Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 35

Thread: Am I too heavy?

  1. #1
    Senior Member zonatandem's Avatar
    Join Date
    Dec 2003
    Location
    Tucson, AZ
    My Bikes
    ariZona carbon fiber tandem & single
    Posts
    10,102
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Am I too heavy?

    Today the bolt holding the saddle rails to the saddle clamp broke in half!
    At a 135 lbs, am I now too heavy ?
    Or is it a cheap bolt on an expensive seatpost/saddle combo?
    First time ever that I broke a bolt like that since I started riding in the mid-1970s!
    Attached Images Attached Images

  2. #2
    bicycle snobs stay away. casio04330's Avatar
    Join Date
    Apr 2014
    Location
    AUGUSTA MAINE
    My Bikes
    26" Huffy Cranbrook Men's Cruiser Bike with allen sports trailer
    Posts
    187
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    I am Pushing 240 LBS... you're not to big... just keep at it..
    From now on i will add anyone who tries to troll me to my ignore list without replys

  3. #3
    USMC Veteran qcpmsame's Avatar
    Join Date
    Jan 2008
    Location
    Pensacola, Florida
    Posts
    7,188
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Knowing you, Rudy, it just flat wore out from use with all the miles you and Mrs. Kay log. Either that of just a defective bolt that gave up the ghost, finally.

    Bill
    "I Can Do All Things Through Christ Who Strengthens Me" Philippians 4:13

    "We can't control that we have Parkinson's, but we can control how we live with Parkinson's" Davis Phinney

  4. #4
    Cycling Anarchist Trsnrtr's Avatar
    Join Date
    Jun 2002
    Location
    Central Illinois
    Posts
    3,200
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by qcpmsame View Post
    Knowing you, Rudy, it just flat wore out from use with all the miles you and Mrs. Kay log. Either that of just a defective bolt that gave up the ghost, finally.

    Bill

    Gotta go with this one. You're an inspiration.
    Dennis T

  5. #5
    Senior Member
    Join Date
    Aug 2006
    Location
    NW AR & Central LA
    Posts
    2,677
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    At 135 pounds, you're a a real tub 'o lard. Seek medical attention immediately

    Alternately... I guess they don't make 'em like the used to.

  6. #6
    Registered User
    Join Date
    Mar 2014
    Location
    Mid-Atlantic
    My Bikes
    Too many
    Posts
    548
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I have broken several saddle rails and one seat bolt.

    What name is on the seatpost?

  7. #7
    Senior Member
    Join Date
    Nov 2013
    Location
    Central Ohio
    Posts
    105
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Some kind of parts/metal fatigue I'd guess. I weigh 220 and sometimes wonder about my very lithe road bike frame from the 70's.

  8. #8
    Let's do a Century jppe's Avatar
    Join Date
    Oct 2004
    Location
    North Carolina
    My Bikes
    Pinarello Prince/Campy SR; Cervelo R3/Sram Red; Trek 5900/Duraace, Cervelo P2C/Duraace
    Posts
    6,156
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    It is very obvious you are NOT eating and drinking the same stuff that I consumed while I was in Tucson last week. I bet you've never even been to Guadalajara on Prince Street!
    Ride your Ride!!

  9. #9
    The Improbable Bulk Little Darwin's Avatar
    Join Date
    Jul 2005
    Location
    Wilkes-Barre, PA
    My Bikes
    Many
    Posts
    7,475
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    If you are too large for one bolt, I need at least 3.
    Slow Ride Cyclists of NEPA

    People do not seem to realize that their opinion of the world is also a confession of character.
    - Ralph Waldo Emerson

  10. #10
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    3,089
    Mentioned
    44 Post(s)
    Tagged
    0 Thread(s)
    Ouija board is DNF
    As I dont know what specific post you are speaking of .. IDK .. It may be cheap and the bolts doubly so .. chromed mild steel ..
    many, the lower cradle is what supports the rider's weight, the bolts just control the tilt.

    perhaps you need to pick another seat post for it's beefy design .. maybe this: Tall & Handsome Seatpost from Paul Component Engineering

    Or, Universal Cycles -- Nitto S83 Seatpost

    My older American Classic post was machined out to be thicker on the front/back to resist bending forces too

    IDK about the new Candy cane style Universal Cycles -- Seatposts > American Classic Seatposts
    Last edited by fietsbob; 05-13-14 at 11:05 AM.

  11. #11
    Senior Member GravelMN's Avatar
    Join Date
    May 2014
    Location
    Rural Minnesota
    Posts
    477
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    My guess is a titanium or alloy bolt that was defective or had been tightened too much at some point and was already cracked. I'm a fan of SS hardware when possible, but then the last time I was 135 pounds I was in Jr High.
    Last edited by GravelMN; 05-13-14 at 04:53 PM.

  12. #12
    just another gosling Carbonfiberboy's Avatar
    Join Date
    Feb 2007
    Location
    Everett, WA
    My Bikes
    CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004
    Posts
    8,516
    Mentioned
    5 Post(s)
    Tagged
    1 Thread(s)
    The second recent broken seatpost bolt! Bad shipment of Chinese bolts. OTOH you probably did just wear it out. Stoker and I are only 134, so we haven't peaked yet. We're still trying to wear out our first tandem.

  13. #13
    Senior Member zonatandem's Avatar
    Join Date
    Dec 2003
    Location
    Tucson, AZ
    My Bikes
    ariZona carbon fiber tandem & single
    Posts
    10,102
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    fietsbob:
    The seatpost: Specialized carbon fiber.
    The broken bolt: nice and shiny chromed cheapo?
    LBS told me they did not have such a bolt so hightailed it to Ace Hdwe.
    Ace is the place . . .
    Rode it today, worked just fine.

