Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Clydesdales/Athenas (200+ lb / 91+ kg) Looking to lose that spare tire? Ideal weight 200+? Frustrated being a large cyclist in a sport geared for the ultra-light? Learn about the bikes and parts that can take the abuse of a heavier cyclist, how to keep your body going while losing the weight, and get support from others who've been successful.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-05-08, 10:07 PM   #1
Kid-Cycle
Folsom Prison Blues
Thread Starter
 
Kid-Cycle's Avatar
 
Join Date: Nov 2003
Location: Folsom, CA
Bikes: '04 Trek 5200, '73 Raleigh Grand Sport "Fixie" & '94 Specialized Rock Hopper Comp MTB
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Broke my seat post on Saturday...

... I was just about to crest the hill at my half way point of my 20 mi ride, sitting back on my saddle and powering up the last portion of the hill and all of a sudden my saddle rotated backward. I stood up on the pedals and looked back and saw my saddle hanging by the stem strap of my wedge pack. The post broke just below the saddle bracket insert and it left a 4 ish inch spike with sharp edges protruding in place of my saddle! Luckily I didn't drop onto the post or I could have been in some serious trouble.

I walked my ride to the top of the hill and went to pull my cellphone out of my jersey pocket and it wasn't there!!! I always take my phone on rides. Anyway, I was able to use a fellow cyclists phone and the wife and kids came to my rescue. When I got home I found my phone inside the plastic baggie (I put my phone in a snack baggie to keep it sweat free while riding) inside the drawer where I keep the baggie!

Before calling my wife, I removed the broken stem and inserted the remaining inches of stem attached to my saddle into the seat tube and tried to ride it... way to short - felt like I was riding one of my kids bikes!!! That afternoon I went to LBS and bought a new seat post and all is well in my cycling world.

The seat post was the stock Bontrager that came with my Trek 5200 and it had a little over 8k miles on it. I repalced it with an aluminum Easton post.
__________________
Uphill or downhill; headwind or tailwind; Pavement or Dirt ... it's all good.
Kid-Cycle is offline   Reply With Quote
Old 08-06-08, 05:05 AM   #2
Mazama
Bikezilla
 
Mazama's Avatar
 
Join Date: Aug 2007
Location: Flori-Duh
Bikes: Co-Motion Mazama
Posts: 881
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had one fail a couple of years ago. Quite a scary feeling. I replaced mine with a Thomson Elite. So far, so good.
Mazama is offline   Reply With Quote
Old 08-06-08, 08:02 AM   #3
Caincando1
Senior Member
 
Caincando1's Avatar
 
Join Date: Jun 2007
Location: Dodge Center, MN
Bikes: Trek Pilot 1.0
Posts: 820
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yep my stock Bonty CF post failed on my 06 pilot too.
Caincando1 is offline   Reply With Quote
Old 08-06-08, 08:59 AM   #4
CliftonGK1
Senior Member
 
CliftonGK1's Avatar
 
Join Date: Jul 2006
Location: Columbus, OH
Bikes: '08 Surly Cross-Check, 2011 Redline Conquest Pro, 2012 Spesh FSR Comp EVO, 2015 Trek Domane 6.2 disc
Posts: 11,380
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Back in my MTB days when I'd do big drops and ride down long staircases on campus, I bent a seatpost; but I never snapped one clean in half. Just lucky, I suppose. I have the stock post on my Cross Check, with about 5" sticking out from the seat tube. So far (2560 miles) it seems to be in good shape. *knock on wood*
CliftonGK1 is offline   Reply With Quote
Old 08-06-08, 09:05 AM   #5
snowdog650
Senior Member
 
snowdog650's Avatar
 
Join Date: Aug 2004
Location: Sacramento, CA
Bikes: Bianchi Vigorelli
Posts: 125
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Don't feel bad. Jens Voigt did the same thing during Stage 21.
snowdog650 is offline   Reply With Quote
Old 08-06-08, 11:57 AM   #6
B Piddy
Keep on, keepin on
 
B Piddy's Avatar
 
Join Date: Jun 2007
Location: La Crescent, MN
Bikes: IRO Jamie Roy Custom build, Giant Sedona, '06 Trek Madone 5.2
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Oh great, this is what I have to look forward to.
B Piddy is offline   Reply With Quote
Old 08-06-08, 01:50 PM   #7
Caincando1
Senior Member
 
Caincando1's Avatar
 
Join Date: Jun 2007
Location: Dodge Center, MN
Bikes: Trek Pilot 1.0
Posts: 820
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
We're talking about breaking carbon fiber posts here. I doubt anyone is going to snap a alum. one. Maybe bend it but not snap it.
Caincando1 is offline   Reply With Quote
Old 08-06-08, 02:16 PM   #8
B Piddy
Keep on, keepin on
 
