X-Virus-Scanned: clean according to Sophos on Logan.com From: "alex" Received: from mail-ua0-f169.google.com ([209.85.217.169] verified) by logan.com (CommuniGate Pro SMTP 6.1.12) with ESMTPS id 9148594 for flyrotary@lancaironline.net; Wed, 16 Nov 2016 23:27:25 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.217.169; envelope-from=alex.molteno@gmail.com Received: by mail-ua0-f169.google.com with SMTP id b35so132648257uaa.3 for ; Wed, 16 Nov 2016 20:27:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=Ku4yEdnRqVH2gv8P0BX+0NCTXqgqTYkzScugFiVMUgA=; b=NljlFtKwLAIzqzkJd6GUjkK3b0X04mg3/zMt3Bh5J+nlzqJcwZqXf4vxU+AYsKA3wT 0tHnNfvqzt7Q2wUPlzXFycm//+P483oeyD2hoqReJ09RRg1g9Bz5Op2ayPIUUfhVL9ag OCrM9VO4PswdXmbQMuigFo2w+VFyZc/B+m9x6rRRXPBjjoEgeOnvxD2MUr4lkoaWyXja ua3NZN/8qmKPoEzSzpBcQqxmSmLBnLxJyAF6Wls5qxp9z7HYwhOKIWa65LLpCrBC6CcL LO28lKfvoJbRI57/HRx3cpiZt0ot2A7JGXiHpcBD1J8Cm+JJ8lMrFzWAQVy4/r5zVfgI acAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=Ku4yEdnRqVH2gv8P0BX+0NCTXqgqTYkzScugFiVMUgA=; b=C+sNIwM6PJzUFSBQyDbM85CQD3ZFh9SRpFi1HrRUb8Zye/Y2BG8HdIYCIWfGuuJ03u 5RoYJHhm+TeGsZUhXQMQzI5jOIJf/ber1hsxS69KOiSQDs9VcxPZFKuSal4kMOXCPSFD ho41jMTGSleShaQ8iyWCnVJp6IkmTQaSerMP/1ssPY+kfqKkIVFG9IfC8SMMAyJ7IKFZ RATp2fSdDd2TvZ8/KSe9thzMthdtyAei4ybrHaRV9wBhs9GpFZYfUzRfaRiM32GJBHrx SpNqs85mgcutN5OkY3yw7owVxIU+546dvHbLHH27Nd7G6XyWc9pDGN/tGS4DkcBh7YPW I3+A== X-Gm-Message-State: ABUngvfYpTQ7MZoP6hGbEtzkmWjF13OU3QU8xQnxa8/Fj3Xq4n5AFnz4WrdVI/AxI0vd9JWa4KmGa5U9PDSOjw== X-Received: by 10.176.65.33 with SMTP id j30mr583718uad.94.1479356827913; Wed, 16 Nov 2016 20:27:07 -0800 (PST) MIME-Version: 1.0 Received: by 10.159.49.91 with HTTP; Wed, 16 Nov 2016 20:27:06 -0800 (PST) Received: by 10.159.49.91 with HTTP; Wed, 16 Nov 2016 20:27:06 -0800 (PST) In-Reply-To: References: Date: Wed, 16 Nov 2016 22:27:06 -0600 Message-ID: Subject: Re: [FlyRotary] Re: Cooling To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=94eb2c1246443951190541779a58 --94eb2c1246443951190541779a58 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Steve, maybe also worth a look for a few ideas is Vettermans exhaust website on cooling air exit shapes vs performance he obtained, might confirm the direction in which you are leaning on the louvres. (Scroll to the bottom of the webpage to find it). The RV crowd at Vans Air Force have some great threads on cooling and theory on proper radiusing of the inlets to slow incoming air, as was mentioned in an earlier reply, good luck with it, Alex Molteno On Nov 16, 2016 8:58 PM, "hoursaway1" wrote: > ebay boating parts & access. David > > > ------------------------------ > *From: *"steve Izett" > *To: *"Rotary motors in aircraft" > *Sent: *Wednesday, November 16, 2016 3:30:41 AM > *Subject: *[FlyRotary] Re: Cooling > > Hi David > That may well be what will be needed in flight. At present we have the > gear door open on the ground so plenty of exit. > I=E2=80=99ll do a search for SS louvers in prep. > > Thanks. > Steve > > On 16 Nov. 2016, at 4:16 pm, hoursaway1 > wrote: > > increase outlet size, we had some minor cooling problems our fix was > adding 2, 6" X 6" SS loovers into lower cowl rear area. David Cook RV6A > Rotary > > ------------------------------ > *From: *"steve Izett" > *To: *"Rotary motors in aircraft" > *Sent: *Monday, November 14, 2016 5:21:04 PM > *Subject: *[FlyRotary] Cooling > > Hi guys. > The Glasair SIIRG is near completion and we are taxi testing. > The OAT is rising as we enter summer. Yesterday was 37C ~ 100F. > She can idle forever with water stabilising below 220F and oil below 180F > if the OAT is below 70F but not sure yet about the warmer days. > I=E2=80=99m wondering about 3 options and would value your experience and= thoughts: > 1. Route some more air from the left cheek into the water heat exchange > diffuser currently fed by the right cheek. I am currently only using 50% = of > the left cheek (Blanked off). The other 50% of the left cheek feeds air t= o > the engine. The air is likely not to want to do the gymnastics required t= o > travel the path available. > 2. Install another small core fed by the available left cheek air with > water from the heater outlet. This would make for easy plumping as far as > the water system. I=E2=80=99m not sure how much heat we could reject from= that > small diameter heater outlet? > 3. Install an electric fan on the main exchanger for extended on the > ground running. Main concern with fan is, what happens when cruising at u= p > to 200Knots? > > Appreciate you feedback > > Steve Izett > Glasair SIIRG Genesis 4 port RD1C EC2 > Perth Western Australia > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net: > 81/lists/flyrotary/List.html > > > > --94eb2c1246443951190541779a58 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Steve, maybe also worth a look for a few ideas is Vetterm= ans exhaust website on cooling air exit shapes vs performance he obtained, = might confirm the direction in which you are leaning on the louvres. (Scrol= l to the bottom of the webpage to find it).

