Raimo
2nd Gear
Posts: 289
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Post by Raimo on Mar 16, 2017 11:35:38 GMT -5
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Post by pipe welder on Mar 16, 2017 17:08:47 GMT -5
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Post by givr on Mar 16, 2017 17:41:47 GMT -5
Like that linkage on the crank web. Lots more parts but seems like it would lengthen bearing life by sharing the loads over more surfaces.
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Post by Walms on Mar 16, 2017 17:54:03 GMT -5
That cross section gives me the urge to copy it into solidworks...
I guess the big benefit is the connecting rod would move much less fore and aft. Does that translate into? Higher transfer ports maybe? Higher achievable piston speeds? Less force cylinder walls and piston, for sure. That's pretty fricken cool!
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Post by givr on Mar 16, 2017 17:58:55 GMT -5
You bet. Power stroke would be transferred almost entirely in a perpendicular direction for the full stroke. Seems so simple when you look at it.
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Post by Curtis on Mar 16, 2017 20:22:57 GMT -5
Beta Motorcycles have been in the works of this for a few years... I can't wait till we get a few in
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Post by JA-Moo on Mar 17, 2017 11:55:17 GMT -5
You have to watch out for Honda, they patent 100s of ideas a year, just to stop anybody from using them. They patented a free radical 2 stroke years ago that worked great, to just bury it.
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Post by JA-Moo on Mar 17, 2017 11:58:06 GMT -5
I don't see the fascination with a modern 2 stroke. I wouldn't want one, as they will be complex, expensive, and there will be no power kick, that will be removed. Plus no one will build a multiple street version anyway.
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Post by triplepoweredgpz on Mar 17, 2017 12:21:45 GMT -5
Does that have an exhaust valve in the head? Looks like the fuel injector is in the transfers...so it's not "direct injected". Looks fancy pants
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Post by pipe welder on Mar 27, 2017 15:52:52 GMT -5
The Hi Tech Two Strokes are Here.
The 2017 849cc Rotax two-stroke twin weighs 93 pounds and delivers its peak 165 horsepower at 8,000 rpm with more than 106 lb-ft of torque.
- It uses cylinder head voice-coil injectors and booster injectors that have been added at the intake and come into action when you snap the throttle hard at mid-range and high rpm. - The fuel-cooled engine control module (ECM) controls the engine’s electronic activities at a rate of 32 million cycles per second. - A new plasma coating to replace standard nicasil cylinder coatings. This new coating, which results in a slightly porous sponge-like effect to better retain oil, is essentially a superheated steel alloy that is sprayed onto the aluminum cylinder walls to reduce friction. This 850cc engine consumes no more oil than the oil-efficient 600 E-TEC -The piston ring carrier reflects diesel technology as a cast iron insert holds the piston ring to better manage internal micro movements. -
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