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  1. Check the rubber grommet inside the pump head...

    Check the rubber grommet inside the pump head that it doesn't get mangled. It might be blocking the hole and thus not allowing air to get into the tube.

    Remove the extender and insert into the...
  2. There are tubes with removable valve cores...

    There are tubes with removable valve cores (mostly the branded ones), and there are those that are not (i.e. cheap Taiwan-made tubes). Where I'm at the LBSes here stock mostly the latter, and I'm too...
  3. Yeah, have had that happen to me as well. For the...

    Yeah, have had that happen to me as well. For the life of me, I couldn't figure why it shouldn't work when it doesn't, when it works fine most of the time.

    Just gave up thinking about it - made me...
  4. The RD-6800 has a different cable pull ratio than...

    The RD-6800 has a different cable pull ratio than RD-6700. That said, 11s and 10s components have different cable pull ratios and are generally incompatible.

    Your ST-6700 shifters won't shift...
  5. The (higher) pressure inside the tire is pushing...

    The (higher) pressure inside the tire is pushing against the valve and thus keeping you from pumping air in.

    Use a toothpick (or something similarly long and thin) to get to the valve thru the...
  6. Thread: Brake noise

    by e_guevara
    Replies
    3
    Views
    182

    Some rim/pad combos need to be broken-in with a...

    Some rim/pad combos need to be broken-in with a few miles of braking before the noise subsides.

    I've had similar experiences with milled braking surfaces and hard brake pad compounds.
  7. Mavic freehubs have been 11-speed compatible for...

    Mavic freehubs have been 11-speed compatible for a long time. As previously noted, just remove all the spacers when using an 11s cassette.

    Maviczack (Zack Vestal) works for Mavic's PR department,...
  8. The 10s 105 FD will work fine with your otherwise...

    The 10s 105 FD will work fine with your otherwise 9s setup.
  9. Replies
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    A lot of people upgrade parts on their bike for...

    A lot of people upgrade parts on their bike for different reasons. It's good that you have a clear idea of what you want from the upgrade.

    If you feel the upgrades would be money well spent then...
  10. Thread: Is this bad?

    by e_guevara
    Replies
    25
    Views
    685

    I will not argue with you on this one, and I do...

    I will not argue with you on this one, and I do agree that modern (new) derailleurs have stronger return springs.

    However, I have had an older bike with an old RD (probably worn) way back then...
  11. Replies
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    Yes they are. The stickers on the originals (SLE,...

    Are those fake cosmic carbones?[/QUOTE]

    Yes they are. The stickers on the originals (SLE, SLS) do not cover the entire depth of the rim. And the spoke count of 16F/20R don't match either.
    ...
  12. Thread: Is this bad?

    by e_guevara
    Replies
    25
    Views
    685

    Aside from the obvious purpose of the RD to shift...

    Aside from the obvious purpose of the RD to shift cogs laterally, it also applies tension on the chain vertically (via the cage return spring) so it wraps around the cogs for proper teeth engagement....
  13. According to the Shimano website and online...

    According to the Shimano website and online distributors, Ultegra and 105 11s cassettes only come in 11-23, 11-25, 12-25, 11-28, 11-32, while Dura Ace has 11-23, 11-25, 11-28, 12-25, 12-28.

    OP did...
  14. Thread: Is this bad?

    by e_guevara
    Replies
    25
    Views
    685

    All the more reason NOT to turn your bike upside...

    All the more reason NOT to turn your bike upside down when doing those.
  15. Replies
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    907

    Welcome to the forums. A few things... ...

    Welcome to the forums.

    A few things...

    Ultegra 6700 series and 6800 series have a few key differences that make them totally different:

    6700 is 10s while 6800 is 11s
    Improved shifting...
  16. Replies
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    907

    Incorrect. 6800 has a redesigned FD with a longer...

    Incorrect. 6800 has a redesigned FD with a longer arm to make front shifting easier (less lever throw).
  17. Thread: Is this bad?

    by e_guevara
    Replies
    25
    Views
    685

    You shouldn't be doing your own wrenching... :)

    You shouldn't be doing your own wrenching... :)
  18. Thread: Is this bad?

    by e_guevara
    Replies
    25
    Views
    685

    Tip: When working with the RD, do not turn the...

    Tip: When working with the RD, do not turn the bike upside down. The RD won't work properly (gravity is going against it).

    As to your chain's length - it looks fine to me (I still think you should...
  19. Replies
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    Pics of the brake in question might help to...

    Pics of the brake in question might help to clarify your issue.
  20. I was referring to the maximum number of cogs...

    I was referring to the maximum number of cogs that you can put on a given freehub width and the distance between each cog. As you put more cogs in, the distance between them becomes smaller

    Given...
  21. Not many available options left when you have to...

    Not many available options left when you have to cram a lot of cogs onto a limited freehub width.
  22. No, they are not interchangeable - given the same...

    No, they are not interchangeable - given the same rear wheel you may have.

    Campy and Shimano freehubs/cassettes have different splines - you can't fit a Shimano cassette on a Campy freehub and...
  23. Either one will work. Do measure your stem's...

    Either one will work.

    Do measure your stem's clamp height against the shim. A little over (longer) is okay. If the shim is longer than the stem it's going to interfere with the top cap above and...
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    Yes, they might rub on the spindle if not secured...

    Yes, they might rub on the spindle if not secured properly.

    Since it's Di2, the electrical cable is soft enough to make tighter bends (AWG20 I think) without any problems.
  25. Replies
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    1,601,645

    The Praxis conversion BB has holes to run...

    The Praxis conversion BB has holes to run internal cabling through.

    https://praxiscycles.com/wp-content/uploads/BB_PF30-ConvBB-01.jpg

    The sleeve is used for PF30 frames (EVO, Super 6). You...
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