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Brompton crank snapped

Discussion in 'Folding Bikes' started by Pseudo, 31 Oct 2015.

  1. Pseudo

    Pseudo Active Member

    About to pull away from the traffic lights and... snap!


    Anyone else had this happen?
  2. shouldbeinbed

    shouldbeinbed Rollin' along

    Manchester way
    No, wow, manufacturing defect? or would we not like you when you are angry?
  3. alicat

    alicat Guru

    Good job they have a low top tube.
  4. Pseudo

    Pseudo Active Member

    Well, most of the break is clean, but part of the crack is dirty, so looks like it may have been developing over time. Just the sudden stress of thrusting my foot down was obviously too much for it! Although the shop looked impressed, they did say it wasn't the first one they've seen!
    Illaveago and shouldbeinbed like this.
  5. annedonnelly

    annedonnelly Girl from the North Country

    How old's the bike? Has it done a lot of miles?
  6. Pseudo

    Pseudo Active Member

    Two years - done over 6,000 miles - lots of hills where I live too, so gets a lot of pounding.
  7. Pseudo

    Pseudo Active Member

    I'm also on my third rear wheel rim, fourth rear tyre too.
  8. jefmcg

    jefmcg Apparently I shouldn't use the default, "guru"

    You are strong. Like bull.

    Here's your next challenge.

    Pseudo likes this.
  9. Pseudo

    Pseudo Active Member

    Ouch! I do find I'm checking everything on it lately - but something unexpected will always evade detection until it fails! The bolt securing the rear brakes to the frame came loose a few weeks ago - the only warning I had was the brake lever juddering when I applied the brake.
  10. chris folder

    chris folder Active Member

    Hi I am a new bromptom owner your scaring me with pictures like this:laugh: I will be checking my bromptom all the time now. I have been rideing dahon for years still good as new
  11. Pseudo

    Pseudo Active Member

    I think a Brompton is designed for 2-3 miles to and from a station every day, rather than the 17 miles pounding I give it on an uphill slog home from London every day in all weathers!
  12. jefmcg

    jefmcg Apparently I shouldn't use the default, "guru"

    People do a lot more than that on a Brompton. I've seen one on a 600km audax (600km in 40 hours) and I believe there are always several on Paris-Brest-Paris (1200km in 80-90 hours)
  13. shouldbeinbed

    shouldbeinbed Rollin' along

    Manchester way
    My front brake assembly fell to pieces not long after buying it. A proper strip down and rebuild at home & its been fine ever since. I do minimum 15 edge of the Pennines miles a day on mine in all but proper snowy weather & I even spotted Rose Bikes (IIRC) offering 16 inch snow tyres but I think the ground clearance would be a problem picking up the grinding paste gritter spray and snow sludge so readily.

    On the few niggles people report: I do wonder if Brommy are working at full tilt to grow and meet the demand over the last few years and that final touch of QC has slipped a tad, but shops are taking them on bombproof reputation & trust. A quick bit of home TLC seems to be the thing to keep them as good as public preception.
    Illaveago likes this.
  14. Pale Rider

    Pale Rider Veteran

    My Brompton dealer tells me Brommies usually come out of the box ready to go and few require much adjustment.

    But I think you could be right about Brompton taking their eye off the quality control ball.

    These days they seem more concerned with style, boutique shops and marketing in general.

    Ramping up production of any niche product often seems accompanied by a dip in quality, so if there is a problem, Brompton should have seen it coming.
    Illaveago likes this.
  15. ABikeCam

    ABikeCam Considering a username change

    That's what happened to my first M3L. I had removed the seatpost and noticed the break from the inside at exactly the same place.