Which umbrella do you prefer ?

12 Laguna Seca United States 2012 MotoGP
21 Mugello Italy 2012 MotoGP
22 Catalunya 2012 MotoGP
21 Le Mans France 2012 MotoGP
20 Estoril Circuit Portugal 2012 MotoGP
12 Losail Circuit Qatar 2012 MotoGP
39 Phillip Island Australia 2011 MotoGP
10 Motegi Japan 2011 MotoGP
26 Laguna Seca United States 2011 MotoGP
8 Sepang Circuit Malaysia 2010 MotoGP
16 Sepang Circuit Malaysia 2010 MotoGP
15 Sepang Circuit Malaysia 2010 MotoGP
1 Losail Circuit Qatar 2010 MotoGP
7 Sepang Circuit Malaysia 2009 MotoGP
4 Sepang Circuit Malaysia 2009 MotoGP
11 Estoril Circuit Portugal 2009 MotoGP
16 Laguna Seca United States 2009 MotoGP
23 Jerez Spain 2009 MotoGP
7 Indianapolis 2008 MotoGP
4 Le Mans France 2008 MotoGP
17 Estoril Circuit Portugal 2007 MotoGP
13 Misano Circuit San Marino 2007 MotoGP
12 Laguna Seca United States 2007 MotoGP
15 Mugello Italy 2007 MotoGP
 

Ask Kevin: Why No Modern Two-Stroke Streetbikes?

Ask Kevin: Why No Modern Two-Stroke Streetbikes?

Question: I theorize that one of the main reasons we don't have modern two-stroke streetbikes is that consumers prefer the sound and feel of a four-stroke. And when I look at the 40-year-old two-stroke technology of my three Kawasaki triples, I wonder what a truly modern two-stroke street bike...

Published on February 9 2014, 17:14
Source: www.cycleworld.com
 

Question: Do two-strokes engines work better when they run leaded gas? And if so, why? TYLER CAREY CYCLEWORLD.COM Answer: All spark-ignition gasoline engines are limited in the compression ratio they can use by the onset of engine knock, or detonation. In racing, it has for 80 years been normal... 

QUESTION: Would you please have Kevin Cameron comment on the benefits of a flat-plane crankshaft? (Thanks for the best technical explanations in print today.) Gordon Banks US Army, Retired Madison, AL ANSWER: The original reason for a flat-plane crank is that it gives an even 180-degree firing... 

Valentino Rossi: "It would be really curious. But I guess that even if the 500 two-stroke bikes would be back, they would never be like the machines I rode. Electronics changes the character of the bikes. Anyway, I would really love to ride a 500cc two-stroke bike again!" Jorge Lorenzo: "No. I... 

QUESTION: During this year's MotoGP race at Misano, Italy, the riders were switching bikes as the weather changed from dry to wet and back to dry again. As each entrant is limited to a fixed fuel quantity for every race, what procedures are in place to keep track of the total fuel used among the... 

The new Indian Thunder Stroke 111 engine is running and I have seen it. Polaris Industries, a $3-billion-a-year corporation, bought the King's Mountain Indian business in April, 2011. What I have seen is an entirely new, free-standing design, sharing nothing with previous Indian revivals or... 

Close your eyes and imagine your favorite motorcycle. What's the common thread of these motorcycles? They're elegantly simple, with little or no bodywork – two wheels, a motor and a gas tank. Everything else is as minimal, only as much equipage as you need to make the bike rideable. But so long... 

We're willing to bet that most off-road enthusiasts are acutely aware of this by now, but in case you haven't heard, two-stroke off-road vehicles manufactured after January 1, 1997 are now prohibited from operation on public lands in California. For those of you operating two-stroke machinery...