Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Newbie
    Join Date
    Oct 2011
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Help on dating my new (old) Schwinn Twinn Tandem

    I found the number stamped on the left dropout, but then noticed this number did not correspond with any of those i found posted on another thread of all chicago schwinns. it is from the chicago plant, as the original decal on rear seat post shows, but the serial number seems to be #OC50005. i found that #CO50005 was made in 1960 (3/31), but i could not find any which started with an "O" . . . puzzled. any help would be appreciated.

    by the way, it's royal (or sapphire) blue and a beauty, w/original everything, it appears. diggin' the big 26" whitewalls!

  2. #2
    Decrepit Member Scooper's Avatar
    Join Date
    Aug 2005
    Location
    San Francisco California
    My Bikes
    2007 Waterford 953 RS-22
    Posts
    8,629
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You are correct that it is unlikely the first character, which represents the month the frame was made, is an "O"...

    Is it possible the first character could be "C" (March), "D" (April), or "G" (July)?

    The second character, C, indicates 1967 as the year the frame was made.

    Here's the catalog page for the 1967 Twinn. The color is "Sky Blue"...

    http://www.trfindley.com/flschwinn_1...0/1967_05.html

    - Stan

  3. #3
    Newbie
    Join Date
    Oct 2011
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Thanks Scooper

    appreciate the help, Scooper. one thing is though, is that part of that first letter is obscured by the weld (partially hidden beneath) at the joint. but the part that is partially covered is the left side of what looks sure to be an "O". if it was a "C" or "G", the part i can see (right side of letter) would be open/have a break in the circle (as w/the C or G) but it's a closed circle. is what i'm saying making sense?

    i'll try to take a picture and post here to show what i'm seeing. but from the catalog pic you linked to, that sky blue tandem looks exactly like mine.

  4. #4
    Decrepit Member Scooper's Avatar
    Join Date
    Aug 2005
    Location
    San Francisco California
    My Bikes
    2007 Waterford 953 RS-22
    Posts
    8,629
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If the left side of the letter is obscured, could it be a "D"?
    - Stan

  5. #5
    Newbie
    Join Date
    Oct 2011
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Scooper View Post
    If the left side of the letter is obscured, could it be a "D"?
    suppose it could be. will look closer, but can see enough of the letter to feel pretty sure it's not. again, Scoop, i'll try to take a pic to show. . . thx.

Posting Permissions

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