Lambchop,
markk
your calculations include fuel/clothes/fluids etc?
is you bike an 02?if so weight dry is 186kg? so needs a fair bit more power than mine to be more
just used guess calculations of 186kg for bike,70kg for rider and power of 137bhp and that gives 535bhp/tonne. try addin heavy leathers n fluids in yer calculations
no m8 , its an 04 bike weighs 186kgs dry plus fuel etc and me is 276kgs
and it puts out just over 146 at the wheel with a few mods
so i was actually slightly out

529bhp/tonne

all for less than £7500