Dyno read-out

[qldzxr250a]

Just had the PCIII installed and full service and dyno tune:

Loving the results:
K&N Filter
Leo vince exhaust
and the PCIII

Max Power - 128.89 @ 13,000RPM
Max Torque - 56.89
31.93*C
26% HUMIDITY

Was running really rich but all is good now.....

SO SMOOTH, SO CRISP.....

mmmm.....its love...

[jrandom]

But how fast does it go, mister?

[qldzxr250a]

it showed 299 on my speedo but was in reality not even close about 270-275ish...as per dyno readout

[jrandom]

it showed 299 on my speedo but was in reality not even close about 270-275ish...

You mean it spun the rear wheel at 299kph on the dyno?

I mean, how fast does it actually go...

[qldzxr250a]

no spun the 270's was highlighting my speedo was way off

[slopster]

but thats not unusual mine says 270 on southern motorway and the gps (which I taped to my arm!) says 255

[owner]

I thought in general speedos were accurate at 88mph and can be 15% out the further away from that you get

[vifferman]

I thought in general speedos were accurate at 88mph and can be 15% out the further away from that you get

No, in general speedos are optomistic by anywhere from 3% to 10% (generally about 6) all the way across the range. Most modern speedos are electronic, and work from a pulse generator. There's no reason for their accuracy to vary at different speeds, although they may well be less accurate at very low speeds.
My speedo is pretty much right (not that it matters, as each 10km/h mark is only a poofteenth of an doohickey away from the ones either side). However, my odometer now reads 12% less than actual mileage.