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aprilia_RS250
19th May 2010, 21:06
This stems from a recent drunken debate between two newbs who don't know much about the technical side of motorbikes. Because KB is full of excellent knowledge here is a quick one for ya.

My rs250 does 6k rpm at 110 km/h in 6th. If you divide 110 by 6 you get 18.3 km/h per 1k rpm. So if my bike's maximum output is a bit below 12k rpm does that mean maximum speed is close to 12*18.3=220 km/h?? So what I'm actually asking does the speed linearly increase as your rpms increase as well, or, does a decay in speed occur per 1k increase in rpm? If a decay occurs what's it caused by?

bogan
19th May 2010, 21:15
yip its linear, whats not linear are speedos! though IIRC the RS250 has a digital one so should be accurate.

aprilia_RS250
19th May 2010, 21:28
yip its linear, whats not linear are speedos! though IIRC the RS250 has a digital one so should be accurate.

you the man, thanks!

=cJ=
19th May 2010, 21:42
http://en.wikipedia.org/wiki/Drag_%28physics%29

You might struggle to actually hit that speed too, the power required increases with velocity cubed, so you'll find it harder and harder to accelerate the faster you go.

bogan
19th May 2010, 22:03
http://en.wikipedia.org/wiki/Drag_%28physics%29

You might struggle to actually hit that speed too, the power required increases with velocity cubed, so you'll find it harder and harder to accelerate the faster you go.

most bikes are designed so they can hit max revs in top gear though, otherwise there isn't any reason to have such a tall gear. But take care of that RS250 young fulla, it's an awesome piece of machinery :D