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Will Di2 levers/shifters work without being connected to battery?

frankbegbiefrankbegbie Posts: 12
edited November 2018 in Workshop
Building a bike and just wondered if I can use say, Dura Ace Di2 shifters with Ultegra 6700 gears, manually?
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  • frankbegbiefrankbegbie Posts: 12
    I don't see a problem if your rear mech is 10 speed and so is your freewheel and so are the shifters.

    They should work as if it was just mechanical and not electronic, or am I missing something?
  • cougiecougie Posts: 22,512
    Eh ? What ? Well no because they don't pull any cable through so your gears won't change.

    Brakes yes. Gears no.

    Or am I misunderstanding you?

    Oh and no battery - no changes. Otherwise why would you need the battery.
  • cooldadcooldad Posts: 32,599
    Yep, it's electronic. Works with wire and motors, not cables.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • imposter2.0imposter2.0 Posts: 11,964
    frankbegbie wrote:
    I don't see a problem if your rear mech is 10 speed and so is your freewheel and so are the shifters.

    They should work as if it was just mechanical and not electronic, or am I missing something?

    You're missing a lot of winking smilies, as you must be joking...
  • frankbegbiefrankbegbie Posts: 12
    Ok so now I know. been looking around at a few video's and none mention that NO cables are involved.

    New to this so was under the impression that you changed manually via a cable and the electronics part performed micro adjustments for the perfect change.

    Which begs the question what happens if the electric cable gets cut?

    Needless to say, so I will, I won't be bothering.
  • imposter2.0imposter2.0 Posts: 11,964
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...
  • frankbegbiefrankbegbie Posts: 12
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    You can always carry a spare cable though.
  • imposter2.0imposter2.0 Posts: 11,964
    frankbegbie wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    You can always carry a spare cable though.

    Sounds like Di2 is not for you...
  • frankbegbiefrankbegbie Posts: 12
    Imposter wrote:
    frankbegbie wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    You can always carry a spare cable though.

    Sounds like Di2 is not for you...

    Dead right mate. Always found with mechanical things you can almost always find a solution to a problem to get yourself through.
    It's a lot more difficult with electronics.
  • cooldadcooldad Posts: 32,599
    I suggest sticking to a steel single speed.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • imposter2.0imposter2.0 Posts: 11,964
    frankbegbie wrote:
    Dead right mate. Always found with mechanical things you can almost always find a solution to a problem to get yourself through.
    It's a lot more difficult with electronics.

    Which kind of begs the question - why were you considering electronic shifting in the first place?
  • cougiecougie Posts: 22,512
    Shall we tell him about etap ?
  • shortfallshortfall Posts: 3,288
    Is it just me or are there lots more of these threads recently?
  • frankbegbiefrankbegbie Posts: 12
    Imposter wrote:
    frankbegbie wrote:
    Dead right mate. Always found with mechanical things you can almost always find a solution to a problem to get yourself through.
    It's a lot more difficult with electronics.

    Which kind of begs the question - why were you considering electronic shifting in the first place?

    Just for information. I saw some cheap Dura Ace Di2 levers on Ebay and wondered why.
  • gethincerigethinceri Posts: 1,332
    Why what, why they were cheap?
  • cooldadcooldad Posts: 32,599
    frankbegbie wrote:
    cooldad wrote:
    I suggest sticking to a steel single speed.

    fark off eh?

    nobstick.

    Sorry, didn't recognise you without your bike.

    f9cQVCe.jpg
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • StillGoingStillGoing Posts: 5,207
    frankbegbie wrote:
    I don't see a problem if your rear mech is 10 speed and so is your freewheel and so are the shifters.

    They should work as if it was just mechanical and not electronic, or am I missing something?

    Quite a lot it seems. Knowledge of the subject, experience and manners to name a few from your posts so far.
    I ride a bike. Doesn't make me green or a tree hugger. I drive a car too.
  • LivewireLivewire Posts: 91
    frankbegbie wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    You can always carry a spare Di2 cable though.

    FYI
  • craigus89craigus89 Posts: 887
    frankbegbie wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    You can always carry a spare cable though.

