Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Junior Member
    Join Date
    Mar 2009
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Fork Strength for Drum Brake

    Hi,

    I have a question for a frame builder familiar with strength requirements for a fork to run a drum brake.

    I'm restoring a vintage ladies step through frame circa 1940s - long frame with 28x1 3/8 wheels. Originally the bike was only set up with a coaster brake - the front fork is not drilled.

    The bike is for my girlfriend and while she prominently uses the coaster brake to stop she'd like the extra security of a front brake. I don't want to drill the fork for a calliper brake. I'd rather use a drum brake.

    The brake I'm considering is a Sturmey Archer X-FD

    The frame is steel, rather heavy but I'm not sure of the tubing - it's a Malvern 2 Star for those familiar with their bikes (Australian Brand). The overall condition is excellent.

    I have seen bikes of a similar era which ran a front drum brake and have seen similar style bikes from Pashley, Gazelle and Kronan - though I realise the later are purpose built with the arm support built into the fork.

    I guess my question is - were frames back in the day built using heavy steel which can handle the stress of a drum brake or were specially made to use them?

    I can imagine the stress could be quite high on a touring or tandem bike down hills but the set up I'm putting together will be for mostly flat, inner city riding where the brake is supplementary to the coaster brake. I just want to make sure it's not going to destroy the fork or worse put my girlfriend in harms way if the fork seizes.

    Any advice appreciated.
    Thanks

  2. #2
    Old fart JohnDThompson's Avatar
    Join Date
    Nov 2004
    Location
    Appleton WI
    My Bikes
    Several, mostly not name brands.
    Posts
    12,247
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    I run a front drum brake (Maillard) on an old Italian race frame designed for calipers. No problems in over 20 years of service as my main commuter bike.

Posting Permissions

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