The Speed Noise thread below made me think of this question....Just curious. Merry-Xmas
12-21-2007, 11:07 AM
#32
it had turbos and nit... ;) nope.. just modded
definatley had the gearing done/pistons/exhaust... other toys... im sure the carbs weren't even stock. The bike definatley snapped harder then anything else i've ridden. the 290km/h was on the readout... so not sure how accurate it was
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12-21-2007, 11:48 AM
#39
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The speedos are ridiculously optimistic...changing the gearing even slighty makes it much worse.
If you were going an indicated 150mph and dropped one tooth off the front sprocket that same 150mph would really be more like 136mph (stock sprocket would be around 142mph). If the gearing was dramatically changed (i.e. 2 teeth down in the front and 2 or more teeth up in rear) you could easily see a very high indicated top speed, but you're really doing 15-25mph less. A good speed comparison would be the new Suzuki Hayabusa. It's putting somewhere around 175HP to the rear wheel and it still can't manage to break 190mph with the limiter removed. That tells me that you need SERIOUS power to go that fast. Like everything else, aerodynamics are the deciding factor. A rider on a motorcycle is one of the least aerodynamic shapes to try and smooth out. Every single Japanese sportbike (besides the Honda VFR800 for some reason) is at least 8mph slower than the indicated speed. No one but the manufacturers really know why, although there are many theories. I believe the most likely is that they want you to believe you're going faster than you really are. Whether that's a marketing ploy, or a somewhat dishonest safety measure, I'm not sure.