Which umbrella do you prefer ?

21 Mugello Italy 2012 MotoGP
2 Estoril Circuit Portugal 2012 MotoGP
23 Phillip Island Australia 2011 MotoGP
12 Sepang Circuit Malaysia 2010 MotoGP
15 Mugello Italy 2010 MotoGP
32 Jerez Spain 2010 MotoGP
10 Laguna Seca United States 2009 MotoGP
3 Le Mans France 2009 MotoGP
20 Misano Circuit San Marino 2007 MotoGP
16 Brno Czech Republic 2007 MotoGP
18 Mugello Italy 2007 MotoGP
34 Jerez Spain 2007 MotoGP
20 Estoril Circuit Portugal 2006 MotoGP
19 Estoril Circuit Portugal 2006 MotoGP
31 Motegi Japan 2006 MotoGP
26 Phillip Island Australia 2006 MotoGP
19 Sepang Circuit Malaysia 2006 MotoGP
13 Sepang Circuit Malaysia 2006 MotoGP
26 Laguna Seca United States 2006 MotoGP
19 Donington Park Great Britain 2006 MotoGP
7 Valencia 2005 MotoGP
6 Phillip Island Australia 2005 MotoGP
8 Losail Circuit Qatar 2005 MotoGP
18 Motegi Japan 2004 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... 

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... 

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... 

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... 

Why is the motorcycle industry in a rut? I understand that consumer demographics are changing as baby boomers are aging and aren't really buying motorcycles anymore. Gen-Xers? Well, as the last of the analog generations, you guys have basically been passed over in light of rapid advances in...