On Tuesday, July 16, 2019 at 2:31:41 AM UTC+2, James wrote:
On 15/7/19 11:11 pm, AMuzi wrote:


One trivial example:
Shifting with meatware leads some large number of riders into
small-small most of the time. Electronic systems can't shift there!


Do they prevent large-large combination too? Why?

As long as it doesn't rip the derailleur off because the chain is too
short, is there any real danger shifting to large-large, or small-small
for that matter?

At worst it may cause a little front derailleur rub, AFAICT, and
additional wear on the chain perhaps.

I don't intentionally shift to large-large or small-small, but by
accident occasionally, nothing catastrophic happens.

--
JS

Like I said I can shift any combination on my crossbike with Ultegra Di2. It is just software that you can configure.

Lou