The shifting down even in an emergency becomes automatic, plus if you can pick the right kind of shifters you can shift from low to top in one pedal rotation if needed.
The last time I got caught in the wrong gear with a derailleur was over a decade ago.
The main reason a throttle is not needed (unless the rider has a medical issue) as opposed to wanted is that millions of normal bikes work fine without them.
The last time I got caught in the wrong gear with a derailleur was over a decade ago.
The main reason a throttle is not needed (unless the rider has a medical issue) as opposed to wanted is that millions of normal bikes work fine without them.