Two-stroke

  1. Yamaha RD-engined Cagiva Mito 350(.)

    LOUD3R Score: 1040 - Jul 1, 2008

    A 62bhp Mito is indeed what Cagiva should be building themselves Pics: PB mag forumFound this Cagiva Mito on the PB mag forum. The webpage doesn’t say anything about which ... Full Article At Wikio - Blogs

  2. MotoGP Rule Changes: 250GP is History

    LOUD3R Score: 1342 - Jun 29, 2008

    Posted on 06.29.2008 08:10 by Holly McBain Filed under: | Moto GP | industry news Today, the Federation Internationale de Motocyclisme (FIM) announced the end of the 250GP class. The sanctioning body unanimously... Full Article At Top Speed - motorcycles

  3. Grand Prix Commission accepts 600GP.

    LOUD3R Score: 316 - Jun 27, 2008

    Topics:

    Grand Prix Commission accepts 600cc four-strokes as replacement for the 250GP Two-stroke class from 2011.... Full Article At Crash.Net MotoGP

  4. Yamaha YZ85

    LOUD3R Score: 951 - Jun 19, 2008

    Posted on 06.19.2008 16:03 by Maxx Biker Filed under: Yamaha | dirt bikes | Yamaha YZ Yamaha's new YZ85 stands as one of the best means to power... Full Article At Top Speed - motorcycles

  5. Honda Motocompo Fits In Your Tiny Trunk! [Retro](Mark Arnold)

    LOUD3R Score: 1072 - Jun 19, 2008

    Tiny Japanese cars from the '70s and '80s are awesome, but can you really fit anything more than a small suitcase or a couple bento boxes in the back? Actually, yes. In fact, back in the '80s, Honda sold the City with a motorcycle in the... Full Article At Wikio - Blogs

  6. Victory For Guillaume & Bourgeois At WEC GP Of Poland

    LOUD3R Score: 1093 - Jun 16, 2008

    Victory For Guillaume & Bourgeois At WEC GP Of Poland CH Racing Husqvarna riders Seb Guillaume and Marc Bourgeois ensured that ... Full Article At Dirt Rider

  7. New Aprilia 125s

    LOUD3R Score: 744 - Jun 16, 2008

    Aprilia SX125 The SX and RX 125 are the latest on/off-road machines from Aprilia, sharing a 125cc Two-stroke single cylinder engine that meets Euro3... Full Article At Fast Bikes

  8. 2009 Yamaha RD350 Concept

    LOUD3R Score: 791 - Jun 13, 2008

    Two-stroke sportbikes are an extinct breed, but this concept sketch gives us a glimpse into what could be possible if new technology allows it to meet Exhaust emissions regs.... Full Article At Motorcycle.com - Yamaha

  9. Casey Stoner reserves judgement on new 600cc proposal

    LOUD3R Score: 736 - Jun 11, 2008

    Reigning world champion Casey Stoner has said he will reserve judgement on the merits of a new 600cc Four-stroke series to replace the current 250GP ... Full Article At MCN - Sport

  10. My designs for new Yamaha TDR and RD's

    LOUD3R Score: 942 - Jun 10, 2008

    These are my proposal sketches for a new Yamaha RD350 and Yamaha TDR350 twin. Both would be Two-stroke with fuel injection and... Full Article At MCN - News

  11. Ask The MXperts: What About The Two-Stroke Race

    LOUD3R Score: 10 - May 28, 2008

    Topics:

    ... Full Article At Motocross Action

  12. Energtek Completes First Successful Natural Gas Conversion of Two Stroke Engine for Commercial Use

    LOUD3R Score: 207 - May 27, 2008

    Topics:

    VALLEY STREAM, New York, May 21 /PRNewswire-FirstCall/ –     - Thousands of Highly Polluting Two-stroke Vehicles in the Philippines will be Similarly Converted Using Energtek’s Proprietary ANG Technology    ... Full Article At Biker-events.com

  13. Aprilia To Return To MotoGP

    LOUD3R Score: 1338 - May 22, 2008

    The proposed changes to the 250 class - with the 250 cc Two-stroke twins likely to be replaced with rev-limited, spec ECU 625cc Four-stroke inline fours - is having an unexpected effect on the... Full Article At Kropotkin Thinks

  14. 250GP replacement to be unveiled Saturday

    LOUD3R Score: 272 - May 15, 2008

    The Four-stroke replacement for 250cc Two-stroke racing will be unveiled at the Grand Prix de France this weekend. It’s expected that the class will be replaced by 600cc ... Full Article At Hell for Leather

  15. Four-strokes to replace 250 GP class, rules to be announced in France this weekend(.)

    LOUD3R Score: 461 - May 15, 2008

    End of the road for Two-stroke 250s, begining of a new era for Four-stroke 600s in GP racing? A sad day for those who remember Max Biaggi... Full Article At Wikio - Blogs

  16. Two-strokes to be phased out of MotoGP

    LOUD3R Score: 743 - May 15, 2008

    Replacement class rumoured to be 600cc four-strokes. So, a bit like World Supersport then?... Full Article At Visordown - News

  17. Aprilia RX125 and SX125 first test

    LOUD3R Score: 1248 - May 15, 2008

    MCN has just arrived back from the world launch of Aprilia's SX125 and RX125 Two-stroke Supermoto and trail motorcycles, revamped to meet... Full Article At MCN - News

  18. Return of the two-stroke? Perhaps!

    LOUD3R Score: 2192 - Apr 24, 2008

    Posted on 04.24.2008 14:57 by Maxx Biker Filed under: Honda Suzuki Yamaha | supersports | Racing What if I would tell you that the ... Full Article At Top Speed - motorcycles

  19. Bultaco returns, minus cool bikes

    LOUD3R Score: 921 - Apr 23, 2008

    Famous for its Spanish lightweight trials and Enduro bikes, Bultaco, another remnant of the  Two-stroke era, is being brought back from the dead... Full Article At Hell for Leather

  20. ATK Intimidator 700 proves two-strokes aren't dead yet

    LOUD3R Score: 882 - Apr 18, 2008

    Apparently no one's told Utah-based ATK Motorcycles that two-strokes are dead. Their 700 Intimidator features a 78bhp, 700cc Two-stroke engine in a top-drawer ... Full Article At Hell for Leather



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Two-stroke

Wikipedia

The two-stroke internal combustion engine differs from the more common four-stroke engine by completing the same four processes (intake, compression, combustion, exhaust) in only two strokes of the piston rather than four. This is accomplished by using the beginning of the compression stroke and the end of the combustion stroke to perform the intake and exhaust functions. This allows a power stroke for every revolution of the crank, instead of every second revolution as in a four-stroke engine. For this reason, two-stroke engines provide high specific power, so they are valued for use in portable, lightweight applications such as chainsaws as well as large-scale industrial applications like locomotives.

Invention of the two-stroke cycle is attributed to Dugald Clerk around 1880 whose engines had a separate charging cylinder. The Crankcase scavenged engine, employing the area below the piston as a charging pump, is generally credited to Joseph Day (and Frederick...More Two-stroke @ wikipedia

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