X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=G+5i7Os5 c=1 sm=1 tr=0 a=PSwkBrWFKWhhsI96QFcKkw==:117 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=x7bEGLp0ZPQA:10 a=A-0mRrAPPO4A:10 a=J70Eh1EUuV4A:10 a=wzN344fxAAAA:8 a=wrnlkVK_AAAA:8 a=o1OHuDzbAAAA:8 a=Ia-xEzejAAAA:8 a=pjdaNNIBAAAA:8 a=pGLkceISAAAA:8 a=_6GpL_ENAAAA:8 a=7g1VtSJxAAAA:8 a=r8fvD_uG-3AcKbcdk4UA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=-5_-C1rDMr84j7PwWZQA:9 a=v5AoQMp3YNFstbZM:21 a=T4KWcpQiM7l6UuaEBsRd:22 a=ABpvz31vvg_prsUBKvxG:22 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Charlie England ceengland7@gmail.com" Received: from mail-io1-f46.google.com ([209.85.166.46] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 12936173 for flyrotary@lancaironline.net; Sun, 08 Sep 2019 09:42:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.166.46; envelope-from=ceengland7@gmail.com Received: by mail-io1-f46.google.com with SMTP id m11so22916397ioo.0 for ; Sun, 08 Sep 2019 06:42:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=N4Mny+l0Wiw6tCfO6ZVircUbmNNIJmUMWag9Qwf+AdU=; b=LMaSZgq2aITSoPbTYA73lkchcdluJuUxKsEt20peGgtLJciMG8bBuPsKyFOKmCdths fo3M72oBhhSqsMjVQDjAoy9ptIRp69dQkZv0KZvlZwrH8tlHlmQT65i7nqlUuABfayT1 +qddVOtv5RaeYUGEDAhknzdaCwZdGZXUnZ5G3ykhX+n1w4BAcL3VmzSfipkM8yRfqUWs pWQfOCsUM4JxOX3HQyebbjTSphFcy/ZLT6unudXJzKkp0GMVjve7cFmfxguRJAsSTxfJ BQ5Dlo78JK3dYdIgRda3ifqqWEeLlB7IXbgi4PWdor4+O5DXm6DQTvQR9cKShzor8qd4 qFcQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=N4Mny+l0Wiw6tCfO6ZVircUbmNNIJmUMWag9Qwf+AdU=; b=pHX6WLFcBLP76Bk0MNdR52G6qXmWKIB/6vmNLQ0R+ZMFWx5Aqr5LxiSTCBO0dAxoG2 yPXMeb7SSAZ7sMuhQx/CTwe/BEPd2Vd/dXbn1s8HhnAHW5Ig56BpaGZlYn5HjFqTA3lv sTnXKW/AC9QT2Ld30L5LHSKLh6Z0vFRCSegLbjuQCdyGfTYAWKz0b+lrbdW1vWd+cLaH nWflqv5MolSOYB5ZxvLoxgrJRXJXuT3Mc5mV3fzzglOl/G4zkLrpkFhRVT1GBpCpyqy/ G47K4YFm9B9DSDTMQZx/iHn9DalMJm16Gg2XmeCgmdO2igRdieRzjpIPnOrhBo0L9Sm0 qrIg== X-Gm-Message-State: APjAAAXukWoEY0VERbNhOE0imiBnUlbvtqcgifiOWeH4eLDoDp32gcLF hTnMwPq1nd+JSxD/rMrHv7O0u0r977FBfOQme/ZwVQ== X-Google-Smtp-Source: APXvYqyKV4o62LktpHobxtphstBC0Ww1A7lpp1PYrPVxETu+nDwL42mC82nYIRWQvxLfHDe1syrCydxZA5t9dNRbboI= X-Received: by 2002:a5e:930b:: with SMTP id k11mr8914296iom.10.1567950152550; Sun, 08 Sep 2019 06:42:32 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sun, 8 Sep 2019 08:35:10 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Evap cores To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000de4e1805920ad7b6" --000000000000de4e1805920ad7b6 Content-Type: text/plain; charset="UTF-8" 'Scirocco style' refers to it being configured to fit a VW Scirocco car (or used to; see below). They're cross-flow (horizontal flow, as mounted in the car), 2-pass (fluid enters on one end, flows through 1/2 the core volume to the other side, then back through the other half of the core volume and exits on the same end where it entered). Apparently, the term got popular enough that the rad makers started sticking it on every conceivable radiator; ex: https://www.jegs.com/i/AFCO-Cooling/923/80108NR/10002/-1 and https://www.jegs.com/i/Griffin-Radiators/475/2-55185-X/10002/-1 The term used to be useful in a search, because it meant cross flow, 2 pass, with in/out on the same end of the rad. No more, I guess... IIRC, Tracy used the thickest one available for the 20B RV-8, and Dennis used one step thinner for his Renesis powered RV-7. The hose size on my Honda Civic 'racing' rad matches the engine fittings in the car, and I'd bet the Scirocco hose sizes fit the Scirocco car engine. This Griffin is 'reasonably' priced, for