Advertise on Bikeforums.net



User Tag List

Results 1 to 15 of 15
  1. #1
    Senior Member
    Join Date
    Jul 2008
    My Bikes
    Brompton, Dahon Vitesse D5
    Posts
    1,782
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Brompton 2012 folding pedal redesign

    I've just stumbled upon a couple of pics which indicate that Brompton have redesigned the folding pedal:



    http://www.brompton.co.uk/uploads/L1113529.jpg

    Looks like another step towards the more organic, curved lines of CAD designed parts. Hopefully it'll weigh a little less with some areas cut away, plus the bolt appears to be an allen key fitting on the standard model.
    I can't see any evidence that the bearing is replaceable, however.

  2. #2
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,674
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Sure its a replaceable bearing, they didn't pour hot aluminum around it,
    the bearing is pressed in, you just have to make an arbor press ,
    and a few jigs to press it out again ..
    A straight forward shop practice.
    Or, just buy this part :
    http://www.sjscycles.co.uk/brompton-...rga-prod13734/
    the allen key fixing brought out in steel in the same way they did
    in the Ti Version is a good thing..

    Ground down the edge of a 24mm socket, so I'm OK with my old gear.

    wont need to fit Spud Pedals in the field.
    Last edited by fietsbob; 05-28-12 at 01:38 PM.

  3. #3
    Junior Member
    Join Date
    Apr 2006
    Posts
    15
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    1 "flaw" i found on using the brompton folding pedals is if first fold the pedals and then fold the bike, the pedals can hit the chainstay and damage the paint.

    I mistakely did this and wondered why i could not get it to fold.

    brompton should design a stop to prevent the pedal from folding back too far as to prevent paint damage from the pedal hitting the frame when bike and pedal fully folded.

  4. #4
    jur
    jur is offline
    Senior Member
    Join Date
    May 2005
    Posts
    5,977
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    On the current Bromptons, there is a bump on the left crank arm which prevents the pedal from folding too far.

  5. #5
    Avid 2 wheeled commuter
    Join Date
    May 2012
    Location
    Cambridge, MA
    My Bikes
    Brompton
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jur View Post
    On the current Bromptons, there is a bump on the left crank arm which prevents the pedal from folding too far.
    What happened to Toango happened to me, which led me to several misguided attempts to DIY paint my own bike; culminating in me paying a someone to re-powder paint my bike at a not-cheap price.

    So, if I want to idiot-proof this from happening again (besides selling the bike, lol), do I replace the crank arm only, pedal only, or both?

  6. #6
    Senior Member
    Join Date
    Dec 2005
    Location
    Auld Blighty
    My Bikes
    Early Cannondale tandem, '99 S&S Frezoni Audax, '65 Moulton Stowaway, '52 Claud Butler, TSR30, Brompton
    Posts
    2,150
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just the LH crank.

  7. #7
    Avid 2 wheeled commuter
    Join Date
    May 2012
    Location
    Cambridge, MA
    My Bikes
    Brompton
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks, LWaB.. now all I got to do is hunt down a 24mm socket wrench

  8. #8
    Banned. folder fanatic's Avatar
    Join Date
    May 2005
    Location
    Anti Social Media-Land
    Posts
    3,076
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    How about a bit more simple fix rather than buying a whole new LH crank. I use a old clean preferably thick sock to protect both my own older Brompton's chainstay paint, slipping it on when I fold the pedal up. Try it. It works well especially if you are shipping the bike somewhere. Using socks as cushions is not just for Bromptons. The old sock idea works well even with other collapsed bikes.
    Last edited by folder fanatic; 05-27-12 at 10:21 PM.

  9. #9
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,674
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    someone stuck a rubber bumper on the crank arm ,
    stick on cabinet/box feet come from your local hadware store.

    some pictures on Yahoo Brompton group site.

    no bump on my Schlumpf crankarms..
    seem to be, careful folding does not make paint chips.

    tape and old inner tube, over potential hits,
    is always able to be done..
    Last edited by fietsbob; 05-28-12 at 12:02 PM.

  10. #10
    Senior Member
    Join Date
    Jul 2008
    My Bikes
    Brompton, Dahon Vitesse D5
    Posts
    1,782
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I've got the old cranks without protruding stop thingy and have just switched to some Ultegra cranks anyway. I don't seem to have this problem; it only happens if you fold in the wrong order, and most of my frame is covered in helicopter tape so it wouldn't scratch if it were to happen.

  11. #11
    Senior Member alhedges's Avatar
    Join Date
    Mar 2008
    Location
    Naptown
    My Bikes
    NWT 24sp DD; Brompton M6R
    Posts
    1,106
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by chagzuki View Post
    I've got the old cranks without protruding stop thingy and have just switched to some Ultegra cranks anyway. I don't seem to have this problem; it only happens if you fold in the wrong order, and most of my frame is covered in helicopter tape so it wouldn't scratch if it were to happen.
    Yeah, it only happens if you fold the pedal before swinging the rear triangle under, while the folding pedal is in the 3:00 to 9:00 position.

    Re: OP - is that pedal different from the 2011 pedal? It looks about the same to me.

  12. #12
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,674
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    To my eye,
    http://www.sjscycles.co.uk/brompton-...pedf-prod2922/
    reflector different, machined off a couple grams of aluminum,
    from the square face Fore and Aft. vs 2011, the square one:
    http://www.bikeforums.net/showthread...7#post14281737

    and plastic center latch panel mech slightly different.

    new pedal core plug appears to be broached straight thru.
    so hex hole is straight thru it.
    http://www.sjscycles.co.uk/brompton-...olt-prod13730/
    Last edited by fietsbob; 05-28-12 at 01:34 PM.

  13. #13
    Senior Member badrad's Avatar
    Join Date
    Jan 2010
    Posts
    330
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by folder fanatic View Post
    How about a bit more simple fix rather than buying a whole new LH crank. I use a old clean preferably thick sock to protect both my own older Brompton's chainstay paint, slipping it on when I fold the pedal up. Try it. It works well especially if you are shipping the bike somewhere. Using socks as cushions is not just for Bromptons. The old sock idea works well even with other collapsed bikes.
    +1! protects so many different parts, and there's often endless supply of orphaned socks around the house!

  14. #14
    Senior Member
    Join Date
    Jul 2008
    My Bikes
    Brompton, Dahon Vitesse D5
    Posts
    1,782
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I was told by Brompton the new pedal is broader and reinforced, so slightly heavier. The allen socket bolt and washer are lighter so overall weight remains around the same. Weight weenies can stick with the old pedal but buy the new bolt.

  15. #15
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,674
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Real weight weenies use non folding pedals , with More Titanium.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •