Why the ever more number of gears
#126
Senior Member
That's correct and Shimano has specifically stated they did NOT want to make Di2 an automated transmission.
However, the potential is certainly there. Some additional programming and sensors could provide a completely sequential gear selection and it could be tied to pedal pressure, cadence or what ever parameters they wanted to measure and incorporate.
However, the potential is certainly there. Some additional programming and sensors could provide a completely sequential gear selection and it could be tied to pedal pressure, cadence or what ever parameters they wanted to measure and incorporate.
#127
Senior Member
There's the hydrogen fuel cell, but of course, that has other problems, cost being the primary one. We may one day make these practical, but for the time being, the all-electric car doesn't fit most Americans' needs. We like to drive long distances between refuelings, and we don't want to wait long at a refueling. It takes 5 or 10 minutes to put gasoline in the tank. It takes hours to recharge a battery. And it's impractical to swap a battery that weighs hundreds of pounds. Maybe one day, we'll have cranes that lift it out and drop a replacement in and a system for doing it quickly.
#128
Senior Member
We'll see a cure for all cancers before we see an answer to the energy problem that's 1/1,000,000 as simple as drilling for oil. You can hold me to those words
#129
Senior Member
#130
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These are designed for folks that can ballance, steer, pedal and brake but can't shift.
tcs
#131
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They have made an autoshifting drivetrain based on their Nexus 8-speed IGH.
These are designed for folks that can ballance, steer, pedal and brake but can't shift.
tcs
These are designed for folks that can ballance, steer, pedal and brake but can't shift.
tcs
Doing the same thing for a two-derailleur drive train would be more complex but, I'm sure could be done, if Shimano thought performance riders wanted it and the weight penalty was minimal.
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In my teens, I had a Schwinn 10-speed (at the time, Ford was in office); since then, I've progressed steadily -- 12-speed in the 80's, 18 speeds, in the late 90's, 24-speed 5-8 years ago, and 9-speed since then. Tried a 21 for a short time, went quickly to 24 on that bike.
6 and 7 speed rear always left me looking for the 'right' gear; the 8-speed rear worked well. I went to 9 because I wanted to try the 'new' SRAM X-series. The result of that? The only Shimano I'll ever run again is XTR brake cables (and maybe FD). SRAM XX 10-speed? Yeah, right, the cassette costs more than my entire X.9 drivetrain! (While I wouldn't mind X.0 shifters, the X.9 does it for me overall! Best system I've EVER used!)
6 and 7 speed rear always left me looking for the 'right' gear; the 8-speed rear worked well. I went to 9 because I wanted to try the 'new' SRAM X-series. The result of that? The only Shimano I'll ever run again is XTR brake cables (and maybe FD). SRAM XX 10-speed? Yeah, right, the cassette costs more than my entire X.9 drivetrain! (While I wouldn't mind X.0 shifters, the X.9 does it for me overall! Best system I've EVER used!)
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