Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Dahon Eco3 BottomBracket upgrade? Which BB?

    Hi there!
    It's my first post at Folding Bikes section.
    Recently, I bought this Dahon Eco3.

    The problem is that its bottom bracket and crankset seem too fragile! I want to put a new crank and BB on it. But what kind of BB is this one that comes with Eco3?
    Can I replace it by any other BB?
    Can I use any BB from this list on my bike?
    http://www.chainreactioncycles.com/C...rtBy=SalesRank

    Thanks!

  2. #2
    Senior Member
    Join Date
    May 2004
    Location
    Pacific Northwest
    My Bikes
    Too many....................
    Posts
    3,064
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    According to the Dahon website the crank is cold forged and that should be pretty tough.
    Dahon Jifo
    Dawes Kingpin 2speed

  3. #3
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dynocoaster View Post
    According to the Dahon website the crank is cold forged and that should be pretty tough.

    Yeah, that's true. Actually, the crankset is OK for me. The problem is the BB.
    I believe it's a cup-and-cone BB. Can I replace it by a SealedCartridge BB?

  4. #4
    Senior Member
    Join Date
    May 2004
    Location
    Pacific Northwest
    My Bikes
    Too many....................
    Posts
    3,064
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would get hold of Thor at www.thorusa.com and ask him what is available.
    Dahon Jifo
    Dawes Kingpin 2speed

  5. #5
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dynocoaster View Post
    I would get hold of Thor at www.thorusa.com and ask him what is available.
    Just did this right now.
    Thank you!

  6. #6
    New usename ThorUSA brakemeister's Avatar
    Join Date
    Nov 2004
    Location
    Southern Illinois USA
    Posts
    2,469
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    you can use any bottom bracket for square axle .... cup and cone is sometimes not so bad though ..:-) ( old school )

    thor

  7. #7
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by brakemeister View Post
    you can use any bottom bracket for square axle .... cup and cone is sometimes not so bad though ..:-) ( old school )

    thor
    Wow, just saw your email right now! Hehe!
    OK then, thank you very much.
    I'm gonna replace it only when problems appear.
    Another question, what are the measures of the Eco3/EcoD7 BB?

    Thanks!

  8. #8
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,245
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    for that cheap stock crank, same one I removed, 122mm.
    If nothing changed, that is.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  9. #9
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by AEO View Post
    for that cheap stock crank, same one I removed, 122mm.
    If nothing changed, that is.
    Thank you!
    What if I want a new crank? The measures of the BB change?
    Do you have a pic of your bike with new BB and Crank?

    Thanks!

  10. #10
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,245
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    a different crank will require different length almost every time.

    I think I used a 117.5mm BB to set the ultegra/600 cranks out far enough so I could use the clamp on FD thor sells.
    normally, you use ultegra/600 cranks with a 110 or 113mm BB.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  11. #11
    Junior Member
    Join Date
    May 2010
    Location
    Brasília, DF, Brazil
    My Bikes
    1992 Trek 800, 2008 Kona Fire Mountain
    Posts
    19
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks sir!

Posting Permissions

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