge pumps = will not start up unless a specific inlet pressure is reached. In front = of the main feed pump you will find two or four smaller booster pumps. = The booster pumps deliver the high pressure water to the inlet of the = main feed pump. Without the boosters, the main feed would start up and = just boil water at the inlet. Part of the impeller would have 50 pounds = of water and some of the impeller might have none at all. This imbalance = is not felt when a tiny car impeller is used. When the impeller is 4 = feet in diameter everyone on the ship knows there is a major problem. =20 Gained at great expense from 35 years of racing. =20 Lynn E. Hanover =20 =20 In a message dated 5/15/2020 8:09:19 PM Eastern Standard Time, = flyrotary@lancaironline.net = writes:=20 =20 Thanks Lynn.=20 So cavitation is not simply solved by impeller design but system wide = considerations of pressure. Cheers I=E2=80=99m trying to eek out any small % increases in cooling = efficiency for our hotter summer months and wondered=20 if the Re-medy pump would provide any benefit at our take off and climb = at 7250 rpm. =20 Steve Izett =20 =20 > On 16 May 2020, at 7:48 am, lehanover lehanover@aol.com = > wrote: >=20 > I raced Mazdas for 25 years. Used the stock 12-A water pump with a = 5/8" restricter in the outlet. Never a problem. Notice that the return = hose from the radiator on most cars is bigger and has a spring inside to = prevent hose collapse. The hose collapse comes about when the water = pressure inside the hose is lower than local air pressure. When you = increase flow rate and do not change the restrictions in the loop = (radiator, hoses, bends, or filter) coolant on the suction side of the = pump will boil. The pumps suction side will see very low coolant = pressures and cavitate. In aircraft, where nearly every radiator is = close to being too small this problem probably comes up more often. My = cooling system worked perfectly because I used a huge coolant radiator > ( very low restriction) and three oil radiators and a restricter on = the pump outlet. At first I used part of a thermostat for restriction. = Then a custom aluminum washer. If the washer was left out the temps went = up. So I welded the washer into the outlet neck. We had two engines and = the same two water pumps lasted all of that time. Shifting at 9,600 RPM. > Lynn E. Hanover >=20 > In a message dated 5/15/2020 7:15:13 PM Eastern Standard Time, = flyrotary@lancaironline.net = writes: >=20 > Thanks Guys for the feedback re pumps. > Andrew, what information did you get that caused you to change to the = Re-medy pump? > Was it from a reputable source, like racers? I=E2=80=99ve put it in = the diary to call GoGear when I=E2=80=99m back in Perth early next week. > I have little trust in advertising these days and if I=E2=80=99m going = to go to the trouble and expense I=E2=80=99d like some science behind = it. >=20 > Cheers >=20 > Steve >=20 >=20 > > On 15 May 2020, at 11:17 pm, Andrew Martin andrew@martinag.com.au = > wrote: > > > > I=E2=80=99ve had Mazmart Re-medy pump in since start. Seems thats = been one component I=E2=80=99ve not had to worry about. > > Andrew > > > > -- > > Regards Andrew Martin Martin Ag >=20 >=20 > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html =20 =20 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0001_01D62C2C.B8A65520 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Lynn,

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 As usual great advice.=C2=A0 I note the advice for = =E2=80=9Ccold=E2=80=9D plugs.=C2=A0 Care to recommend which = ones??=C2=A0=C2=A0=C2=A0=C2=A0 Thanks Neil.

 

From: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Sent: Saturday, May 16, = 2020 10:53 PM
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: = Water Pump

 

The= stock impeller is sized to provide enough flow to cool the engine on a = hot day at idle. We used the Racing Beat pulley set. Smaller crank = pulley and a just a bit bigger pump pulley. This is good up to 10,000 = RPM.

I = doubt that any modifications would be required if you only need 7,500 = RPM. The restricter increases the water pressure in the block and helps = retard nucleate boiling around the spark plugs. When you use ice cold = heat range plugs (and you should) a bit more plug heat goes into the = housing around the plugs. Notice on junk housings that have had very = hard use with street plugs, that there are radial crack running from one = or both plug holes into the chrome.

My = mixture was distilled water. Ten percent Glycol. one teaspoon full of = Dawn dish washing detergent. Or, RedLine's WaterWetter coolant helper. = Both work. One is cheap. I also used a swirl pot (required by = Cosworth

for= all of their installations.) The rotary loves to hide air in the = engine. Then when the RPMs come up the air wanders about looking for the = worst possible spot to stop and insulate some critical location from the = coolant.

 

Air= comes to the swirl pot and pops to the top where it is fed to the = bottom of a make up bottle. So, as the temperature changes and the = volume decreases, only raw coolant is pulled back into the system. Even = with a swirl pot it takes two 20 minute sessions to get all of the air = out of the system. The make up bottle was the stock piece from any 70s = RX-2,RX-3 or RX-7. It was not my idea but it works great. The thermostat = is on top of the make up bottle. Use the highest pressure (Stant Lever = cap) you can fit to the bottle). The higher the pressure the hotter the = engine can get without boiling the coolant. Not a big deal until you = need just another 100 yards to make flat ground, or a road, or a = runway.

 

Fir= e pumps on large ships are called main feed pumps. These huge pumps will = not start up unless a specific inlet pressure is reached. In front of = the main feed pump you will find two or four smaller booster pumps. The = booster pumps deliver the high pressure water to the inlet of the main = feed pump. Without the boosters, the main feed would start up and just = boil water at the inlet. Part of the impeller would have 50 pounds of = water and some of the impeller might have none at all. This imbalance is = not felt when a tiny car impeller is used. When the impeller is 4 feet = in diameter everyone on the ship knows there is a major = problem.

 

Gai= ned at great expense from 35 years of = racing.

 

Lyn= n E. Hanover

&nb= sp;

 

In a message = dated 5/15/2020 8:09:19 PM Eastern Standard Time, flyrotary@lancaironline.net writes:

 

 

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