a 2 1/2" core: https://www.summitracing.com/parts/gri-2-58185-x/overview/ Don't forget that if you use something with this much face area, and try to use a 'streamline' diffuser, it's likely to be difficult to make the diffuser work properly without it being quite long (think belly mount). It'll almost certainly need a relatively large inlet, and probably will need turning vanes, as well. Both Tracy and Dennis used wedge style diffusers. Something to consider: NASCAR rads are roughly 3.5-4" thick, as are traditional aircraft oil coolers. Both typically get more or less 'straight shot' cooling air, and operate in the same 80-200 mph air that an RV will operate in. Charlie On Sun, Sep 8, 2019 at 12:18 AM Finn Lassen finn.lassen@verizon.net < flyrotary@lancaironline.net> wrote: > I think the "Scirocco" style refers to no filler cap. > > There are a lot of "Scirocco" rads at fairly low prices, but they appear > to be thin; nowhere near the 500 cu inch we're looking for. Also, most > of the racing radiators have 1.25 to 1.75" inlets/outlets. I wonder how > you found yours with 1.1" inlets/outlets. ( > > https://www.ebay.com/itm/290600743649?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 > ) > > But would like to know what Dennis uses. > > Finn > > On 9/6/2019 10:30 PM, Charlie England ceengland7@gmail.com wrote: > > On 9/6/2019 8:16 PM, Finn Lassen finn.lassen@verizon.net wrote: > >> Not sure why I was so stuck on only putting evap cores in the cowl > >> cheeks. > >> > >> Evap cores are cheaply available. > >> > >> I'm thinking they could easily be stacked under the engine as well. > >> (Not making then 8" thick, but flat end to flat end, or tank-to-tank). > >> > >> One way would be to join them flat end to flat end with an o-ring. > >> That would put them in series. 13" wide and 18" long. > >> > >> The other way would be tank against tank, which would enable parallel > >> (but more hoses). 9" wide and 26" long. > >> > >> I don't remember earlier postings on this, but would 3/4" ID hoses be > >> enough for a series configuration? (200 max HP Renesis, more likely > >> 180 HP) > >> > >> Finn > > Tank to tank makes an efficient diffuser difficult. > > > > There are cheaper versions of the Scirocco rad with 2" thick cores, if > > you think that would be enough core volume. Dennis H. is using a > > Scirocco for his Renesis; perhaps he'll see this thread & tell you his > > core thickness. > > > > Charlie > > > > Charlie > > > > --- > > This email has been checked for viruses by Avast antivirus software. > > https://www.avast.com/antivirus > > > > > > -- > > Homepage:?? http://www.flyrotary.com/ > > Archive and UnSub: > > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > --000000000000de4e1805920ad7b6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
= 9;Scirocco style' refers to it being configured to fit a VW Scirocco ca= r (or used to; see below). They're cross-flow (horizontal flow, as moun= ted in the car), 2-pass (fluid enters on one end, flows through 1/2 the cor= e volume to the other side, then back through the other half of the core vo= lume and exits on the same end where it entered). Apparently, the term got = popular enough that the rad makers started sticking it on every conceivable= radiator; ex:=C2=A0
= https://www.jegs.com/i/AFCO-Cooling/923/80108NR/10002/-1
and
https://www.jegs.com/i/Griffin-Radi= ators/475/2-55185-X/10002/-1
The term used to be useful in a search, because it me= ant cross flow, 2 pass, with in/out on the same end of the rad. No more, I = guess...

