Half a croissant, on a plate, with a sign in front of it saying '50c'
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Automatic Bicycle

You will never have to change gears again!
  (+5, -2)
(+5, -2)
  [vote for,

Ok, really simple idea that is probably baked, why not attach some kind of rotary strain gauge to the front gear system on a bicycle (the ones which you pedal) in order to detect whether you are in the right gear or not. The small piece of electronic equipment connected to the strain gauge could automatically select the correct gear that you should be in!
Nathan Barley, Jan 31 2007

(??) Sort-of baked, m'afraid... http://www.yonge-cv...-it-works-bike.html
Don't think derailleur (spelling, Wagster!), think CVT [Azazello, Feb 01 2007]

"automatic shifting bicyle" on google http://images.googl...&btnG=Search+Images
[BJS, Feb 01 2007]


       And I thought it was only me that kept finding that my bike was in the wrong gear! [+]
pertinax, Feb 01 2007

       What powers the derailer?
wagster, Feb 01 2007

       Bicycles are very efficient machines - what you're proposing is adding extra stuff (strain gauges, automatic gear shifters) which would absorb energy and reduce efficiency (and occasionally go wrong, need maintenance or break). Not worth it just for the tiny benefit of not having to think about gear changes in my opinion.
hippo, Feb 01 2007

BJS, Feb 01 2007

       I once saw a very comprehensive info- mercial for these in the USA.
xenzag, Feb 01 2007

       Oh my god - CVT for bicycles, how halfbaked is that? 'Pologies for the spelling [Azaz], I meant "disraeli" of course.
wagster, Feb 01 2007


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