X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=K8pgJGeI c=1 sm=1 tr=0 a=OEVJYw/obVdrmk2EYfkxnA==:117 a=55z/sxGcUIPVrBMYBb4HRw==:17 a=IkcTkHD0fZMA:10 a=x7bEGLp0ZPQA:10 a=_Z_nqdSeG58A:10 a=RgaUWeydRksA:10 a=on22okXAAAAA:8 a=7g1VtSJxAAAA:8 a=Ia-xEzejAAAA:8 a=DpWWtVgQtjAAeVkGSccA:9 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=NPqpj5bUEVj9vR1HIonK:22 a=grOzbf7U_OpcSX4AJOnl:22 a=Urk15JJjZg1Xo0ryW_k8:22 From: "Neil Unger 12348ung@gmail.com" Received: from mail-pf0-f182.google.com ([209.85.192.182] verified) by logan.com (CommuniGate Pro SMTP 6.2.1) with ESMTPS id 10635709 for flyrotary@lancaironline.net; Mon, 29 Jan 2018 17:14:56 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.182; envelope-from=12348ung@gmail.com Received: by mail-pf0-f182.google.com with SMTP id y26so6688380pfi.10 for ; Mon, 29 Jan 2018 14:14:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=4QHfPYnoY103iJXBPYjMyJ4q0gbaXA75hr8CursfgTU=; b=FDQcHzheemlg/cQv1WGsyZ8lGQvv20JhATn8tpM24J9MP6iYgcLF3Jxat4aeOjrqXj aTRd+vZyxMU6gNgGKjle2gP2QY8ZI3VVYgNRoFsfSqshDY8IKPCt1mb5HfYFGCihe7Fi fJXmMF56e0LNgcHt4oFK4PgEuVnJbQeW2eN6tmAqHztxAlkvq5JPHLnM1lH2U1W0890n VH0f/fNggiLk9gsqLIOeMK75K6uqHv3NAlZZpfR+aY0P4aro7AV+3aMv53qK7cbReZhb USC66+QeC3m/qsfduFfF/TMeDqfCTRdWlwvRLCFyPEgEvOhoqAk2g+A9ewdz8pX49XxS c4hw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=4QHfPYnoY103iJXBPYjMyJ4q0gbaXA75hr8CursfgTU=; b=rYYjfT58kbh6iVbsnohb/1OAfxIoDIjGcHPFDEY1a5TDbqYbSjELrvxvQDVMeEfWLL dxOuwVSgyELlessCmXAjVdb+oGd7YxkM4l1u8PAaSdpbAT5+ujjWhRMsOqSMBSi/bhHH H9/cSReNPEXVpr5YvCEkRrjLWDPeoHHp34fK6r+yTnXmSck324mKbnN3axhZLNwO1RKu MLJlcZNG5OO3TiomrS+LmI19QKv27ZiToLIroh2xUhbliFliTtUNJbqys4Ui7bzvtYC7 NL7AGyi0cFHssznLwsctpyjzteY6eo6r/VVwDG+70DqhAxOgC1mfE3tTRG776dzeIsgz C+Wg== X-Gm-Message-State: AKwxytftRuSRQLpVTkhCqc06e1yISf/i4BCceS7Y6OPMgD/5BDQgKQ9E xXu4ImsC1miJ/ZWTFETOMtHJJyIr X-Google-Smtp-Source: AH8x226Ximkaor0AshI3uRE7rygWlljHbmws/no5QafwAAkKBCOfZs+mffNkwpSlEjgWGhl52EbZaQ== X-Received: by 2002:a17:902:6c:: with SMTP id 99-v6mr21247514pla.409.1517264078324; Mon, 29 Jan 2018 14:14:38 -0800 (PST) Return-Path: <12348ung@gmail.com> Received: from [192.168.0.103] ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id n6sm13511919pgd.13.2018.01.29.14.14.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Jan 2018 14:14:37 -0800 (PST) Subject: Re: [FlyRotary] Thermostat for winter operations To: Rotary motors in aircraft References: Message-ID: Date: Tue, 30 Jan 2018 09:14:27 +1100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Jeff,   I also installed a thermostat after trying all the other options, cowl flaps, cardboard over the rad,  and could not get it constant with the 180 degrees.  I have operated much machinery here all fitted with thermostats and have never had a failure for 40 years.  I am more than happy with a thermostat in my renesis -- would do it again every time.  Failures in thermostats are extremely rare, about as common as a prop coming loose.  My thermostat is permanently in place summer and winter.  If worried change it every 500 hours. On 1/30/2018 7:51 AM, Jeff Whaley jwhaley@datacast.com wrote: > Hello All: > Up until this past weekend I have purposefully avoided using a thermostat in my 13B aircraft engine - reason being is that many years ago I had one stick open and another stick closed in my GMC truck. Encouraged by reading Steve Boese's flight report from last fall, I decided to give one a try. Operation up here in the frozen north requires some method of maintaining engine temperature when power is reduced or when it's really cold. Cowl flaps, louvers and mechanical controls are okay but they add a lot of weight and complication VS a simple thermostat. > > I opened up the top of my water pump housing, extracted the bypass plug, removed my 0.75" restrictor plate and inserted a 180F thermostat from Racing Beat. On Saturday I refilled the coolant system, pressurized it and ran the engine up to temperature. On Sunday I bled off the remaining pressure, rechecked the system, pressurized it to 8 PSI and went flying. At first I felt a bit uneasy as the engine warmed up to 185F-indicated while still on the ground - but I assured myself that is what it's supposed to do ! Other than my gauge reading 185F and the device being advertised as 180F it worked flawlessly; temperature never varied at all and there was a good source of cabin heat. OAT was about 3C or 36F at the time. > > My plan is to leave the thermostat in place for now and keep a close watch on engine temps as the OAT rises next spring/summer. I expect it will be removed for summer operations and re-installed again around October 2018 ... we'll see. > > Jeff > 13B, RD1C, 130 hrs TT. > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html