    Carry a spare cable.
  • Vino'sGhostVino'sGhost Posts: 4,129
    drink some bleach
  • shortfallshortfall Posts: 3,288
    Vino'sGhost wrote:
    drink some bleach

    :D:D:D
  • First.AspectFirst.Aspect Posts: 11,410
    Pleased to see that some people on this forum are doing their bit to keep average IQ to a manageable level.
  • Tetragrammaton1Tetragrammaton1 Posts: 72
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    Not quite. Cut a mechanical gear cable and the mech goes straight to the smallest sprocket / ring.
  • craigus89craigus89 Posts: 887
    Tetragrammaton1 wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    Not quite. Cut a mechanical gear cable and the mech goes straight to the smallest sprocket / ring.

    Insightful as ever.
  • imposter2.0imposter2.0 Posts: 11,964
    Tetragrammaton1 wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    Not quite. Cut a mechanical gear cable and the mech goes straight to the smallest sprocket / ring.

    So what?..you still end up with an inoperable mech, either way.. :roll:

    Seriously Nick - you need psychological help. You've been banned four times already and you still have this tragic need to come back with yet another new username and post more stuff which is pointless, irrelevant or just flat out wrong. Take the hint...
  • Tetragrammaton1Tetragrammaton1 Posts: 72
    Imposter wrote:
    Tetragrammaton1 wrote:
    Imposter wrote:
    frankbegbie wrote:

    Which begs the question what happens if the electric cable gets cut?

    The same thing that would happen if a steel cable got cut...

    Not quite. Cut a mechanical gear cable and the mech goes straight to the smallest sprocket / ring.

    So what?..you still end up with an inoperable mech, either way.. :roll:

    Seriously Nick - you need psychological help. You've been banned four times already and you still have this tragic need to come back with yet another new username and post more stuff which is pointless, irrelevant or just flat out wrong. Take the hint...

    You were wrong about what you said though, the Di2 system will leave you in whichever gear you were in when the cable failed, the mechanical one will put you in a different gear, that’s a significant difference, which I thought was well worth pointing out, and certainly isn’t “wrong”.
  • craigus89craigus89 Posts: 887
    Tetragrammaton1 wrote:
    You were wrong about what you said though, the Di2 system will leave you in whichever gear you were in when the cable failed, the mechanical one will put you in a different gear, that’s a significant difference, which I thought was well worth pointing out.

    In the context of this thread it isn't significant in the slightest. The OP is clearly a bit dim, and Imposter's response was obviously intended to highlight that, not get into the technicalities of how Di2 works.

    Your pedantry is not helpful in the slightest.
  • imposter2.0imposter2.0 Posts: 11,964
    Tetragrammaton1 wrote:

    You were wrong about what you said though, the Di2 system will leave you in whichever gear you were in when the cable failed, the mechanical one will put you in a different gear, that’s a significant difference, which I thought was well worth pointing out, and certainly isn’t “wrong”.

    Only in your own clueless imagination was I wrong. A cable break will render both mechs inoperable - if you want to debate that, go and do it elsewhere and stop embarrassing yourself here.
  • Tetragrammaton1Tetragrammaton1 Posts: 72
    Craigus89 wrote:
    Tetragrammaton1 wrote:
    You were wrong about what you said though, the Di2 system will leave you in whichever gear you were in when the cable failed, the mechanical one will put you in a different gear, that’s a significant difference, which I thought was well worth pointing out.

    In the context of this thread it isn't significant in the slightest. The OP is clearly a bit dim, and Imposter's response was obviously intended to highlight that, not get into the technicalities of how Di2 works.



    Your pedantry is not helpful in the slightest.

    That depends on your point of view I guess. Maybe the OP is still around, maybe he now knows something new.
  • imposter2.0imposter2.0 Posts: 11,964
    Tetragrammaton1 wrote:
    That depends on your point of view I guess. Maybe the OP is still around, maybe he now knows something new.

    The OP will certainly have learnt to disregard your fanciful nonsense in future..
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