Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Aging Gearhead
    Join Date
    May 2005
    Location
    Baja Georgia
    Posts
    73
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Dahon Seatpost Mod - I-beam to standard mount

    I never really had any dislike for the SDG saddle on my 2005 Dahon Speed P8 - until I bought a Brooks B17 saddle for my non-folding tourer. After experiencing the benefits of a truly comfortable saddle, I knew I had to find a way of getting the Brooks (a tradional two-railed saddle) onto the Dahon. I also didn't want to buy a new oddly-sized seatpost. What I did was really quite simple and not at all clever; if it's been mentioned here before: I apologize.

    I removed the SDG saddle and flipped the seatpost over so that the SDG mount is now down by the crank. This left the open end of the seatpost on top. Using a dremel (a hacksaw/sabresaw/etc., would work, too) I cut a 1/8th inch wide by 1 1/2 inch long notch, similar to what you see on some seattubes/frames. With a 34 mm seatpost clamp, the SDG post is now ready to accept the new standard XX.Xmm seatpost. (Sorry: I don't recall the exact diameter as I sit here at work but I think it's 27.2 mm) Now I have the option of using either my Brooks or the SDG.

    Disclaimers: I haven't logged a tremendous number of miles but it appears to no less secure than a typical frame clamp setup and more secure than any telescopic post I've seen. Is the SDG seatpost warranted? I don't know but if it was, it's not anymore.

    I'll track down the SDG seatpost's inner diameter measurement ASAP. Maybe some pix, too.
    Last edited by toodman; 07-10-08 at 12:34 PM.

  2. #2
    Member
    Join Date
    May 2005
    Location
    Gijon, Spain
    My Bikes
    2003 Kona Smoke, 2004 Fuji Touring, 2005 Brompton L3, 2008 Dahon MU XL Sport
    Posts
    41
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by toodman View Post
    I'll track down the SDG seatpost's inner diameter measurement ASAP. Maybe some pix, too.
    Toodman, great tip, thanks for posting it. I am interested in doing the same thing on my MU XL, I'd appreciate seeing some photos when you get the chance. Also, details of the dimensions of the clamp and seatpost you used to mount the Brooks.
    Thanks, Fergus

  3. #3
    Small wheels ARE better! OldiesONfoldies's Avatar
    Join Date
    Sep 2006
    Posts
    362
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A cheaper way is to buy off trade-in 2 railed seat post from those Dahon owners who are upgrading to Carbon post. These are folks who love upgrading their bikes (called zhnging here). I got one for about US$15. Your LBS may have some of these just sitting around...

    And yes, I'm a B17 fan too. Love it on my Speed 8.


Posting Permissions

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