afm199 at earthlink.net
Thu Sep 25 15:09:06 PDT 2008
Yup. At Bonneville a lot of faired bikes will start wheelspin at around
200 mph as air drag overcomes traction available. Another way to look
at: Drop a rock from an airplane at 25,000 feet or 5,000 feet, the
terminal velocity in either case will be around 150-170 mph
On Sep 25, 2008, at 2:50 PM, Ilya A. Kriveshko wrote:
> Ah! Thanks, Richard, for confirming my computation, if not my assumed
> starting numbers.
> Now I need to learn to put the same amount of meaning into fewer words.
> PS: In Russian, there is a slang term that roughly translates as
> diarrhea." Anyone got some verbal Imodium?
> Kabara, Richard M. wrote:
>> Jo, keep in mind that power goes with the cube (3rd power) of speed
>> for aero drag. At those speeds, mechanical drag is a small percentage
>> of total drag, assume it zero. Assume aero drag is the same for both
>> These are ROUGH numbers for illustration:
>> GSX-R1000 150 rear wheel-hp 180mph top speed
>> SV650 70 rear wheel-hp 140mph top speed
>> (180mph/140mph)^3 = 2.1
>> 150hp/70hp = 2.1
>> So the GSX-R1000 has more than double the hp, but only goes ~30%
>> faster than the SV...
>> Mother Nature is a real bitch!
More information about the SV650