From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 1e8e988d for ; Sat, 31 Aug 2019 15:23:01 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 34AA59C0A7; Sun, 1 Sep 2019 01:23:00 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id E78339C0C1; Sun, 1 Sep 2019 01:22:31 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 1A8E69C0A7; Sun, 1 Sep 2019 01:22:28 +1000 (AEST) X-Greylist: delayed 494 seconds by postgrey-1.36 at minnie.tuhs.org; Sun, 01 Sep 2019 01:22:26 AEST Received: from sdaoden.eu (sdaoden.eu [217.144.132.164]) by minnie.tuhs.org (Postfix) with ESMTPS id C32F79C00B for ; Sun, 1 Sep 2019 01:22:26 +1000 (AEST) Received: by sdaoden.eu (Postfix, from userid 1000) id 59C1316054; Sat, 31 Aug 2019 17:14:10 +0200 (CEST) Date: Sat, 31 Aug 2019 17:14:10 +0200 From: Steffen Nurpmeso To: Dave Horsfall Message-ID: <20190831151410.uywnr%steffen@sdaoden.eu> In-Reply-To: References: <13c5c36e-c84d-e020-d09e-51c8c502dc6d@kilonet.net> <20190828231952.GA536@mit.edu> <3173aba3-b6c3-43db-6374-b600f3217f13@kilonet.net> <004ec49789583b190ca7c302db9fbb31@firemail.de> <20190829191943.BfJ86%steffen@sdaoden.eu> Mail-Followup-To: Dave Horsfall , The Eunuchs Hysterical Society User-Agent: s-nail v14.9.15-24-gef25e36d OpenPGP: id=EE19E1C1F2F7054F8D3954D8308964B51883A0DD; url=https://ftp.sdaoden.eu/steffen.asc; preference=signencrypt BlahBlahBlah: Any stupid boy can crush a beetle. But all the professors in the world can make no bugs. Subject: Re: [TUHS] If not Linux, then what? X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Hello. Dave Horsfall wrote in : |On Thu, 29 Aug 2019, Steffen Nurpmeso wrote: |>|Today however not in the 80ths. Inn those days all 4 cars were Richie \ |>|Rich cars. |> |> And only the Mazda had that wonderful smooth engine which replaces |> pounding pistons with nice chuckling triangles. | |[ Getting OT... ] Yes, sorry for that. |Too bad about the seals, though... They had this habit of wearing out. I do not think this is actually true. I think it was "not false" for the first series of the NSU Ro80 at the beginning of the 70s, but materials engineering is what made such unbelievable progress ever since, it always leaves me just speechless. "Not false" in that it likely was dependent on the way of driving even back then. I definitely have heard stories of people still driving Ro80 first series, original. And for later ones, say Mazda RX-8, i think it is a problem of the past, anyway. I just looked, and Mazda finally gave 100000 Miles guarantee for the seals. I mean, in the end these are industry products which compete in a surrounding market, and i do not mean this positively. For example, the Lenovo laptop i bought this year grants itself a four year lifetime (states the manual for the Russian market, for which such statements seem to be required). The problem of the Wankelmotor is the form of the combustion chamber, which is even worse than for the Otto (or Diesel) piston engine, even less spherical. Modern injection systems and electronical management can overcome this a bit. You know, i will never forget the IAA (car exhibition in Frankfurt/Main Germany) either at the end of the 80s or the beginning of the 90s, where Toyota shewed high-speed videos of the combustion process. It was rather trial-and-error before, with a lot of things tried (piston forms, multiple spark plugs, electronical spark control), but Toyota came up with diet mix engines at that time, and started to use direct injection (iirc). This is not new, i think we had that already for fighter plane engines in WWII, but it was trial and error. With those videos and better gauges the combustion process was better understood, and resulted in improved efficiency and exhaustion behaviour. I was surprised that the Atkinson engine which drives at least the Honda and Toyota Hybrid cars does not use direct injection, but rather the suction line one again, but it is the end of decades of science and exploration, right. Some Atkinson engines use a mixed injection that also includes direct injection it seems (Lexus?). --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)