Rumbles wrote:.......has anyone else measured their top end speed on an 05 zx12r?(with gps or dyno)......
Dyno's don't use top gear for power runs, its usually 4th gear. At least thats what my local dyno place told me.
You would be hard-pressed to find a dyno that would do a run in top-gear, it would load up the engine too much.
A stock 05 ZX12R *will not* exceed 299 *indicated* because of the top-gear limiter. If this is bypassed with a TRE, you might be able to squeeze 310 *indicated* on a good day. Thats
indicated speed. Speedo error of only 5% would reduce this to about 295. Speedo error can be up to 10%, the error factor generally gets higher the faster you go.
The quickest that AMCN saw from an *unrestricted* ZX12R back in 2000 was 304kmh, measured using a radar. When my 05 was dynoe'd, as soon as it hit redline, the exhaust note sounded like 2 cylinders had the spark shut-down, it just refused to rev past that certain point. I would think that the rev-limiter is just built into the tacho-reading read by the computer....I know that on the last WSB run to PI, I hit the rev-limiter twice, in 3rd and 4th, chasing Ponti and Strika to the Tintaldra Pub !!! The bike just stopped revving and went 'brrp brrp brrp'......
The only track in Australia that would be capable of supporting a ZX12R at full noise is Phillip Island. the straight at EC is far too short. There may be a million country back-roads where people hit 300km every day of the week, but the only way to really prove any top-speed claims is with a radar reading, I don't think a dyno or GPS could really give you an accurate measurement.