  14. #14
    USMC Veteran qcpmsame's Avatar
    Join Date
    Jan 2008
    Location
    Pensacola, Florida
    Posts
    7,188
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    It seems that few of the fasteners on bicycles are high quality, I regularly go to Lowes and match up one of the peanut butter fasteners that come on many components now with a good grade 8 or a stainless steel that fills the bill. Glad you found the fastener you needed, Rudy, now go wear another one out with your large mileage numbers.

    Bill
    "I Can Do All Things Through Christ Who Strengthens Me" Philippians 4:13

    "We can't control that we have Parkinson's, but we can control how we live with Parkinson's" Davis Phinney

  15. #15
    <riding now> BigAura's Avatar
    Join Date
    Jul 2007
    Location
    Chapin, SC
    My Bikes
    surly LHT, paris sport fixie, trek 5000, fuji ss
    Posts
    1,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    You're looking at the wrong scale, your weight is great. You or your shop needs to use one of these:


  16. #16
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,975
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Looks to me like you have 2 choices:
    1. Ride less.
    2. Buy a new bolt.

    I'm betting you'll go for choice #2 . If you buy two so that you have a ready replacement on hand, Murphy's Law says that the one on your bike will never break again.
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  17. #17
    Senior Member
    Join Date
    Mar 2013
    Location
    Tucson Az
    My Bikes
    83 Team Fuji, 85 Novara Strada, 13 BD Motobecane 650ht
    Posts
    196
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm pretty sure my skeletal structure weighs more than 135lbs, I think your weight is fine.

  18. #18
    Senior Member rdtompki's Avatar
    Join Date
    Nov 2008
    Location
    Hollister, CA
    My Bikes
    Volagi, daVinci Joint Venture
    Posts
    3,963
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    All cyclists are, by definition, too heavy for the sport.
    Rick T
    --------
    Volagi - Triple"ized" and Tubeless
    daVinci Joint Venture

  19. #19
    Registered User
    Join Date
    Mar 2014
    Location
    Mid-Atlantic
    My Bikes
    Too many
    Posts
    548
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    The blame for inferior metals rests with whomever contracted with the External Manufacturer.

    Does Specialized spec out the fasteners and do they routinely verify that they are getting the quality specified?

    This is an extremely common problem and often has nothing to do with using a torque wrench.

  20. #20
    A might bewildered... Dudelsack's Avatar
    Join Date
    Oct 2011
    Location
    Loovul
    My Bikes
    Bacchetta Giro ATT 26; Lemond Buenos Aires
    Posts
    6,291
    Mentioned
    15 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by BigAura View Post
    You're looking at the wrong scale, your weight is great. You or your shop needs to use one of these:

    Can anyone recommend a torque wrench that is inexpensive, highly accurate, and durable?

    I guess I'd settle for two out of three.

  21. #21
    Senior Member big john's Avatar
    Join Date
    Sep 2005
    Location
    In the foothills of Los Angeles County
    Posts
    10,889
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by doctor j View Post
    At 135 pounds, you're a a real tub 'o lard. Seek medical attention immediately
    Borderline morbidly obese.

    Let's see, I have only broken 1 seatpost bolt but have broken 4 saddle rails, 4 seatposts, 4 frames, 2 mtb shocks, snapped 3 pedals, countless spokes, and over a dozen wheels.

  22. #22
    Senior Member big john's Avatar
    Join Date
    Sep 2005
    Location
    In the foothills of Los Angeles County
    Posts
    10,889
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BigAura View Post
    You're looking at the wrong scale, your weight is great. You or your shop needs to use one of these:

    Dudelsack, the Park pictured will work, as will Snap-on, Mac, Matco, Craftsman, or many others. Watch for a sale.

  23. #23
    Pedo Grande Popeyecahn's Avatar
    Join Date
    Jul 2008
    Location
    San Diego
    My Bikes
    '98 Serotta Legend Ti, Vitus 979
    Posts
    839
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Material fatigue. Likely caused by over tightening and the stresses of riding. The clamp on my older Campy post broke after it had been tightened down due to creaking. After close inspection it was apparent that the failure point was long in the making, the recent adjustment brought about its demise. Funny thing though, I was going to adjust the saddle position and after I loosened it the broken piece fell to the floor. Btw I weigh about 135 or so as well.
    And tell my mama I'm a hundred years late
    I'm over the rails and out of the race...

  24. #24
    Registered User
    Join Date
    Mar 2014
    Location
    Mid-Atlantic
    My Bikes
    Too many
    Posts
    548
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Cozy Beehive: Broken Thomson Seatposts & The Overtightening Syndrome

    http://www.pirate4x4.com/tech/billav...lts_signed.pdf

    Bolts that are too lose will fatigue.

    Is it possible people confuse lb-ft with N-m and over tighten just a bit.

    Thompson claims they are the only ones in the industry checking their "nuts/bolts" at incoming.

  25. #25
    Senior Member jjames1452's Avatar
    Join Date
    Jun 2011
    Location
    Dayton, Ohio
    My Bikes
    Steel Schwinns, AD Puch, Trek's, Kona, Jamis
    Posts
    534
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Stuff breaks.
    At between 208-216 lbs stuff probably breaks more frequently with me.
    I take my bikes into the LBS a time or two during the year for a safety check.
    It helps identify parts that need replacement (perhaps) before failure.

Page 1 of 2 12 LastLast

Posting Permissions

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