I took the Streetfighter our for a bit of a test and wrote some notes on it. For anyone who would like to read about it you can do so here:
lol, I understand that a 4 valve liquid cooled motor makes more power - but crazy as it sounds not everyone wants the most power available I greatly prefer the 2 valve for the reduced weight (they are A LOT lighter), better aesthetic without all the hoses, radiator, etc... and they produce more than enough power and torque to have a good time on a naked bike.Interesting ride report. I don't understand why you feel that naked bikes should be air-cooled. Air-cooling severely limits the performance that can be obtained in a naked bike. The highest performing nakeds in the world are liquid-cooled, like the SF, Tuono and the Super Duke. This is because liquid-cooling allows more heat production in the combustion chamber, thus higher compression ratios, 4-valve technology, etc.
I'm not sure why you found the lower speed handling of the SF so unfriendly. I find it very stable and reassuring at all speeds. It is certainly not nearly as demanding at slow speeds as my Super Duke.
Most people have reported the "flat-spot" in the fueling at around 3500 RPM, not higher as you report. Given this difference in observations, I wonder if your bike was running normally for this model.
I agree that the riding position wears on you after 150 miles or so, but most bikes make a stop around then for fuel pretty welcome .
I agree with that - if you are smooth, going 90mph feels like 50mph. But if you are abrupt on the throttle you better be alert!twist the throttle and you're going fast, but it doesn't feel like it.