X-Virus-Scanned: clean according to Sophos on Logan.com From: "Tracy" Received: from mail-oi0-f46.google.com ([209.85.218.46] verified) by logan.com (CommuniGate Pro SMTP 6.1c2) with ESMTPS id 7422974 for flyrotary@lancaironline.net; Sun, 18 Jan 2015 08:02:46 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.46; envelope-from=rwstracy@gmail.com Received: by mail-oi0-f46.google.com with SMTP id z81so1905619oif.5 for ; Sun, 18 Jan 2015 05:02:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:references:from:content-type:in-reply-to:message-id:date:to :content-transfer-encoding:mime-version; bh=DkHYy10ALsSaHujS3yHdJ7HMOLTPe/F0k+Y8PsWHQT8=; b=JiGJoVWPaKfLUT2AhBHM3DP/gOBtkBilZOxs/hRw0aIX7m5D+S2GFSc5OQmmAzV5zM nDiU0oXoN0iYUG/jMTfIQABI/DpyUPn3uh5riA8HtykjXw0iwBREt8oOlcgF7oj6wZiS zhTxovC34IQg7l0u+a5bX2k//0lELx0OQtCGjC1QyoVN4zTzvnrUYUXJV7JJ1USW9xT2 Y0rkCV/nVMw7gSQ1b06byxNC+NiqrsloHf/zOY8TNePoGjl0xpIflKESUP25iWi2fB+0 wTD/Zq8muV8EM5+uHb9MHQWz0+c95R9FYWfrcqZ0UtHdUw3HxDfxQb+5icjI9caLCd1P FiSg== X-Received: by 10.60.141.231 with SMTP id rr7mr15256677oeb.19.1421586132114; Sun, 18 Jan 2015 05:02:12 -0800 (PST) Return-Path: Received: from [192.168.1.4] (220.sub-70-209-20.myvzw.com. [70.209.20.220]) by mx.google.com with ESMTPSA id xt6sm4468461obc.7.2015.01.18.05.02.09 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 18 Jan 2015 05:02:10 -0800 (PST) Subject: Re: [FlyRotary] Re: First time run with Prop Load References: Content-Type: multipart/alternative; boundary=Apple-Mail-20EC6FE6-650F-42D4-9510-A5BBDD2C19ED X-Mailer: iPad Mail (12B440) In-Reply-To: Message-Id: Date: Sun, 18 Jan 2015 08:02:06 -0500 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-20EC6FE6-650F-42D4-9510-A5BBDD2C19ED Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Steve, FWIW, I've never checked my temps at idle (1500 is about idle) but I dou= bt those numbers mean much. Even at 5000 they don't mean much if the airpla= ne isn't moving. Back home now so will send that code. Be aware that the EM3 code was writte= n in compiled Basic so you will need the Pic Basic Pro compiler to do anythi= ng with it. Tracy Sent from my iPad > On Jan 16, 2015, at 01:55, Stephen Izett wro= te: >=20 > Hi Tracy >=20 > I rechecked the delta=E2=80=99s again a 1500RPM and Ive got approx, 12F on= the oil and 9F on the water. > Are you home yet to send me that code for the EM3? >=20 > Cheers >=20 > Steve Izett >> On 15 Jan 2015, at 10:17 pm, Tracy wrote: >>=20 >> Yes, flow rates are very different (about 35 - 40 GMP for the water) and= water has a higher specific Heat (ie, calories per gram per deg F delta) th= an oil. So the oil has to have a much higher delta to carry away the same a= mount of heat. The lower flow rate just increases that factor. The oil al= so does much more of the cooling job in a rotary than a piston engine. Abou= t 1/3 of of the cooling is via the oil. =20 >>=20 >> Tracy >> Sent from my iPad >>=20 >>> On Jan 15, 2015, at 05:47, steve Izett wro= te: >>>=20 >>> Hi Tracy >>> Thanks for the data. Any wisdom on why the difference? >>> I thought water would transfer heat faster than oil! Are the flow rates v= astly different? >>> Thanks again >>>=20 >>> Steve Izett >>>> On 15 Jan 2015, at 5:59 pm, Tracy wrote: >>>>=20 >>>> Glad to hear you're making progress Steve. A fixed regulator will make= it harder to adjust for constant mixture across the whole range of throttle= settings but should be possible. I'm only seeing 5-10 degrees delta on wat= er but 40-50 degrees on oil at cruise power. I think that is typical. >>>>=20 >>>> Tracy >>>>=20 >>>> Sent from my iPad >>>>=20 >>>>> On Jan 15, 2015, at 04:12, steve Izett w= rote: >>>>>=20 >>>>> Hi Guys >>>>>=20 >>>>> I put the prop on the Glasair today and ran it with a load for the fir= st time! >>>>> Smother running and seams to be cooling thus far with 82F OAT. >>>>> Again - big thanks Tracy for making this possible. >>>>> What pressure do you guys have in your fuel rails, ours is a fixed reg= ulator. >>>>>=20 >>>>> I=E2=80=99m in the garage at home so not taking the engine past 2400 R= PM. >>>>> Cant wait to get it down to our hangar and run it up properly! >>>>>=20 >>>>> Do you guys measure in and out of your coolers? >>>>> I=E2=80=99m getting a delta of about 13F on the oil cooler and very li= ttle on the water. >>>>> Any wisdom, or data? >>>>>=20 >>>>> Thanks >>>>>=20 >>>>> Steve Izett >>>>> Glasair Super IIRG Renesis 4 port RD1-C EC2 EM3 >>>>>=20 >>>>> >>>>=20 >>>> -- >>>> Homepage: http://www.flyrotary.com/ >>>> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/L= ist.html >=20 --Apple-Mail-20EC6FE6-650F-42D4-9510-A5BBDD2C19ED Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Steve,
    FWIW= , I've never checked my temps at idle (1500 is about idle) but I doubt those= numbers mean much.  Even at 5000 they don't mean much if the airplane i= sn't moving.

