interesting engine
in [Design]
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From: Martin Riddle on 22 Jul 2010 19:08 "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in message news:5v4h461k2q37f9fj20umjubhfvn1qd1o20(a)4ax.com... > On Thu, 22 Jul 2010 19:34:50 +0100, nospam <nospam(a)please.invalid> > wrote: > >>Tim Wescott <tim(a)seemywebsite.com> wrote: >> >>>On 07/22/2010 08:29 AM, John Larkin wrote: >>>> >>>> http://www.ecomotors.com/technology >>> >>>Few of those "new and innovative" "green" engines are doing anything >>>newer than rehashes of basic concepts that were tried and abandoned* >>>before 1910. >> >>When all they can show is rendered 3D models you know it is all just >>bollocks which had a green label stuck on it to attract venture >>capital. >> >>So much easier and safer sticking with computer models instead of >>building >>something which will demonstrate you are only getting half your >>claimed >>performance for a few hours before it falls to bits. > > Aha! It's used in the Audi A3 ?:-) > Audi has been using VW engines, are they changing? Cheers
From: Nunya on 22 Jul 2010 19:23 On Jul 22, 4:08 pm, "Martin Riddle" <martin_...(a)verizon.net> wrote: > "Jim Thompson" <To-Email-Use-The-Envelope-I...(a)On-My-Web-Site.com> wrote > in messagenews:5v4h461k2q37f9fj20umjubhfvn1qd1o20(a)4ax.com... > > > > > On Thu, 22 Jul 2010 19:34:50 +0100, nospam <nos...(a)please.invalid> > > wrote: > > >>Tim Wescott <t...(a)seemywebsite.com> wrote: > > >>>On 07/22/2010 08:29 AM, John Larkin wrote: > > >>>>http://www.ecomotors.com/technology > > >>>Few of those "new and innovative" "green" engines are doing anything > >>>newer than rehashes of basic concepts that were tried and abandoned* > >>>before 1910. > > >>When all they can show is rendered 3D models you know it is all just > >>bollocks which had a green label stuck on it to attract venture > >>capital. > > >>So much easier and safer sticking with computer models instead of > >>building > >>something which will demonstrate you are only getting half your > >>claimed > >>performance for a few hours before it falls to bits. > > > Aha! It's used in the Audi A3 ?:-) > > Audi has been using VW engines, are they changing? > > Cheers VW OWNS Audi, AND Porsche. D'oh!
From: langwadt on 22 Jul 2010 19:33 On 23 Jul., 01:23, Nunya <jack_sheph...(a)cox.net> wrote: > On Jul 22, 4:08Â pm, "Martin Riddle" <martin_...(a)verizon.net> wrote: > > > > > "Jim Thompson" <To-Email-Use-The-Envelope-I...(a)On-My-Web-Site.com> wrote > > in messagenews:5v4h461k2q37f9fj20umjubhfvn1qd1o20(a)4ax.com... > > > > On Thu, 22 Jul 2010 19:34:50 +0100, nospam <nos...(a)please.invalid> > > > wrote: > > > >>Tim Wescott <t...(a)seemywebsite.com> wrote: > > > >>>On 07/22/2010 08:29 AM, John Larkin wrote: > > > >>>>http://www.ecomotors.com/technology > > > >>>Few of those "new and innovative" "green" engines are doing anything > > >>>newer than rehashes of basic concepts that were tried and abandoned* > > >>>before 1910. > > > >>When all they can show is rendered 3D models you know it is all just > > >>bollocks which had a green label stuck on it to attract venture > > >>capital. > > > >>So much easier and safer sticking with computer models instead of > > >>building > > >>something which will demonstrate you are only getting half your > > >>claimed > > >>performance for a few hours before it falls to bits. > > > > Aha! Â It's used in the Audi A3 ?:-) > > > Audi has been using VW engines, are they changing? > > > Cheers > > VW OWNS Audi, AND Porsche. Â D'oh! V.A.G. owns Volkswagen, Audi, Seat, Å koda, Porsche, Bentley, Bugatti and Lamborghini. Volkswagen, Audi, Seat, Å koda is all the same bits and pieces in slightly different combinations and packaging -Lasse
From: m II on 22 Jul 2010 20:33 John Larkin wrote: > My first wife had a Kawasaki 500 three-cylinder two-stroke bike. 0-60 > in 4 seconds, if it didn't seize up or go unstable and toss you into > the weeds. She lost her spleen on that one. I had one too. It was an H1. Someone called it the world's first disposable motorcycle. The only thing it did well was accelerate. It didn't brake, corner or save gasoline. If used as intended, the piston rings had to be changed every 10 to 12 thousand miles. That is quite surprising, as it used injection oil at an alarming rate. Think chain saw on steroids. The 900 four stroke which followed it was relatively civilized in comparison. mike
From: Clifford Heath on 23 Jul 2010 06:37
Tim Wescott wrote: > AFAIK they were sorta-kinda the same idea as the Junkers Jumo -- opposed > pistons, running somewhat out of phase, with ports on the cylinder > walls. How the pistons were driven was the big difference, with the two > main competitors being one crank + linkage, or two cranks + gearing to > synchronize them. The two-stroke diesel has a modern derivative too, see http://www.zoche.de/ I've held the crank for one of these - interesting journal design allows all rotating and reciprocating masses to be exactly balanced, so the engine is quieter than an electric motor of comparable power... as well as having half the frontal area of an aviation 4-stroke. It's a pity that aero engine certification is so determinedly stuck in the 1950's... Clifford Heath. |