Is this a common problem with i beam seatpost.

Paulkingk
Paulkingk Posts: 689
edited January 2011 in MTB workshop & tech
This post is 9 months old i have never had a post failure in 10 years of riding. Does anyone know the wattenty situation?
http://www.pinkbike.com/photo/6026177/

Comments

  • cavegiant
    cavegiant Posts: 1,546
    oh snap!
    Why would I care about 150g of bike weight, I just ate 400g of cookies while reading this?
  • jairaj
    jairaj Posts: 3,009
    I've got 2 ibeam posts, one 3 years old and the other 6 months old both been fine for me. I've not heard much about the ibeam posts failing not sure if its because they are rare or just good reliability. Contact the place of purchase see what they say...
  • Paulkingk
    Paulkingk Posts: 689
    E mailed chain reaction see what they say. if no luck i'll try contacting SDG could have been really nusty on the twins, if you know what i mean. Nuts, tyre, frame, ouch!
  • njee20
    njee20 Posts: 9,613
    Common failure sadly, they're always on sale for a reason...
  • lawman
    lawman Posts: 6,868
    similar thing happened to my dad's easton post, and a mate cleanly snapped his fsa carbon post in half, fairly common thing to happen.
  • scale20
    scale20 Posts: 1,300
    Exactly the same thing happened to my mates ibeam post, had a nice gash on his leg to go with it I think. He was doing the last section on the Marin Trail. :cry:

    I know of 2 of these posts doing this now.

    I know he got his changed but had a bit of a battle, they wouldnt let him swap it for a different post. I hope you get it sorted.
    Niner Air 9 Rigid
    Whyte 129S 29er.
  • peter413
    peter413 Posts: 5,120
    Mine has been fine for about 8 months now but I know of someone who's post snapped in exactly the same place. The problem is that they are two different grades of alloy (or whatever the metals are) and they expand and shrink at different rates in different temperatures causing the post to snap like that
    Transition Patrol
    Cube LTD 29er

    Glentress Trailfairies
  • Paulkingk
    Paulkingk Posts: 689
    Ok just to update it's easy to complain when a product goes wrong but not to say anything when the company sorts things out with minimal fuss.. I emailed SDG and the cycle shop i bought the original post from. SDG replied first and swiftly told me to send the post back to Silverfish and they would get me out a new micro adjust seat post free of charge regardless of weather it was in the warranty period or not . True to there word i now have a brand new replacement free of charge. Tyler Anspach at SDG was really helpful as was Raul Walker of silverfish. With the customer service i have had i am happy to keep running the I beam seat post. I had one previously for about 3yrs without problem. Only changed it as i had a new frame that the old post didn't fit in.
  • nicklouse
    nicklouse Posts: 50,675
    a quick favor lets have a side on pic of the saddle with clamp attached.

    old or new. :wink:
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Paulkingk
    Paulkingk Posts: 689
    What? with the post in the frame in my normal riding position?
  • nicklouse
    nicklouse Posts: 50,675
    saddle on post in normal riding position or the remains as in your earlier post side on.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Paulkingk
    Paulkingk Posts: 689
    OLd post has gone back fitted new post today. will put pic up tomo when i have time.
  • Paulkingk
    Paulkingk Posts: 689
    Ok pics here. Sorry for the delay
    http://www.pinkbike.com/photo/6099420/
    http://www.pinkbike.com/photo/6099419/
    |Hope thiese are ok :roll:
  • nicklouse
    nicklouse Posts: 50,675
    cheers, it just looked like you were running the seat very far back/front of the beam which can cause issues and is not recommended.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • The Northern Monkey
    The Northern Monkey Posts: 19,174
    i guess this happens because the "rails" have to flex or give compared to standard seatpost setup?
    Santa Cruz Butcher

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