B Piddy's Avatar
 
Join Date: Jun 2007
Location: La Crescent, MN
Bikes: IRO Jamie Roy Custom build, Giant Sedona, '06 Trek Madone 5.2
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yeah I have a bonty CF seat post on my Trek. So...some day.
B Piddy is offline   Reply With Quote
Old 08-06-08, 02:52 PM   #9
hammond9705
Senior Member
 
Join Date: Mar 2006
Bikes:
Posts: 1,416
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CF seat posts are not good for people on this forum. Thomson are great, or if that is too pricey, some other alum post.
hammond9705 is offline   Reply With Quote
Old 08-06-08, 05:42 PM   #10
Kid-Cycle
Folsom Prison Blues
Thread Starter
 
Kid-Cycle's Avatar
 
Join Date: Nov 2003
Location: Folsom, CA
Bikes: '04 Trek 5200, '73 Raleigh Grand Sport "Fixie" & '94 Specialized Rock Hopper Comp MTB
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I am talking about an aluminum seat post.... not a CF. My frame is CF but not the seat post.
__________________
Uphill or downhill; headwind or tailwind; Pavement or Dirt ... it's all good.
Kid-Cycle is offline   Reply With Quote
Old 08-06-08, 06:12 PM   #11
Mr. Beanz
Banned.
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Posts: 20,030
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Kid-Cycle View Post
I am talking about an aluminum seat post.... not a CF. My frame is CF but not the seat post.

Wow, aluminum? How much do you weigh? I have a Bonti CF on my Lemond, no problems after 15,000 miles (220-245 lbs). But all road riding, no hopping curb stuff!
Mr. Beanz is offline   Reply With Quote
Old 08-06-08, 07:19 PM   #12
jaxgtr
Senior Member
 
jaxgtr's Avatar
 
Join Date: Jul 2006
Location: Jacksonville, FL
Bikes: Trek ALR 6, Trek CrossRip, Trek X-Caliber 8
Posts: 4,354
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Swapped out my CF for a Thomson as well.
__________________
Brian | 2015 Trek Emonda ALR 6 | 2015 Trek X-Caliber 8 | 2014 Trek CrossRip Comp
Quote:
Originally Posted by AEO View Post
you should learn to embrace change, and mock it's failings every step of the way.
jaxgtr is offline   Reply With Quote
Old 08-06-08, 07:23 PM   #13
txvintage
Tilting with windmills
 
txvintage's Avatar
 
Join Date: May 2008
Location: North Texas 'Burbs
Bikes: Many
Posts: 4,832
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Oh the carnage!

It's a bit scary hearing an aluminum post failed. Kind of makes ya shudder just a bit.
txvintage is offline   Reply With Quote
Old 08-07-08, 07:27 AM   #14
Caincando1
Senior Member
 
Caincando1's Avatar
 
Join Date: Jun 2007
Location: Dodge Center, MN
Bikes: Trek Pilot 1.0
Posts: 820
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wow, post some pictures of that. I've never seen an aluminum post snap off!
Caincando1 is offline   Reply With Quote
Old 08-07-08, 09:08 AM   #15
B Piddy
Keep on, keepin on
 
B Piddy's Avatar
 
Join Date: Jun 2007
Location: La Crescent, MN
Bikes: IRO Jamie Roy Custom build, Giant Sedona, '06 Trek Madone 5.2
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Whoa...agreed. You must have hit the fatigue limit on that sucker.
B Piddy is offline   Reply With Quote
Old 08-07-08, 10:16 PM   #16
Kid-Cycle
Folsom Prison Blues
Thread Starter
 
Kid-Cycle's Avatar
 
Join Date: Nov 2003
Location: Folsom, CA
Bikes: '04 Trek 5200, '73 Raleigh Grand Sport "Fixie" & '94 Specialized Rock Hopper Comp MTB
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I weigh ~250. No curb hopping or anything like that and when I do go over RR tracks or potholes I am out of the saddle. I will take a pic and attempt to post it from work tomorrow. Anyway, it is a 27.2 dia Bontrager Race black anadized aluminum seat post.

I'm thinking there was some sort of internal flaw and I hit the fatigue limit. When looking at the break, it looks to me like about a quarter of the circumfrance material is chalky looking and the remaining 3/4 looks like shiny metal... possibly it was just a poor casting.
__________________
Uphill or downhill; headwind or tailwind; Pavement or Dirt ... it's all good.
Kid-Cycle is offline   Reply With Quote
Old 08-08-08, 12:03 AM   #17
the_mac
Senior Member
 
Join Date: Apr 2008
Bikes:
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'd e-mail trek and let them know about it. They'll probably want to see the post and will likely offer you a replacement (and who knows, maybe some other swag as well).