The RV crowd at Vans Air Force have some great threads on co= oling and theory on proper radiusing of the inlets to slow incoming air, as= was mentioned in an earlier reply, good luck with it,

Alex Molteno


On Nov 16, 2016 8= :58 PM, "hoursaway1" <flyrotary@lancaironline.net> wrote:
<= blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px= #ccc solid;padding-left:1ex">
ebay boating parts & access.=C2=A0 David


From: &quo= t;steve Izett" <flyrotary@lancaironline.net>
To: "Rotar= y motors in aircraft" <flyrotary@lancaironline.net>
Sent: We= dnesday, November 16, 2016 3:30:41 AM
Subject: [FlyRotary] Re: Co= oling

Hi David
That may well be what will be needed i= n flight. At present we have the gear door open on the ground so plenty of = exit.
I=E2=80=99ll do a search for SS louvers in prep.
=
Thanks.
Steve
On 16 Nov. = 2016, at 4:16 pm, hoursaway1 <flyrotary@lancaironline.net> wrote:

increase outlet size, we had s= ome minor cooling problems our fix was adding 2,=C2=A06" X 6" SS= =C2=A0loovers=C2=A0into lower cowl rear area.=C2=A0 David Cook RV6A Rotary= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0

From: "steve Izett" <flyrotary@lancaironline.net>=
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net<= /a>>
Sent: Monday, November 14, 2016 5:21:04 PM
Subject:= [FlyRotary] Cooling

Hi guys.
The Glasair SIIRG is= near completion and we are taxi testing.
The OAT is rising as we enter = summer. Yesterday was 37C ~ 100F.
She can idle forever with water stabil= ising below 220F and oil below 180F if the OAT is below 70F but not sure ye= t about the warmer days.
I=E2=80=99m wondering about 3 options and would= value your experience and thoughts:
1. Route some more air from the lef= t cheek into the water heat exchange diffuser currently fed by the right ch= eek. I am currently only using 50% of the left cheek (Blanked off). The oth= er 50% of the left cheek feeds air to the engine. The air is likely not to = want to do the gymnastics required to travel the path available.
2. Ins= tall another small core fed by the available left cheek air with water from= the heater outlet. This would make for easy plumping as far as the water s= ystem. I=E2=80=99m not sure how much heat we could reject from that small d= iameter heater outlet?
3. Install an electric fan on the main exchanger = for extended on the ground running. Main concern with fan is, what happens = when cruising at up to 200Knots?

Appreciate you feedback=

Steve Izett
Glasair SIIRG Genesis 4 port RD1C EC2
= Perth Western Australia


--
Homepage: =C2=A0http://www.flyrotary.com/<= /a>
Archive and UnSub: =C2=A0 http://mail.lancaironline.ne= t:81/lists/flyrotary/List.html



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