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[83.245.236.220]) by smtp.gmail.com with ESMTPSA id c19sm6827044lfg.86.2018.11.21.13.26.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Nov 2018 13:26:14 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: Date: Wed, 21 Nov 2018 23:26:12 +0200 Cc: dpreed@deepplum.com, Make-Wifi-fast Content-Transfer-Encoding: quoted-printable Message-Id: <748E800D-BAE4-46EA-B960-748A6E1F9EAC@gmail.com> References: <1542820640.672319900@apps.rackspace.com> To: Dave Taht X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Make-wifi-fast] Car tire tracking X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Nov 2018 21:26:16 -0000 > On 21 Nov, 2018, at 11:01 pm, Dave Taht wrote: >=20 > I'm going through a terribly retro phase. I got a boat. It doesn't > have any tech later than 1976 in it, powered up, most of the time. I'm > looking to replace the bluetooth enabled radio entirely... once I get > the diesel repaired and the autopilot working again (can't find one of > those that isn't also cross connected, either) By coincidence, I've come across a vlog series about (UK) canal boating. = Small marine diesels currently on the market turn out to be = astonishingly primitive machines compared to anything automotive; the = vlogger's engine actually has a sticker on the sump warning that it's = non-compliant with US emissions regulations for marine diesels. The = larger models produce a nominal 50hp from over 2 litres displacement; = these are technically oversized for a narrowboat, but often fitted = anyway. And these are called "modern" engines, to distinguish themselves from = truly ancient designs from the 1940s and earlier, which are sometimes = still fitted to new or refurbished boats due to their quirky character. = One vlog showed a classic engine which required starting on petrol, with = compression valves opened, before switching to diesel, and another one = which actually required a derogation to be fitted without a silencer, = because it would reliably coke one up if so fitted. The "modern" engines actually take almost as much fuel to keep = themselves running at idle as to drive a 20-ton boat at the canal speed = limit of 4 mph. Some of the more forward-thinking boaters are now = fitting hybrid systems which can better than double their fuel economy = by allowing the diesel to be switched off when not actively recharging = the batteries, as well as allowing long periods of quiet, fume-free = cruising (particularly important when it takes 2 hours to traverse the = Standedge Tunnel). The fuel economy improvements are particularly = marked if electric drive is used to traverse a long series of locks, in = which long periods of idling could otherwise be expected. The main upside to such primitive technology is that it's easy to = service the engine in situ, using hand tools and ordinary mechanical = knowledge. Only major overhauls need the attention of a workshop. - Jonathan Morton