Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7

Thread: Tubing Removal

  1. #1
    Junior Member
    Join Date
    Jun 2007
    Posts
    7
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Tubing Removal

    I recently decided that I needed a recumbent to make my life complete. Then I looked at my checkbook. I have found several good site on building your own. Signed up for a welding class at my local Jr. College. Both of my donor bikes have lugged frames. Can I remove the tubing from the lugs? I want to do this because one piece of tubing will look neater and more professional than splicing the tubes as in most of the sites I have looked at.

  2. #2
    Senior Member
    Join Date
    Sep 2006
    Location
    Bozeman MT
    My Bikes
    Kirk
    Posts
    189
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you can afford it your life will be made much , much easier by using new tubes. Here's a good place to buy aircraft tube and you can get it in any length you need............splicing not good.

    Dave

    http://www.aircraftspruce.com/catalo...tubing_un1.php

  3. #3
    Senior Member
    Join Date
    Apr 2007
    Location
    Chili, NY
    My Bikes
    88 Fisher Gemini tandem, 92 Trek 970, 07 Nashbar Frame, 08 Gary Fisher Paragon
    Posts
    734
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Any Ideas on which Recumbent you want to make?

    Chris
    A Mess of old bikes...
    92 Trek 970
    08 Gary Fisher Paragon

  4. #4
    Junior Member
    Join Date
    Jun 2007
    Posts
    7
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ang1sgt
    Any Ideas on which Recumbent you want to make?

    Chris
    I started out looking to build the Easy Tour clone - then I acquired A Centurian Mixte with 24' wheels. If I cut, extend and graft in a bottom bracket from an old Royce Union. minimum cutting and welding. That is why I want to pull the old tubing out of the lugs if I can.

  5. #5
    Senior Member PaPa's Avatar
    Join Date
    May 2003
    Location
    Idaho
    Posts
    494
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Not a task for the faint hearted or inexperienced. It can be done, but only if the frame is silver brazed - and even then, it's far too easy to spoil the frame. If you choose to try it, then cut the tube near the lug and grind-out the remaining tube with cutters or stone wheels.

    Quote Originally Posted by LeakyDuck
    I want to do this because one piece of tubing will look neater and more professional than splicing the tubes as in most of the sites I have looked at.
    Don't thumb your nose at spliced joints. If done right, they are strong, relatively easy to do and invisible. Both tubes should be the same wall thickness and the sleeve should be thinwall chromoly (.028"-.035"). The image below shows 1-1/4" diameter tubing, and 1-1/4" diameter sleeve which has been slit about 1/4" wide to permit telescopiing into the tubes. During assembly, make sure you orientate the sleeve's slit, approximately 90 degrees from the filler access holes. Once assembled, feed Harris Safety-Silv 56, 45 or 45T into the holes. An adaquate length of straight, 1" angle iron and a couple of hose clamps can be used as a jig while you tack the pieces together.
    Attached Images Attached Images
    Last edited by PaPa; 06-20-07 at 04:52 PM.

  6. #6
    ex frame builder
    Join Date
    Aug 2004
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I wrote an article on frame repair here. It included removing tubes.
    History, photos and tech articles on my website. Also check "Dave's Bike Blog."

  7. #7
    Senior Member
    Join Date
    Apr 2007
    Location
    Chili, NY
    My Bikes
    88 Fisher Gemini tandem, 92 Trek 970, 07 Nashbar Frame, 08 Gary Fisher Paragon
    Posts
    734
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    LeakyDuck...I've seen a few of those and they build up nice. You may want to search around for some of the Bent Groups and see what they have to say. Bentrideronline.com is a good one as well as http://www.recumbents.com/. Both have good resources and links to many folks that have built up frames.

    Good Luck!

    Chris
    A Mess of old bikes...
    92 Trek 970
    08 Gary Fisher Paragon

Posting Permissions

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