I have a 50/34 11-32 setup
don't really know what should be best in semi-synchronized mode: when shifting up in front, shift down 2 or 3 gears in the rear?
are there people with the same setup here who can post a screenshot of their shift map?
This is what I am trying at the moment, shifting 2 gears, with an 50-34 and 11-32.
Syncro_1132_2.png [ 20.13 KiB | Viewed 564 times ]
The shift up to the big ring with 14T to 18T on the rear is pretty seem-less and causes me no problems, no matter how unexpected.
On an 11-32 cassette, rear shifts give changes in gearing between 108% and 114%, so I've looked for shifts as close to that range as possible, trying to get close to the rear shifts either side. I think that is one reason why the up shift at 14T, dropping back to 18T works well, as it 114.4%, very close to the shift up from 16T to 14T and also the next one from 18T to 16T.
The shift down to the little ring is a bit rough if I don't anticipate it, as it first gets too easy to pedal and then the rear shifts back from 28T to 22T and it's OK again, but for a second or two I am spinning too freely. I'm not sure why the change up is smoother? Perhaps it is because it happens at a higher speed and there is more momentum to soak up the brief pause while the rear gears sort themselves out?
It would be better to change down earlier, but for some reason e-tube does not allow you to change down on the front before the biggest two cogs on the rear!
So the change up at 14T to 18T seems ideal for 2 shifts, but others give bigger steps, so I will try 3 shifts, which would give one more gear and slightly reduce the chances of a change in the front.
Here is my map for 3 shifts.
Syncro_1132_3.png [ 21.71 KiB | Viewed 564 times ]
The best upshift is probably at 12T, shifting back to 16T, or 13T to 18T if you want a little less cross chaining.
Unfortunately, the ideal down shift is at 22T, shifting back to 16T and e-tube won't allow this to be configured. I really can't imagine that it is deliberately restricted to changing only when the largest two cogs are selected, in fact the exact opposite would make more sense, so I hope that at some time this will be noticed and fixed, hopefully the next time they update e-tube!