Which umbrella do you prefer ?

10 Silverstone Great Britain 2012 MotoGP
29 Misano Circuit San Marino 2011 MotoGP
12 Mugello Italy 2011 MotoGP
35 Estoril Circuit Portugal 2011 MotoGP
30 Estoril Circuit Portugal 2011 MotoGP
8 Phillip Island Australia 2010 MotoGP
14 Mugello Italy 2010 MotoGP
9 Le Mans France 2010 MotoGP
10 Indianapolis 2010 MotoGP
4 Misano Circuit San Marino 2009 MotoGP
18 Indianapolis 2009 MotoGP
22 Estoril Circuit Portugal 2007 MotoGP
29 Donington Park Great Britain 2007 MotoGP
26 Donington Park Great Britain 2007 MotoGP
57 Jerez Spain 2007 MotoGP
29 Estoril Circuit Portugal 2006 MotoGP
26 Laguna Seca United States 2006 MotoGP
38 Donington Park Great Britain 2006 MotoGP
22 Donington Park Great Britain 2006 MotoGP
20 Assen Netherlands 2006 MotoGP
32 Le Mans France 2006 MotoGP
12 Losail Circuit Qatar 2006 MotoGP
4 Jerez Spain 2006 MotoGP
7 Valencia 2005 MotoGP
 

ASK KEVIN: Do Motorcycle Engines Use Knock Sensors?

ASK KEVIN: Do Motorcycle Engines Use Knock Sensors?

QUESTION: There's a warning sticker on the Kawasaki Concours C14: "Use minimum of 90-plus octane gasoline to prevent severe engine damage." Are knock sensors (of any type) impracticable on a motorcycle engine? Robert Bodenhamer Woodstock, GA ANSWER: Yes indeed, detonation sensors can be and are...

Published on July 16 2015, 15:29
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: Why do we use a given valve in a four-stroke engine as either an intake or exhaust valve? Why not use a valve for both intake and exhaust, then add some sort of switch to channel the gasses in the direction of either the intake or exhaust tract? Jeffrey Haasch Kirkland, Washington... 

QUESTION: Why do air-cooled motors generate more emissions than water-cooled ones? Why can't they just engineer cooler and cleaner air-cooled engines to meet the new emissions regulations? Silas B. Laubmann Atlanta, GA ANSWER: Differences between air- and water-cooled engines have been with us a... 

QUESTION: Ride by wire is a de facto part of modern motorcycling. Bravissimo. With multi-mode fueling maps, traction control, six-axis stability control, we now have safer, more reliable motorcycles. I'm all for that. My question is about sensor durability. I presume much of what we enjoy... 

Delphi's ionized current-sensing ignition subsystem uses conventional spark plugs as "in- cylinder" sensors for combustion quality. A few weeks ago, a reader wrote in to ask about the use of detonation detectors on motorcycle engines. I wrote then about the microphone and accelerometer types of... 

2016 heralds a new era for MotoGP. Two major changes take place to the technical regulations: Michelin replaces Bridgestone as the official tire supplier (for more background on that, see the interview we did at Brno with Michelin boss Piero Taramasso), and everyone will be forced to switch to... 

Here at MO we like scooters, especially big ones. Laugh if you want, but when it comes to practical, versatile, comfortable, and fun two-wheeled transportation, scooters often get overlooked. Well, we're here to give them their fair share. What other motorcycle will take you to the grocery...