IIRC, Tracy used= the thickest one available for the 20B RV-8, and Dennis used one step thin= ner for his Renesis powered RV-7.

The hose size on my Honda Civic 'racing' rad matches the= engine fittings in the car, and I'd bet the Scirocco hose sizes fit th= e Scirocco car engine.

Th= is Griffin is 'reasonably' priced, for a 2 1/2" core:
https://www.summitracing.co= m/parts/gri-2-58185-x/overview/

Don't forget that if you use something with this much fa= ce area, and try to use a 'streamline' diffuser, it's likely to= be difficult to make the diffuser work properly without it being quite lon= g (think belly mount). It'll almost certainly need a relatively large i= nlet, and probably will need turning vanes, as well. Both Tracy and Dennis = used wedge style diffusers. Something to consider: NASCAR rads are roughly = 3.5-4" thick, as are traditional aircraft oil coolers. Both typically = get more or less 'straight shot' cooling air, and operate in the sa= me 80-200 mph air that an RV will operate in.=C2=A0

Charlie

On Sun, Sep 8, 2019 at 12:18 AM Fin= n Lassen finn.lassen@verizon.net= <flyrotary@lancairon= line.net> wrote:
I think the "Scirocco" style refers to no filler cap.

There are a lot of "Scirocco" rads at fairly low prices, but they= appear
to be thin; nowhere near the 500 cu inch we're looking for. Also, most =
of the racing radiators have 1.25 to 1.75" inlets/outlets. I wonder ho= w
you found yours with 1.1" inlets/outlets. (
http= s://www.ebay.com/itm/290600743649?ssPageName=3DSTRK:MEWAX:IT&_trksid=3D= p3984.m1423.l2649
)

But would like to know what Dennis uses.

Finn

On 9/6/2019 10:30 PM, Charlie England ceengland7@gmail.com wrote:
> On 9/6/2019 8:16 PM, Finn Lassen finn.lassen@verizon.net wrote:
>> Not sure why I was so stuck on only putting evap cores in the cowl=
>> cheeks.
>>
>> Evap cores are cheaply available.
>>
>> I'm thinking they could easily be stacked under the engine as = well.
>> (Not making then 8" thick, but flat end to flat end, or tank-= to-tank).
>>
>> One way would be to join them flat end to flat end with an o-ring.=
>> That would put them in series. 13" wide and 18" long. >>
>> The other way would be tank against tank, which would enable paral= lel
>> (but more hoses). 9" wide and 26" long.
>>
>> I don't remember earlier postings on this, but would 3/4"= ID hoses be
>> enough for a series configuration? (200 max HP Renesis, more likel= y
>> 180 HP)
>>
>> Finn
> Tank to tank makes an efficient diffuser difficult.
>
> There are cheaper versions of the Scirocco rad with 2" thick core= s, if
> you think that would be enough core volume. Dennis H. is using a
> Scirocco for his Renesis; perhaps he'll see this thread & tell= you his
> core thickness.
>
> Charlie
>
> Charlie
>
> ---
> This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus
>
>
> --
> Homepage:?? http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/list= s/flyrotary/List.html
>


--
Homepage:=C2=A0 http://www.flyrotary.com/
Archive and UnSub:=C2=A0 =C2=A0http://mail= .lancaironline.net:81/lists/flyrotary/List.html
--000000000000de4e1805920ad7b6--