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Performance:- Quick-Shifter

The dyno chart below shows the advantage gained with a modified Honda CBR 600. The power drop off is significantly reduced along with the time duration of the gear change. The distances covered on this rolling start acceleration from 40 - 230 kph (approx.) are 303 metres for standard versus 313 metres with the Rapidshift. This 10 metre gain works out to an average of 2.5 metres per gear change.
This almost seamless acceleration also makes power delivery smoother (Typical power drop of 30bhp versus 60bhp) lessening the chance of rear wheel side step during hard acceleration with the bike angled over


Further reason for increased rider confidence during cornering is the fact that the throttle position doesn't have to be disturbed every gear change (especially tricky when on the limit of tyre grip and wet track surface). This is more difficult to do without the quickshifter as the throttle has to be shut off every gear change upsetting the front to rear balance of the bike and loosing any finely tuned throttle position setting. Good examples of hard acceleration with severe lean angles (on U.K. circuits) are Mallory Park's Chicane and Gerrards, Brands Hatch's Clearways and Surtees and Thruxton's long fast sweeping curves.
Combining the advantage of the faster corner speed and increased momentum carried on to the straights with the gain of up to 2.5 metres per gear change. (say 10 - 25 up-shifts per lap), it becomes clear that a saving of up to 1 second/lap is possible.
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