Originally Posted by
daven1986
Was just thinking about Di2. Can you:
- set it so it keeps you at a specific cadence? i.e. it changes gear automatically to keep you spinning at the same speed?
- set it so it automatically changes gear to the next highest / lowest? i.e. it automatically shifts the front and rear derailleurs to get the next gear in the sequence when you choose to shift up.
If not, surely this kind of thing should be the next step?
Daven
Not sure if Shimano is working on this (but they probably are), but Fairwheel Bikes has done your second:
http://www.cyclingnews.com/features/...ipped-hardtail
Integrating automatic shifting by cadence wouldn't be tough- Shimano already does that on the Nexus Auto-D:
http://cycle.shimano-eu.com/publish/...o_inter-3.html
I'm not certain I'd want this. It's kind of the difference between a manual and an automatic transmission in a car: with a manual, the driver can select the gear in anticipation of the approaching terrain or curve. With an automatic, it shifts only after it senses a change in load. (Although there are some incredibly sophisticated automatic trannys in cars now.)