Date: 16 Feb 2005 22:21:43 GMT From: Dave Hinz <DaveHinznospamcop.net> Subject: Re: new saab motor for 9-3 series
On Wed, 16 Feb 2005 22:18:33 GMT, Dexter J <lamealameadingdongnospamlamelame.org> wrote: > > Actually - BMW built them for years, both Porsche and VW swiped the basic > timing and layout for their own engines, the Russians I think still build > them as a cycle motor and they are the stock and trade of most Onan > Generators. Several aircraft engines use a an opposed twin as well. Ah, but that's a boxer - both pistons are at TDC at the same time. Apparently a V-2 or flat V-2 has one at TDC, one at BDC. Lots of mass moving in the wrong directions there. > Not to appear unfriendly or anything - but they are perhaps the most > smooth operational twin cylinder design I can think of off hand actually. > The only trick to them is that the moving components have to be in > practically perfect balance or then, as you comment, they start to beat > themselves to death almost immediately. Synchroninzing those Bing carbs is an absolute bitch, at least on the '77 R100/7 that I had. Nice bike, but MAN, those carbs... Dave Hinz
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