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FJR Motorcycle Forums
Technical & Mechanical Problems
Simulated FJR vs C14 race
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<blockquote data-quote="UselessPickles" data-source="post: 921266" data-attributes="member: 3256"><p>Interesting observation: temperature and humidity don't seem to have much of an effect on top speed.</p><p></p><p>I added air density calculations (affects drag) and SAE horsepower correction factor calculations based on air temp, pressure and humidity. Just from experimenting with a few combinations ranging from 60°F to 90°F and various humidity levels, the top speed reached in the simulation only varied by about 1mph. Looks like the extra power from the denser air cancels out the increased drag from denser air.</p><p></p><p>So if atmospheric conditions are not the cause for wildly varying top speed reports on bikes, then it must be other factors like indicated vs actual speed, wind, saddlebags on vs off, and slight uphill/downhill roads. For example, I've found reports of the C14's top speed ranging from 152mph to 168mph.</p></blockquote><p></p>
[QUOTE="UselessPickles, post: 921266, member: 3256"] Interesting observation: temperature and humidity don't seem to have much of an effect on top speed. I added air density calculations (affects drag) and SAE horsepower correction factor calculations based on air temp, pressure and humidity. Just from experimenting with a few combinations ranging from 60°F to 90°F and various humidity levels, the top speed reached in the simulation only varied by about 1mph. Looks like the extra power from the denser air cancels out the increased drag from denser air. So if atmospheric conditions are not the cause for wildly varying top speed reports on bikes, then it must be other factors like indicated vs actual speed, wind, saddlebags on vs off, and slight uphill/downhill roads. For example, I've found reports of the C14's top speed ranging from 152mph to 168mph. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Simulated FJR vs C14 race
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