X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=HLeBLclv c=1 sm=1 tr=0 a=gTgBEJriY5Vot0Yhb3gGRA==:117 a=x7bEGLp0ZPQA:10 a=xXDCcK6TKBsA:10 a=7mUfYlMuFuIA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=eRLigfuSAAAA:8 a=0xykHovjIK5ETVTDm5gA:9 a=QEXdDO2ut3YA:10 a=EFhaVe0-wUf5nW-Lgr4A:9 a=yn5qeEizO_IL3v59:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=BfhXYjFvZD4iae-mNffo:22 From: "Todd Bartrim bartrim@gmail.com" Received: from mail-ed1-f48.google.com ([209.85.208.48] verified) by logan.com (CommuniGate Pro SMTP 6.2.5) with ESMTPS id 11288228 for flyrotary@lancaironline.net; Fri, 22 Jun 2018 00:58:41 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.48; envelope-from=bartrim@gmail.com Received: by mail-ed1-f48.google.com with SMTP id t3-v6so486143eds.3 for ; Thu, 21 Jun 2018 21:58:42 -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=oRMm15qKWdmWkH+xcb974d6XljgMn3kIRyOAjh4w9Fc=; b=iPmqUis9HS2vPLplwnfsZaTTjBozrQjTqCfUR7RNR+n7hjS+dWbfyEZkw5HSzT5mHN O6DXqE12Fsg3D54whAg4AJJ22MKvQ4lcNpVptNjyIxAFzjNRtdFNJM4LHb8F6xVxz9Oi zhRsEBc7K7HT6kni6rBsTUyCanA5Bodw4MiP1XtG7m/ehU5En2P1x8tPyNzuu2157Gm9 bIOuS3osSbDAQGLMQnTH1Qb+TEYB0MKC7IODRXNbqWynRZkRKEnPVVuEhELp33cElIp7 J6fg7D8SowW7ROVDFyzIFYqBsknhSPXAdw9g5SuqFPJ2kvPQolwXCIjSGzrx1HqyAFqo Bffg== 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=oRMm15qKWdmWkH+xcb974d6XljgMn3kIRyOAjh4w9Fc=; b=odpJ8sxaed5st04TkY3gLpRH9r+yjo9n0o7lbx2MgJRCfSHjOLysPmqrsP9B3Se80x d4a0NiqTkitpRqRddcusAnMth91TTl3lvDnXs1wHTuwtlJfRdUOEPwMaDTC2oqrcm+jQ Tt9AxJvq9U/by+YbBHWkryvfYNt4cXEiMaDPQ7HbsoZbuFCFiIts2LD8zSEp230yCMxI wDV/wZ0r+Pjp/5gX+0jAdklb7/lASULGh4dbk5ETYUBKZqtFhDaqWAsgY1yX2k+tluql f3Knu9BHma4ma33h7lqbydg8nwNNiJuF17Pg4993ZOc14rh74d/oSvTDVd1xwCYSBj4v gTbQ== X-Gm-Message-State: APt69E1dXiNK6dqfAgxUZIHheDwUvuyAIIKRqeTSwyqGz3EpN62OdSxM t1hPPZBVOZYALUTi7QYFEiaZVEWaOEMSOXaHvA== X-Google-Smtp-Source: ADUXVKKmS2CVwBHwaMYMYnpZ5L2IbN4dbCFPQxz8ZkSIlpZALrBd9czmgjM+4uiUh3Z6eYlDPTHMtLye6VVpHhTL1tY= X-Received: by 2002:a50:b043:: with SMTP id i61-v6mr409143edd.309.1529643504839; Thu, 21 Jun 2018 21:58:24 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Thu, 21 Jun 2018 21:58:11 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Oil cooler thermostat To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000bd3b22056f33e170" --000000000000bd3b22056f33e170 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ok, I think I might pull it out tomorrow. I took it out last week to inspect it to make sure it wasn't sticking. Should've just kept it out. "Cold" is quite relative to where we live. -20=C2=B0C is still fine for out= door recreation, but much colder and it's not much fun. -30=C2=B0C and I avoid d= oing much work outside. I took this plane out flying once when the temps were pushing -20=C2=B0 a= nd with the liquid heat it was quite toasty in the cabin (this was after I installed the EBP so I still had heat during descent) but the aircraft performance was.... fun to say the least! Todd..... Alaskan's would scoff at me On Thu, Jun 21, 2018, 20:51 Neil Unger 12348ung@gmail.com, < flyrotary@lancaironline.net> wrote: > Andrew, Try "power with racing" (PWR) in Brisbane who specialise in > rads. Dear but good, Neil. > > On 6/22/2018 12:31 PM, Andrew Martin andrew@martinag.com.au wrote: > > Ok, I am in just a bit warmer climate than you, winter solstice yesterday > and its a sunny 22c today. > I can not see any reason to have an oil thermostat, at least here in > Australia, with stock 20b cooler I could only use about 50% power before > cooking the oil with a 13b. > Can't really comment about flying with cold oil. I would count that as a > total victory if ever in that situation. > Aftermarket remote oil thermostats are available if you need one in the > system. > I tried a 75mm thick aircond condenser as I had a couple of new ones that > were originally going to be used for coolant, better but not good enough. > still seeing 235-240f on partial throttle takeoffs, 175f on descent. no > thermostat, but possibly too much internal restriction as predicted by > Steve B. > This weekends project is to add more sensors before cooler just to > possibly confirm the inevitable need to purchase & import a fluidyne. loc= al > cooler mfrs have been absolutely no help. > > Andrew. > > > > > > > On Fri, Jun 22, 2018 at 8:59 AM, Todd Bartrim bartrim@gmail.com < > flyrotary@lancaironline.net> wrote: > >> Some (most?) Of you are using custom or at least aftermarket oil coolers >> but I think there are a few like me that are using stock oil coolers. Ho= w >> many have removed the thermostat and plugged the bypass hole? >> Do any of the non-stock coolers have a thermostat? >> A Google search on the subject shows that on the RX7 forums it seems to >> be generally accepted to leave it alone. >> But for our use I'm less inclined to think we always need it and it >> seems to be quite restrictive. >> Of those flying without one in either stock or non-stock, how many are >> flying in warm climates only? Anybody in cold? Jeff? >> I'm just concerned about winter flying especially during a long descen= t >> where it might cool excessively and then if I was required to use sudden >> power for a missed approach, would that cold oil be a problem? >> >> Todd >> > > --000000000000bd3b22056f33e170 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Ok, I think I might pull it out tomorrow. I took it out last week to inspec= t it to make sure it wasn't sticking. Should've just kept it out.
"Cold" is quite relative to where we live. -20= =C2=B0C is still fine for outdoor recreation, but much colder and it's = not much fun. -30=C2=B0C and I avoid doing much work outside.=C2=A0
=C2=A0 I took this plane out flying once when the temps were pushing -20= =C2=B0 and with the liquid heat it was quite toasty in the cabin (this was = after I installed the EBP so I still had heat during descent) but the aircr= aft performance was.... fun to say the least!
=C2=A0 =C2=A0
=
Todd.....=C2=A0 Alaskan's would scoff at me

