Spaceliner Seat Post

Discussion in 'BIKE TALK' started by threespeedmafia, May 15, 2018.

  1. threespeedmafia

    threespeedmafia

    Joined:
    Aug 14, 2017
    Messages:
    18
    Ok, so am I correct that the seatpost on my Spaceliner is 3/4"? If so, what is a modern replacement? I would maybe like a set back seatpost but none of the seatposts, all in mm, seem to be equivalent. Any help? Ideas? The top of the current post is very narrow and needs a very small clamp, and the old clamp won't fit more modern saddles.

    Thanks in advance.
     

    Attached Files:

  2. Dizzle Problems

    Dizzle Problems

    Joined:
    May 10, 2016
    Messages:
    718
    I believe the size is 13/16. (20.7 mm). Wald makes replacement ones in good lengths, but I’ve seemed to bend them all.
    Santa Barbara cruisers makes a layback in the size you need
     
    RustyGold likes this.
  3. Duchess

    Duchess

    Joined:
    Jun 13, 2015
    Messages:
    599
    Location:
    US occupied MA
    Yup, 13/16". I got one of those cheap Walds and because the frame is so small, I got one that was really long. To keep it from bending, I inserted a solid aluminum rod into it. Then the regular seat tube clamp hardware was too wussy to handle the torque required to hold the seat post in place (I think inserting the solid rod prevented the seat post from deforming at the torque capacity of the stock hardware), so I upgraded to grade 8 and that worked.
     
    RustyGold and Dizzle Problems like this.
  4. threespeedmafia

    threespeedmafia

    Joined:
    Aug 14, 2017
    Messages:
    18
    Thanks, guys! I had run to my LBS (which unfortunately is really a Trek dealer where you get "service" if you are buying a new Trek) and the young guy supposedly took my post to the back to measure it for me. Even though he never smiled or looked vaguely interested, I trusted he had measured it but I guess not since he told me 3/4.
     

Share This Page