On 2018-02-18 08:18, wrote:
On Sunday, February 18, 2018 at 4:47:46 PM UTC+1, Joerg wrote:
On 2018-02-17 13:05, wrote:
On Saturday, February 17, 2018 at 8:57:49 PM UTC+1, Joerg wrote:
On 2018-02-17 01:28, wrote:
On Friday, February 16, 2018 at 7:32:10 PM UTC+1, Joerg
wrote:

[...]


Actually, in some situations ye olde friction shifters are
better than anything that came later. In situations where
you must quickly shift from a very high gear straight to
almost the lowest, that can be achieved in about one second
simple by an opposite flick of thumb and index finger on
the downtube levers. Only with friction shifters. Ok, a
Rohloff or a similar hub transmission could also do that.
Can Di2?

Of course.


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


3-3.5 sec.


See? Just what I said, this is _way_ slower than good and well
maintained friction shifters. My road bike is only 7-speed but Di2
would never be able to rival the shifting speed of friction.
Brifters, yes, but it can't hold a candle to friction.


... (11 speed ) under full load and out of the saddle if you want
(it will make some noise) and the FD is trimmed after that. You
can shift front and rear at the same time.


You can shift front plus back with just about any other shifter as
well and I do that a lot.


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

I don't think so.


It is so. Have you ever had them?

Of course, 30 years ago and I did all the things you describe and
what Jay described. I would like to invite you on one of my off road
trips and I'm confident that I kick your ass. Not because I am that
good but only because your shifting will be slower every time.


As I said now I have a mountain bike for offroad and don't have to
torture my road bike there anymore. Plus it's 6000 miles from here.




. ... One may have some reasons to prefer friction
shifters but speed of shifting can't be a reason. Strange that
Pro riders don't use friction shifters anymore because they like
fast shifting.


That is because in Europe "pro" means road racing. I have always
preferred paths off the beaten track even well before there were
mounain bikes.

Even in Europe pro rider would benefit from faster shifting with your
DT friction shifters and your technique.


On paved roads? Highly doubtful.

[...]

--
Regards, Joerg

http://www.analogconsultants.com/