On Thu, Jun 21, 2018, 20:51 Neil Unger 12348ung@gmail.com, <flyrotary@lancaironline.net> wrote:
=20 =20 =20

Andrew,=C2=A0 Try "power with racing" (PWR) in Brisbane wh= o specialise in rads.=C2=A0 Dear but good,=C2=A0 Neil.


On 6/22/2018 12:31 = PM, Andrew Martin andrew@martinag.com.au w= rote:
Ok, I am in just a bit warmer climate than you, winter solstice yesterday and its a sunny 22c today.
I can not see any reason to have an oil thermostat, at least here in Australia, with stock 20b cooler I could only use about 50% power before cooking the oil with a 13b.
Can't really comment about flying with cold oil. I would count that as a total victory if ever in that situation.
Aftermarket remote oil thermostats are available if you need one in the system.
I tried a 75mm thick aircond condenser as I had a couple of new ones that were originally going to be used for coolant, better but not good enough. still seeing 235-240f on partial throttle takeoffs, 175f on descent. no thermostat, but possibly too much internal restriction as predicted by Steve B.
This weekends project is to add more sensors before cooler just to possibly confirm the inevitable need to purchase & import a fluidyne. local cooler mfrs have been absolutely no help.
=
Andre= w.
=





On Fri, Jun 22, 2018 at 8:59 AM, Todd Bartrim = bartrim@gmail.com <flyrotary@lancaironline.net> wrote:
Some (most?) Of you are using custom or at least aftermarket oil coolers but I think there are a few like me that are using stock oil coolers. How many have removed the thermostat and plugged the bypass hole?
Do any of the non-stock coolers have a thermostat?=C2=A0=
A Google search on the subject shows that on the RX7 forums it seems to be generally accepted to leave it alone.
=C2=A0 But for our use I'm less inclined to think we always need it and it seems to be quite restrictive.=C2=A0<= /div>
=C2=A0 Of those flying without one in either stock or non-stock, how many are flying in warm climates only? Anybody in cold? Jeff?=C2=A0
=C2=A0 I'm just concerned about winter flying especi= ally during a long descent where it might cool excessively and then if I was required to use sudden power for a missed approach, would that cold oil be a problem?=C2=A0

Todd=C2=A0

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