Road Cycling · Public discussion

Shimano 7 speed hub?

Started by Dave · · Last activity · 11 posts · 484 views

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Road Cycling
Published
1 October 2004
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4 October 2004
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Dave
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  1. I recently purchased a bike that is supposed to have 7 gear ratios, The
    shifter shows 7 but I am only able to shift into 5. Do I have a 5 gear hub?
    Or am I missing something? I am new at this game.

    Any ideas?

    Thanks

    D. Haas

  2. Fri, 01 Oct 2004 00:32:21 GMT,
    <[email hidden]>,

    Dave said:

    I recently purchased a bike that is supposed to have 7 gear ratios, The
    shifter shows 7 but I am only able to shift into 5. Do I have a 5 gear hub?
    Or am I missing something? I am new at this game.

    Any ideas?

    Make sure you have it adjusted correctly
    http://sheldonbrown.com/nexus-mech.html
    --
    zk

  3. 1) Count the number of sprockets...7 sprockets is indeed a 7 speed hub...

    2) Adjustment is key. Insufficient tension on the cable will leave you
    unable to reach the larger sprockets as your shift lever will run out of
    travel before the derailleur runs out of gears. Also, there are a set of
    "stops" on the derailleur that determine how far it can travel up/down (used
    to prevent the derailleur from throwing the chain off the sprokets). Your
    LBS can help you out...

  4. Brian said:

    1) Count the number of sprockets...7 sprockets is indeed a 7 speed hub...

    2) Adjustment is key. Insufficient tension on the cable will leave you
    unable to reach the larger sprockets as your shift lever will run out of
    travel before the derailleur runs out of gears. Also, there are a set of
    "stops" on the derailleur that determine how far it can travel up/down
    (used
    to prevent the derailleur from throwing the chain off the sprokets).
    Your
    LBS can help you out...


    Clarify, are we talking internal gear hub or cassette?
    Bill Baka

    --
    Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

  5. Dave said:

    I recently purchased a bike that is supposed to have 7 gear ratios, The
    shifter shows 7 but I am only able to shift into 5. Do I have a 5 gear
    hub? Or am I missing something? I am new at this game.

    Any ideas?

    Thanks

    D. Haas

    make sure it's adjusted properly for cable tension. It's dead easy with
    the Nexus hubs. Shift into "4" (or the number with a different color or
    circle around it, it may have changed, but I doubt it), then adjust the
    barrel adjuster for the cable until the two tiny red dots on the hub by
    the cable attachment line up.

    That's it and hopefully will solve your problem. If the bike is indeed
    new, cable stretch is normal as everything breaks in.

    As I've posted many many times before, I've ridden tens of thousands of
    miles on a Shimano 7sp hub with zero issues. Hopefully you'll have the
    same wonderful experience.

    hope this helps.

    😄

  6. Bill Baka said:

    Clarify, are we talking internal gear hub or cassette? Bill Baka

    the subject line seemed pretty clear to me...

    😉 :P

  7. Thanks you all for the great advise. I will get on it.

    D. Haas

  8. Thanks you all for the great advise. I will get on it.

    D. Haas

  9. Well, I feel like a total Fred...

    of COURSE a nexus hub ain't a cassette...geez

    In my defense, I've never used a multispeed hub setup before...must have a
    go-round to Sheldon's site and look up the particulars...

    Thanks to those of you who DO know about 'em...

  10. Brian said:

    Well, I feel like a total Fred...

    of COURSE a nexus hub ain't a cassette...geez

    [counts the number of sprockets]

    Let's see here...one.....

    [looks on other side of axel]

    nope not there...hmmm.

    😄 😄

  11. Sun, 3 Oct 2004 14:54:05 -0700, <[email hidden]>,

    Brian said:

    Well, I feel like a total Fred...

    of COURSE a nexus hub ain't a cassette...geez

    Well, a fred wouldn't necessarily care if it was a Nexus as long as it
    worked. Though a fred might well run an internal gear hub. Ultra freds
    might run both. A derailleur and eight speed cassette mounted an
    internally geared 3-spd hub. With a front derailleur on a triple
    chainwheel, you'd have 72 gears to twiddle.

    The original poster didn't say it was a Nexus hub. We guessed.
    Shimano 7 speed could have just as easily meant an old freehub.

    The context of the post suggested a new internal setup. Being limited
    to five of seven gear ratios would be a derailleur adjustment problem,
    not a hub problem, per se.
    --
    zk

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