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FJR Motorcycle Forums
Technical & Mechanical Problems
Simulated FJR vs C14 race
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<blockquote data-quote="MCRIDER007" data-source="post: 920451" data-attributes="member: 329"><p>There is something wrong with your assumptions and the resulting charts. When calculating pure acceleration you should use foot pounds of energy being delivered to the rear wheel (torque times gear ratio) to determine shift points...which is usually redline or slightly past redline. The FJR and C14 have pretty similar gear ratios but the C14 has a huge advantage in torque above 7500 rpms...where it is going to be the entire time after shifting into second gear. It also has a redline 1500 rpms higher than the FJR giving it a even greater advantage in energy being delivered to the rear wheel for much of the contest. The FJR is going to be very competitive until it has to shift into second gear and then the party will be over...and that is exactly what happens in real life when doing first gear roll-ons at 20 mph (which takes the rider's ability to launch from a dead stop out of the equation).</p></blockquote><p></p>
[QUOTE="MCRIDER007, post: 920451, member: 329"] There is something wrong with your assumptions and the resulting charts. When calculating pure acceleration you should use foot pounds of energy being delivered to the rear wheel (torque times gear ratio) to determine shift points...which is usually redline or slightly past redline. The FJR and C14 have pretty similar gear ratios but the C14 has a huge advantage in torque above 7500 rpms...where it is going to be the entire time after shifting into second gear. It also has a redline 1500 rpms higher than the FJR giving it a even greater advantage in energy being delivered to the rear wheel for much of the contest. The FJR is going to be very competitive until it has to shift into second gear and then the party will be over...and that is exactly what happens in real life when doing first gear roll-ons at 20 mph (which takes the rider's ability to launch from a dead stop out of the equation). [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Simulated FJR vs C14 race
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