Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Senior Member IbisTouche's Avatar
    Join Date
    Jun 2009
    Location
    Helsingør
    My Bikes
    1 Speedster & 2 Ibis Touche, 2 Thorn Raven Tour, 2 Thorn Audax mk III, Pedersen, Koga Roadchamp, Centurion Super Le Mans, GT Karakoram Elite, Motobecane Trainer, Mtobecane Inter tandem and 9 cycles (singlecoaster, 2 - 3 gear Torpedo)
    Posts
    70
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Tandem fork vs cyclecross fork? Any real difference?

    We have just got new headset on one of the old Ibis Touche we have. We now realize that the stem is 2 mm too short...
    We need a new fork somewhat longer.
    Would there be any real difference between a tandem fork (ex comotion primevar) and a cyclecross fork? Would the cyclecross fork be too soft for us?

  2. #2
    hors category TandemGeek's Avatar
    Join Date
    Jan 2002
    Posts
    7,151
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    Always best to contact the fork manufacturer's tech support folks to get the design limits perspective... which sometimes requires a phone call vs. Email to get a truly candid assessment, i.e., yeah, under what the legal department says so here's the real question... off the record, will this fork support a bike with a long wheelbase carrying 350lbs of rider weight.

    That said, there are quite a few CX forks that have been marketed for use on tandems with or without some minor tweaks, e.g., Windwood's CX fork and the True Temper Alpha Q CX for Burley. Again, it varies from manufacturer to manufacturer.

  3. #3
    Live Everyday
    Join Date
    Sep 2007
    Location
    Tehachapi Mtns, Calif.
    My Bikes
    '10 C'Dale Tandem RT2. '07 Trek Tandem T2000, '10 Epic Marathon MTB, '12 Rocky Mountain Element 950 MTB, '95 C'dale R900, "04 Giant DS 2 '07 Kona Jake the Snake, '95 Nishiki Backroads
    Posts
    737
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What size is it...1 inch...1 1/8 ...??

    Bill J.

  4. #4
    Senior Member IbisTouche's Avatar
    Join Date
    Jun 2009
    Location
    Helsingør
    My Bikes
    1 Speedster & 2 Ibis Touche, 2 Thorn Raven Tour, 2 Thorn Audax mk III, Pedersen, Koga Roadchamp, Centurion Super Le Mans, GT Karakoram Elite, Motobecane Trainer, Mtobecane Inter tandem and 9 cycles (singlecoaster, 2 - 3 gear Torpedo)
    Posts
    70
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the answer. We will find out about the cx fork we have been offered by the LBS in Copenhagen. He said the fork on the Ibis Touche seemed to be an ordinary racing bike fork. It is too soft after our opinion (well - the whole bike is...), but we don´t know if the cx fork will be any stiffer. Best would be that it would handle well over long distances.

  5. #5
    Senior Member IbisTouche's Avatar
    Join Date
    Jun 2009
    Location
    Helsingør
    My Bikes
    1 Speedster & 2 Ibis Touche, 2 Thorn Raven Tour, 2 Thorn Audax mk III, Pedersen, Koga Roadchamp, Centurion Super Le Mans, GT Karakoram Elite, Motobecane Trainer, Mtobecane Inter tandem and 9 cycles (singlecoaster, 2 - 3 gear Torpedo)
    Posts
    70
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Size is 1 1/8.

  6. #6
    Senior Member wheelspeed's Avatar
    Join Date
    Jul 2008
    Location
    Pittsburgh
    My Bikes
    2004 Trek T2000
    Posts
    260
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would think that the top of the fork tube could be 2mm below the top of the stem and still be okay to use. You just use the topcap without any spacers. (Maybe I'm misunderstanding your original post.)

  7. #7
    Senior Member
    Join Date
    Sep 2010
    Location
    Florida
    My Bikes
    not enough
    Posts
    111
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by IbisTouche View Post
    We have just got new headset on one of the old Ibis Touche we have. We now realize that the stem is 2 mm too short...
    We need a new fork somewhat longer.
    Would there be any real difference between a tandem fork (ex comotion primevar) and a cyclecross fork? Would the cyclecross fork be too soft for us?
    Are you using road brakes, or cross brakes? That may also be something to consider.

    I'm not familiar with "comotion primevar" forks. So, this may be a mute point. Just an observation.

  8. #8
    Senior Member IbisTouche's Avatar
    Join Date
    Jun 2009
    Location
    Helsingør
    My Bikes
    1 Speedster & 2 Ibis Touche, 2 Thorn Raven Tour, 2 Thorn Audax mk III, Pedersen, Koga Roadchamp, Centurion Super Le Mans, GT Karakoram Elite, Motobecane Trainer, Mtobecane Inter tandem and 9 cycles (singlecoaster, 2 - 3 gear Torpedo)
    Posts
    70
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    We are using the old standard stem and fork from Ibis, which is a threaded fork and a down-into-the-fork stem.

    We are using cross brakes: low profile cantilevers from Shimano. Std from Ibis 1994.

  9. #9
    hors category TandemGeek's Avatar
    Join Date
    Jan 2002
    Posts
    7,151
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by swamptandem View Post
    I'm not familiar with "comotion primevar" forks. .
    typo....

    Co-Motion Primera, as in the steel fork that Co-Motion uses on it's Primera tandem.

  10. #10
    Senior Member
    Join Date
    Oct 2009
    Posts
    888
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Wouldn't it be easier to get a headset with a lower stack height so you can use the forks you have. You might even be able to modify the headset you have to make it a bit shorter. I have done this on my bikes before.

  11. #11
    Senior Member IbisTouche's Avatar
    Join Date
    Jun 2009
    Location
    Helsingør
    My Bikes
    1 Speedster & 2 Ibis Touche, 2 Thorn Raven Tour, 2 Thorn Audax mk III, Pedersen, Koga Roadchamp, Centurion Super Le Mans, GT Karakoram Elite, Motobecane Trainer, Mtobecane Inter tandem and 9 cycles (singlecoaster, 2 - 3 gear Torpedo)
    Posts
    70
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Another headset - I have been thinking this too. We have two Ibis Touche and was advised to use Chris King by two LBS. None of them seem to have wondered about the length of the fork, that the Chris King headset need a longer fork than the headset we had been using on the Ibis´. We have been waiting for the headset to come from USA to Denmark from November to February. I am pissed about all this and still now that Chris King is a very good headset, probably better than our old tandems. It could be a solution to use a less good quality headset, but I still search for a fork to use.
    To modify the Chris King I haven´t heard about this before.

Posting Permissions

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