| As CK said I had my bike on the same Dyno as Rattler, Pscyhlist and Senna3 all there on the same day.
My 583 knocked out exactly the same peak power as Senna3's 675, making mine just as powerful ! that is until you looked futher down the rev range where the difference grew to around 5bhp in favour of the 675, so its not all down to peak power, more to do with power under the curve, sometimes a bit of top end power will be traded for mid range grunt, quite often the case when Hi Comp pistons are used without any cylinder head work as you get a bigger bang for your fuel load but outright power is still limited by the flow rate through the head.
Be interesting to know how a 68bhp bike differs from a 62bhp bike and the 65bhp bike, may just be down to a well designed exhaust that scavanges well matched to perfect fueling, something AK spent a lot of time trying to find. |