On Sat, 17 Feb 2018 20:19:24 -0500, Frank Krygowski
wrote:

On 2/17/2018 2:58 PM, Joerg wrote:

So give us some numbers here, in seconds. How long does it take to shift
from large-small to small large, in one swoop? Faster than this below?

https://www.youtube.com/watch?v=3SHJ7KoJIys

I can shift a lot faster than that with friction shifters. Not with
indexed ones on the handlebar or brifters.

With friction, you may be able to slam a shift faster across the entire
cassette under the right circumstances. But that tiny time advantage
will be lost after just a few normal shifts.

It doesn't matter to me for my riding. I still use friction shifters on
several bikes. But I certainly don't do it because of faster shifts.

I even read a description of shifting both front and rear derailers at
the same time. Reach across the frame, thumb on one shifter, finger on
the other. Twist your hand and shift the rear derailer from the
smallest cog to the largest and with the same movement the front from
the largest to the smallest.

Think how many time you shift from the highest gear to the lowest in
one fell swoop on your usual Sunday ride :-?
--
Cheers,

John B.