Alien seat post!

slagnman
slagnman Posts: 6
edited January 2011 in Workshop
I just got a new bike for free! But it's missing the seat and seat post!

The problem is there is no place to tighten the seat post if I had one, I went to a local bike shop and I was told I need a seat post that has the tightening mechanism build into it, some kind of piece at the end that slides over when you tighten, but I am told they don't make them anymore so I will need to search online or just keep digging at part salvages.

The problem is I have no idea what I am looking for, since they're not made anymore all the parts that come up are normal bike posts which won't work.

Does anybody know the name of these damn posts? Or better yet where I could get one?

I'd really appreciate some direction, thanks.

ben.

Comments

  • Pirahna
    Pirahna Posts: 1,315
    What bike is it?
  • it's a "guaranteed world finest bicycle precision mechanism", japanese.
  • Monty Dog
    Monty Dog Posts: 20,614
    Hard to say without a picture - are you sure you don't need an external seat tube collar? Even if its a plain tube, you could just cut a slot in the back of the seattube and fit one anyway.
    Make mine an Italian, with Campagnolo on the side..
  • Right which was my first idea, but the cross bar and back wheel frame comes right up to the top of it so there's no room to cut, really thick frame as well.

    The guy at the shop seemed pretty sure of the type of post that I needed, but I didn't get a name for it, he just explained the type of post it was and said they didn't make them anymore and they're hard to find so to look online.
  • slagnman wrote:
    I just got a new bike for free! But it's missing the seat and seat post!

    The problem is there is no place to tighten the seat post if I had one, I went to a local bike shop and I was told I need a seat post that has the tightening mechanism build into it, some kind of piece at the end that slides over when you tighten, but I am told they don't make them anymore so I will need to search online or just keep digging at part salvages.

    The problem is I have no idea what I am looking for, since they're not made anymore all the parts that come up are normal bike posts which won't work.

    Does anybody know the name of these damn posts? Or better yet where I could get one?

    I'd really appreciate some direction, thanks.

    ben.

    I KNOW YOUR PAIN! I ALSO just got the SAME MODEL OF BIKE at a local bikeswap, but the seatpost tube is all messed up and won't hold a tight fit on a seatclamp.


    LET ME HELP YOU OUT BRO! Here's what I've learned so far today:

    The part you are looking for looks like this:

    4559307618_08fc00df57_b.jpg

    1) The bike is some pre1970s vintage of Bridgestone, made in Tokyo.

    2) The seat post type you're looking for is called a "quill seatpost." BUT WAIT!

    3) Nobody makes quill seat posts. Thank God my neighbor is a machinist. I'm going to be fabricating one from scratch.
  • Ben6899
    Ben6899 Posts: 9,686
    aka "internally clamping seatpost"... it's worth a try in the classified section to see if anyone has such a thing knocking about the garage.
    Ben

    Bikes: Donhou DSS4 Custom | Condor Italia RC | Gios Megalite | Dolan Preffisio | Giant Bowery '76
    Instagram: https://www.instagram.com/ben_h_ppcc/
    Flickr: https://www.flickr.com/photos/143173475@N05/
  • keef66
    keef66 Posts: 13,123
    Just put a chunky jubilee clip round a normal seatpost. It will stop it slipping down into the frame.

    Trouble is, the post needs to be a fairly snug fit otherwise the saddle will swivel sideways. And it's always prone to theft.
  • I used to have one of these in a mid-80s Peugeot Routier 501 frame (it's basically an expander bolt, I suppose). I think mine got thrown away when the frame was in a road accident unfortunately, otherwise could see if it was same size.

    I found mine tended to get frozen because it was so fiddly to remove the post from the frame, so I would recommend plenty of grease on the surfaces & bolt, etc.
  • OK...I think I finally have a real answer to this question...

    I am in the process of updating a (circa 1972) Bridgestone 10 speed and have the same problem with the old quill style seatpost. Bottom line, the seatpost was siezed inside the seat tube and was rendered unusable when I attempted to remove it.

    Like numerous other, I have since been searching for a replacement seatpost, or at least a viable replacement. Simply put, quill seatpost are no longer made....

    But there is good news....today I found this website... http://www.yellowjersey.org/yampost.html It looks like these folks make custom quill seatposts for a reasonable cost.... I emailed earlier this evening and was quoted $95. Not cheep, but it is a viable option. I will let everyone know how it works out.
  • MAX_LT
    MAX_LT Posts: 5
    How's the progress on your Bridgestone? Photos?

    I have a 70s Bridgestone that I have recently converted to Single Speed. I haven't been able to find very much info on it. I have the same seatpost problem.

    http://www.pinkbike.com/photo/5334268/
    p4pb5334268.jpg
    http://www.pinkbike.com/photo/5975219/
    p4pb5975219.jpg
    http://www.pinkbike.com/photo/5334278/
    p4pb5334278.jpg
  • Bikehawk
    Bikehawk Posts: 102
    Look at the picture above from Punk Patriot I'd say any good machine shop would be able to make you one fairly cheaply.