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Difference between revisions of "2004 Honda CBR1000RR development"
2004 Honda CBR1000RR development (edit)
Revision as of 05:12, 23 November 2010
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As a rider initiates a turn and then leans into the turn, the motorcycle rotates around its roll axis, an imaginary horizontal line running fore and aft through the center of mass of the bike and its rider. To create a motorcycle that responds quickly and smoothly to rider input, the major masses need to be placed as close to the bike's roll axis as possible. As an illustration in the opposite extreme, tightrope walkers are fond of carrying a long, weighted pole specifically because such a device slows down input and motion, which helps them remain stable while walking on that long, thin line. | As a rider initiates a turn and then leans into the turn, the motorcycle rotates around its roll axis, an imaginary horizontal line running fore and aft through the center of mass of the bike and its rider. To create a motorcycle that responds quickly and smoothly to rider input, the major masses need to be placed as close to the bike's roll axis as possible. As an illustration in the opposite extreme, tightrope walkers are fond of carrying a long, weighted pole specifically because such a device slows down input and motion, which helps them remain stable while walking on that long, thin line. | ||
Honda engine designers paid special attention to making the CBR1000RR power plant an extremely compact package to enhance mass centralization and reduce the roll polar moment, while yielding other benefits as well. Specifically, consider the RR's bore and stroke. While some engines employ ever-more oversquare dimensions, Honda employed a relatively modest 75mm bore with a 56.5mm stroke to derive a displacement of 998cc. This choice yields a remarkably narrow engine fit into a commensurately narrower chassis, all the better for increased mass centralization and improved ground clearance as well. | Honda engine designers paid special attention to making the CBR1000RR power plant an extremely compact package to enhance mass centralization and reduce the roll polar moment, while yielding other benefits as well. Specifically, consider the RR's bore and stroke. While some engines employ ever-more [[oversquare]] dimensions, Honda employed a relatively modest 75mm bore with a 56.5mm stroke to derive a displacement of 998cc. This choice yields a remarkably narrow engine fit into a commensurately narrower chassis, all the better for increased mass centralization and improved ground clearance as well. | ||
Other measures taken to enhance mass centralization in the CBR1000RR include positioning the starter motor and drive gear on the right side of the engine, which also creates a narrower engine profile for added ground clearance. The 1000RR incorporates a balancer shaft to virtually eliminate secondary engine vibration, and with an eye toward mass centralization it too has been positioned close to the engine's center of gravity. | Other measures taken to enhance mass centralization in the CBR1000RR include positioning the starter motor and drive gear on the right side of the engine, which also creates a narrower engine profile for added ground clearance. The 1000RR incorporates a balancer shaft to virtually eliminate secondary engine vibration, and with an eye toward mass centralization it too has been positioned close to the engine's center of gravity. | ||