New style brompton gear change mechanism help..

Discussion in 'Folding Bikes' started by ukoldschool, 19 Sep 2018.

  1. ukoldschool

    ukoldschool Well-Known Member

    Hi all, has anybody taken apart or have a diagram of the new style gear changer?

    This type:

    Mine is not returning when engaging down into '1', i'm sure its something simple like a spring not seated correctly, but Id rather know what was in there before I take it apart....

    Bodhbh likes this.
  2. Wilder

    Wilder Active Member

    Before taking it apart have you checked that there's just not too much tension in the gear cable preventing it from latching into the 1 position? You can could check this by disconnecting the gear cable from the rear hub in the same way you'd take it off to fix a flat tyre.
    ukoldschool and Dogtrousers like this.
  3. FolderBeholder

    FolderBeholder Well-Known Member

    Mine did exactly the same thing when I maladjusted it too tightly.
    ukoldschool likes this.
  4. OP

    ukoldschool Well-Known Member

    Hi, yes I have checked that. I think the problem has stemmed from the fact that the little chain thingy in the hub was screwed all the way in until it couldn't turn anymore, and it was therefore not at the correct angle for a decent gear change, so when I needed to go down to gear 2 (which is whilst coming up quite a steep hill) it wouldn't change down, and in my 'effort' to get it to change I think i pushed it past its 'stop'... I have now backed the chain thingy off and set it up correctly, and it does change fine it just doesn't return (indicates 3rd and 2nd gears fine, just doesn't seem to work for 1st)
  5. OP

    ukoldschool Well-Known Member

    gizmo1994, FolderBeholder and Wilder like this.
  6. Bill

    Bill Senior Member

    I have one of these. On the good photo supplied you can see the gear change lever. As I fitted bar ends the lever got in the way and changed gear without me knowing!! I sawed off the end of the lever and now have decent room and noral gear changing...I also removed the daft, useless bell and replaced with a 'ding-dong' one.
  7. Bodhbh

    Bodhbh Veteran

    Wish I'd seen that photo earlier. I was deciding between upgrading the old fashioned SA shifter on my 90s model to a thumbshifter or the triggershifter, and the photos I googled of the triggershifter all had it in a stupid position pointing up from the bars like the old SA thought bugger that. That looks quite tidy.
  8. OP

    ukoldschool Well-Known Member

    it is really tidy and so far (now adjusted correctly) works great!
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