X-Virus-Scanned: clean according to Sophos on Logan.com From: "steve Izett" Received: from mail-pa0-f54.google.com ([209.85.220.54] verified) by logan.com (CommuniGate Pro SMTP 6.1c2) with ESMTPS id 7422989 for flyrotary@lancaironline.net; Sun, 18 Jan 2015 08:20:51 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.54; envelope-from=steveize@gmail.com Received: by mail-pa0-f54.google.com with SMTP id fb1so33262197pad.13 for ; Sun, 18 Jan 2015 05:20:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:message-id:mime-version:subject:date:references :to:in-reply-to; bh=rqQJ5xM6YFTDQohbKPProWUeKyimrfYCJ1rG4fEPd5E=; b=Ar93RXRkAtmvutw8qY2SzM8Hv18rrU4tL+nKibvgAKthKTGrayZIRqu2CXOaD1GlF7 SknHQFshCs+aSi0sFyoJzQ5iNK8HUdeY3n5ibcyWihiVCe1uYzJ4jjVshW9QBtx4njb9 FwuGB+fU4XeI4YAzAU14IUxvVtCQJZHEgtuxk6fhqK7gf9zTr8n7/xByCqz9ACswwMtB NMEV8eEwLtpUIFEru1jeaE7uYIR8AUu4gIOqunKPRDY9xBvaCURMvu7+7mw68A+/dBcD 3p520M5JPkiTj99LaheCgtn+PKnOFNgPiUE5rpZhQGIbNFJGnhx6bvshfZIhqLM5INQO r9Bg== X-Received: by 10.68.68.131 with SMTP id w3mr25943018pbt.107.1421587217053; Sun, 18 Jan 2015 05:20:17 -0800 (PST) Return-Path: Received: from [10.1.1.4] (124-148-234-219.dyn.iinet.net.au. [124.148.234.219]) by mx.google.com with ESMTPSA id xc7sm9018694pbc.29.2015.01.18.05.20.13 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 18 Jan 2015 05:20:15 -0800 (PST) Content-Type: multipart/alternative; boundary="Apple-Mail=_5F191E2A-2CC1-42C8-B9CE-CC12058C7E9F" Message-Id: Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Subject: Re: [FlyRotary] Re: First time run with Prop Load Date: Sun, 18 Jan 2015 21:20:10 +0800 References: To: Rotary motors in aircraft In-Reply-To: X-Mailer: Apple Mail (2.1993) --Apple-Mail=_5F191E2A-2CC1-42C8-B9CE-CC12058C7E9F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Tracy Thanks, I=E2=80=99ll read the basic code with interest as I=E2=80=99ve = been playing with the Maximite http://geoffg.net/maximite.html = and Micromite = http://geoffg.net/micromite.html to control my trim and flaps etc. Look forward to reading. Thanks again Steve Izett > On 18 Jan 2015, at 9:02 pm, Tracy wrote: >=20 > 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 isn't moving. >=20 > Back home now so will send that code. Be aware that the EM3 code was = written in compiled Basic so you will need the Pic Basic Pro compiler to = do anything with it. >=20 > Tracy > Sent from my iPad >=20 > On Jan 16, 2015, at 01:55, Stephen Izett > wrote: >=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) than oil. So the oil has to have a much higher delta to = carry away the same amount of 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. About 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 > wrote: >>>=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 vastly 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 water 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 = > = wrote: >>>>>>=20 >>>>>> Hi Guys >>>>>>=20 >>>>>> I put the prop on the Glasair today and ran it with a load for = the first 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 regulator. >>>>>>=20 >>>>>> I=E2=80=99m in the garage at home so not taking the engine past = 2400 RPM. >>>>>> 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 little on the water. >>>>>> Any wisdom, or data? >>>>>>=20 >>>>>> Thanks >>>>>>=20 >>>>>> Steve Izett >>>>>> Glasair Super IIRG Renesis 4 port RD1-C EC2 EM3 >>>>>>=20 >>>>>> >>>>>>=20 >>>>>=20 >>>>> -- >>>>> Homepage: http://www.flyrotary.com/ >>>>> Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html = >>=20 --Apple-Mail=_5F191E2A-2CC1-42C8-B9CE-CC12058C7E9F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi Tracy
Thanks, I=E2=80=99ll read the basic = code with interest as I=E2=80=99ve been playing with the Maximite http://geoffg.net/maximite.html and Micromite http://geoffg.net/micromite.html
to = control my trim and flaps etc.
Look forward to = reading.

Thanks = again

Steve = Izett


On 18 Jan 2015, at 9:02 pm, Tracy <flyrotary@lancaironline.net> wrote:

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 isn't moving.

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

Tracy
Sent = from 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 = 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?

Cheers

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

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) than oil. =  So the oil has to have a much higher delta to carry away the same = amount of 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.  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 why the difference?
I thought water = would transfer heat faster than oil! Are the flow rates vastly = different?
Thanks again

Steve Izett
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 adjust for constant = mixture across the whole range of throttle settings but should be = possible.  I'm only seeing 5-10 degrees delta on water but 40-50 = degrees 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 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 regulator.

I=E2=80=99m in the garage = at home so not taking the engine past 2400 RPM.
Cant wait = to get it down to our hangar and run it up properly!

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 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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