<div class='quotetop'>QUOTE (Tom @ Mar 17 2009, 04:25 PM)
<{POST_SNAPBACK}><div class='quotemain'>Firstly, where any of the GP replica 2 stroke bikes even big bang? I don't think they were, but i'm not sure. Secondly, motogp has been 4 stroke for just 7 years, if you could give a few examples from the last 7 years of the two trokes of significant GP derrived technology that was used in production machines i'd love to hear about it and i'd doubt it'll be more than what has trickled down since. thirdly,
it would be foolish to credit the big bang NSR as being the technology used in the the current GP bikes or cross plane R1, if it was actually the case the original R1 could easily have had it.
ok tom here goes...
http://en.wikipedia.org/wiki/Grand_Prix_motorcycle_racing
<div class='quotetop'>QUOTE <div class='quotemain'>Chronology
1973: Deaths of Jarno Saarinen and Renzo Pasolini at the Italian round at Monza.
1982: The Yamaha OW61 YZR500 is the first V4 in the 500cc class.
1985: Michelin introduces radial tyres in GPs.
1987: Push starts are eliminated.
1988: Wayne Rainey wins the first 500cc race using carbon brakes, at the British GP.
1990: 500cc grid switches from 5 to 4 bikes per row.
1992: Honda introduces bike with big bang engine.
1993: Shinichi Itoh and fuel-injected NSR500 break the 200mph barrier at the German GP at Hockenheim.
1998: 500cc switch to unleaded fuel.
2002: 990cc 4-strokes allowed in premier class.
2003: Daijiro Kato dies, leading to Suzuka's removal from the calendar.
2004: MotoGP grid switches from 4 to 3 bikes per row.
2004: Makoto Tamada earns Bridgestone their first MotoGP victory at the Brazilian GP.
2005: MotoGP adopts flag-to-flag rule, meaning races continue if rain begins.
2007: MotoGP restricted to 800cc 4-strokes.
2008: Dunlop drops out of MotoGP.
2009: Michelin drops out of MotoGP and Bridgestone become sole tyre providers.[5][6]
2009: Kawasaki Suspends MotoGP activities for 2009 and considers privateer team.
1. the first V4 in gps ....yes, it was a 2-stroke and it led to some tasty yam 500cc bikes for me and you...(if you were old enough)
2.radial tyres to cope with the increased horsepower/speed of a gp bike...now adorning a large selection of 2 wheelers. yes, the tech may have come from 4 wheels, but it was transferred to bikes because they needed it!
3. THE BIG BANG ENGINE.
the mechanicals might be different but the concept was born from a honda 2 stroke gp machine.
they didnt really know why it worked until recently but it does work and now your R1 has it too (in some form)
4.fuel injected 2 strokes! lessons learned from gps helped it find permanence on todays bikes.(the injection tech that is).
5. any idea whats required to get a bike that runs on leaded to run reliably on unleaded? think light weight bore coatings (nikasil) and piston coatings with a helping of improved cooling systems and much improved oil/lubrication tech..again, all an unseen part of the new bikes that run today.
so, is this because the gp bikes were 2strokes? no, i believe they would have come around anyway but racing has a funny way of making things go faster! so to sum it all up, 2strokes were a necessary part of the evolution of race bikes, all of it relevant at the time but now mostly surpassed by newer tech/ideas