AnythingButKestrel said:It has nothing to do with perpetual motion. It has everything do with parasitic collection of energy. ....
And I'm so happy that having exact matching extra everything is so cheap and easy for you. Now, I'll let you guys go grouse about how e-shifting sucks and is the end of the world. Sheesh....
OK, to explain the phrase "perpetual motion machine" ... Such a machine is a physical impossiblity, as it would have to be creating more energy than it is using energy. Although the phrase is usually used in a tongue in cheek sense, your description in your second email of the "recharge as you go system" is getting closer to convincing me that you are in fact expecting Shimano to build one!
And as for your sarcastic dig at me for having "exact matching extra everything" ... It is really quite easy to do - simply look for products from manufacturers who: still sell the spare parts; don't change their specs every five minutes; and build parts to last ... Kinda common sense really - and it truly would be "so easy for you" (to turn your phrase back on yourself)... and I'd suggest that working out how to do that is a much more worthwhile thing for most people to do than lusting after Di2 - or whatever other latest "necessity" various companies tell us all that we need ... Of course, if buying new kit all the time is your recreation or otherwise gives you enjoyment - fill your boots ... just don't expect me to be convinced by all of your arguments of advantages or of the necessity of doing it ....