Back home now so will send that code.  Be aware tha= t the EM3 code was written in compiled Basic so you will need the Pic Basic P= ro compiler to do anything with it.

Tracy
Sent f= rom my iPad

On Jan 16, 2015, at 01:55, Stephen Izett <flyrotary@lancaironline.net>= ; wrote:

Hi Tracy
I rechecked the delta=E2=80=99s again a 15= 00RPM and Ive got approx, 12F on the oil and 9F on the water.
Are you home yet to send me that code for the EM3?

Cheers

Steve Izett
On 15 Jan 2015, at 10:17 pm, Tracy <= flyrotary@lancairo= nline.net> wrote:

Yes,  fl= ow rates are very different (about 35 - 40 GMP for the water) and water has a= higher specific Heat (ie, calories per gram per deg F delta) than oil. &nbs= p;So the oil has to have a much higher delta to carry away the same amount o= f heat.  The lower flow rate just increases that factor.   The oil= also does much more of the cooling job in a rotary than a piston engine. &n= bsp;About 1/3 of of the cooling is via the oil.  

Tracy
Sent from my iPad

On Jan 15, 2015, at 05:47, steve Izett <flyrotary@lancaironline.net> wrote:
Hi Tracy
Thanks for the data. Any wisdom on w= hy the difference?
I thought water would transfer heat f= aster than oil! Are the flow rates vastly different?
Th= anks again

Steve I= zett
On 15 Jan 2015, at 5:59 pm, Tracy <flyrotary@lancaironline.net> wrote:
Glad to hear you're= making progress Steve.  A fixed regulator will make it harder to adjus= t for constant mixture across the whole range of throttle settings but shoul= d be possible.  I'm only seeing 5-10 degrees delta on water but 40-50 d= egrees on oil at cruise power.  I think that is typical.

Tracy

Sent from my iPad

On Jan 15, 2015, at 04:12, steve Izett <flyrotary@lancaironline.net> wrote:

Hi Guys

I put the prop on the Glasair today and ran it with a load for the first t= ime!
Smother running and seams to be cooling thus far with 82F= OAT.
Again - big thanks Tracy for making this possible.
What pressure do you guys have in your fuel rails, ours is a fixed r= egulator.

I=E2=80=99m in the garage at home so n= ot taking the engine past 2400 RPM.
Cant wait to get it down t= o our hangar and run it up properly!

Do you guy= s measure in and out of your coolers?
I=E2=80=99m getting a de= lta of about 13F on the oil cooler and very little on the water.
Any wisdom, or data?

Thanks
Steve Izett
Glasair Super IIRG Renesis 4 port RD1= -C EC2 EM3

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Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lan= caironline.net:81/lists/flyrotary/List.html


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