Even if they tell you to go pound sand, you're just out the cost of an e-mail.
the_mac is offline   Reply With Quote
Old 08-08-08, 10:53 PM   #18
Kid-Cycle
Folsom Prison Blues
Thread Starter
 
Kid-Cycle's Avatar
 
Join Date: Nov 2003
Location: Folsom, CA
Bikes: '04 Trek 5200, '73 Raleigh Grand Sport "Fixie" & '94 Specialized Rock Hopper Comp MTB
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Here are some pix of the seat post (hopefully)
Attached Images
File Type: jpg DSC01842.jpg (13.9 KB, 34 views)
File Type: jpg DSC01843.JPG (20.5 KB, 36 views)
__________________
Uphill or downhill; headwind or tailwind; Pavement or Dirt ... it's all good.
Kid-Cycle is offline   Reply With Quote
Old 08-09-08, 04:29 AM   #19
jakereed
Senior Member
 
Join Date: Jan 2008
Bikes:
Posts: 124
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Kid-Cycle View Post
Here are some pix of the seat post (hopefully)
Now I'll have nightmares after looking at these pictures.
Pretty scary to see, OUCH!!!
jakereed is offline   Reply With Quote
Old 08-09-08, 08:53 AM   #20
gazzaTMB
Junior Member
 
Join Date: Sep 2005
Bikes:
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It happens. I had an aluminum American Classic seatpost fail. At the time, I weighed 215. In my case, however, the shaft didn't break, the setback at the top of the seatpost failed catastrophically.

The failure caused me to fly right off the back of the bike at around 25mph. The crash resulted in a broken left wrist and an absolutely obliterated right thumb. After four months, a couple of surgeries, and some painful rehab, my hands are now working again. Thanks American Classic!

I'm sorry. I don't mean to worry anyone unnecessarily; I'm sure your aluminum seatpost will be just fine--especially is you're using a Thomson seatpost; they're really are super nice.

Kid-Cycle, I'm glad to know that you're okay. I suspect your Bontrager failure was an anomaly. But I would definitely e-mail those photos to Trek. They need to be aware of this.
gazzaTMB is offline   Reply With Quote
Old 08-09-08, 01:41 PM   #21
Kid-Cycle
Folsom Prison Blues
Thread Starter
 
Kid-Cycle's Avatar
 
Join Date: Nov 2003
Location: Folsom, CA
Bikes: '04 Trek 5200, '73 Raleigh Grand Sport "Fixie" & '94 Specialized Rock Hopper Comp MTB
Posts: 218
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'll send the photos to Trek just to inform them of what happened. Since I've already replaced the post I'm not looking for anything. The response on this subject suprised me... I didn't really think much about the rarity for a seat post fail... I was just thinking about the possible injuries such as gazza had.

Wish I would have heard all the good viewpoints on Thomson seat post before buying an Easton... My Easton seems pretty beefing so I'm good.
__________________
Uphill or downhill; headwind or tailwind; Pavement or Dirt ... it's all good.
Kid-Cycle is offline   Reply With Quote
Old 08-09-08, 01:45 PM   #22
Tom Stormcrowe
Out fishing with Annie on his lap, a cigar in one hand and a ginger ale in the other, watching the sunset.
 
Tom Stormcrowe's Avatar
 
Join Date: Mar 2006
Location: South Florida
Bikes: Techna Wheelchair and a Sun EZ 3 Recumbent Trike
Posts: 16,120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hard to tell from the blur, but that looks a lot like a fatigue failure. The metal has that dull gray crystallized look.
__________________
. “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

"We can judge the heart of a man by his treatment of animals." - Immanuel Kant
Tom Stormcrowe is offline   Reply With Quote
Old 08-10-08, 09:13 PM   #23
John1992
Senior Member
 
John1992's Avatar
 
Join Date: Aug 2006
Location: Toronto Canada
Bikes: Surly Cross Check
Posts: 298
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hi,
I have a cross check also and about 3 weeks ago the bolt holding the seat clamp broke in half as I was getting some speed up. I don't know how I was quick enough to stand up. Anyway I had my saddle as far back as it would go, a bit past the nmbers on the rails. I am assuming that helped or lead to the break. I replaced it with a mountain bike seat post thinking it would be stronger - it has a two screw clamp.
John1992 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 05:28 AM.