Thank you very much for answers. I understand all it. My stock 18/44 was top speed 322 kmh at 14000 rpm. On my 19/41 top speed should be 365 kmh. So no need on 37 sprocket. If i will go this 365(345 gps speed) i will be the happiest man. ))))) this week i should recieve SF-T racing fuel. May be it will help. By the way i dont know why but on this speed my new pirelli supercorsa v3 was destroyed.
Tire chunked from wheelslip
at that speed every bump or undulation causes the wheel to miss a bit of pavement and spin slightly , i would think from seeing that to allow about 5% wheelslip in your speed calcs
and your aero is everything , if your broad shouldered , it will hurt top speed