There were many reader responses on our editorial regarding the ever-expanding volume of the automobile in America, so why not extend the same questions to motorcycles? Way back in March we featured an article which highlighted the fact that technology is trickling down to motorcycles from cars. There has been a great deal of debate going on as to whether or not motorcycles are really a green form of transportation. This post will not hit each and every facet of either side of the argument, but it is interesting to note that it is possible for manufacturers of motorcycles to hit extremely high horsepower figures while still allowing for reasonable fuel economy.

Unfortunately (or fortunately, depending on your point of view), delivering on the promise of that fuel economy is in the hands of the rider, and when big power is available, riders are likely to twist that wrist ever tighter! So, it came as little surprise that Cycle World was able to wring 45 miles per gallon out of one tank with their Kawasaki Concours 14 testbike, while lowering that number all the way down to 24 miles per gallon from another tank-full. That is a huge disparity, and shows that high power and high fuel economy are possible from the same engine, but not at the same time. The engine in this particular bike happens to be one of the most powerful available in any production bike, maxing out at almost 140 horsepower at the rear wheel with 92 lb. ft. of torque. From a 1.4 liter engine, this is excellent! To make that kind of power, the engine has variable valve timing and electronic fuel injection. The engine also makes full use of its 10.7:1 compression ratio, which is quite high, and 4 valves per cylinder arrangement. This is an excellent engine, and would make an awesome starting point for a hybrid vehicle. But, there it sits installed in a motorcycle!