Go Back  Bike Forums > Bike Forums > Clydesdales/Athenas (200+ lb / 91+ kg)
Reload this Page >

Triathlon frames breaking under the weight!

Search
Notices
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.

Triathlon frames breaking under the weight!

Thread Tools
 
Search this Thread
 
Old 10-21-07, 05:42 PM
  #1  
Newbie
Thread Starter
 
Join Date: Oct 2007
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Triathlon frames breaking under the weight!

I'm a newbie to Triathlons, and I'm considering a carbon fiber Cervelo. I heard stories of frames breaking near the head tube. Has anyone heard of this? Any thoughts on a manufacterer who takes 240lbers into consideration? Materials? Aluminum better for heavier riders? Any thoughts would be great
boomerfish is offline  
Old 10-21-07, 05:46 PM
  #2  
Senior Member
 
mtnbk3000's Avatar
 
Join Date: May 2007
Posts: 1,072
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
carbon fiber is a lot stronger than some people make it out to be. the problem with carbon fiber is that if it is damaged it will completely fail, whereas aluminum will be rideable till you get home, and steel can be fixed without loosing stength. I don't know about the weight issue, but unless you fall or run into something you shouldn;t have a problem. (i have never ridden carbon fiber, but i have done enough research to feel confident in my answer, but like i said i have no idea if your weigh is gonna be a problem).
mtnbk3000 is offline  
Old 10-21-07, 06:51 PM
  #3  
Newbie
Thread Starter
 
Join Date: Oct 2007
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I've heard that some manufacturers use the same size tubing for all bikes regardless of overall size. Obviously, with a 60+cm frame, this would be especially prone to additional stresses if it weren't compensated for. I suppose that's part of the question.
boomerfish is offline  
Old 10-21-07, 08:04 PM
  #4  
Senior Member
 
Join Date: Dec 2006
Location: Manhattan KS
Posts: 431

Bikes: 2001 Giant OCR w/105-10spd, Schwinn High-Plains Built for Commute plus 3 Others in Various Stages of Rebuild/Repair

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by boomerfish
I've heard that some manufacturers use the same size tubing for all bikes regardless of overall size. Obviously, with a 60+cm frame, this would be especially prone to additional stresses if it weren't compensated for. I suppose that's part of the question.
In direct answer because of the ride tuning and focus on carbon layup that cervelo is known for I'm sure their tubes change with the size, they may be the same outside but are probably butted differently inside.

From what I have done in looking into Cervelo bikes (i thought long and hard about buying a soloist) they are noted for their excellence of design particularly in terms of strength and durability. In addition Tri/TT bikes tend to be a built heavier and stronger than equivalent road frames as in a tt bike efficiency of power transfer is generally more important than having the lightest weight. I test road a P2c at a higher weight with a salesman who knew his stuff and he didn't expect it to be a problem. As a marketing claim cervelo refers to the fact that fabian cancellara was the heaviest rider in the pro-tour on the r3-sl which was the lightest frame, so I imagine that has to count for something as well.
Halthane is offline  
Old 10-23-07, 01:19 PM
  #5  
Amateur stunt driver
 
D0ugB's Avatar
 
Join Date: Apr 2005
Posts: 134
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Halthane
From what I have done in looking into Cervelo bikes (i thought long and hard about buying a soloist) they are noted for their excellence of design particularly in terms of strength and durability. In addition Tri/TT bikes tend to be a built heavier and stronger than equivalent road frames as in a tt bike efficiency of power transfer is generally more important than having the lightest weight. I test road a P2c at a higher weight with a salesman who knew his stuff and he didn't expect it to be a problem. As a marketing claim cervelo refers to the fact that fabian cancellara was the heaviest rider in the pro-tour on the r3-sl which was the lightest frame, so I imagine that has to count for something as well.
From Wikipedia
Fabian Cancellera weighs 176 lbs !!!!! He's no clyde not even close.

Magnus Backstedt is the biggest protour rider I know of 207 lbs (per wikipedia)

please don't use pro tour riders to justify a frames ability to withstand punishment in a clydesdale forum.

back to previous the previous thread
D0ugB is offline  
Old 10-26-07, 09:40 PM
  #6  
Senior Member
 
Join Date: Mar 2007
Posts: 521
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
get a custom steel frame.
goldfishin is offline  
Old 10-27-07, 12:00 AM
  #7  
Gorntastic!
 
v1k1ng1001's Avatar
 
Join Date: Oct 2006
Location: United States of Mexico
Posts: 3,424
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I'd be careful. Some of those Cervelo frames look mighty skimpy for a guy your size. You can probably get buy with a carbon fiber frame that has a bit more beef to it.

You should definitely buy something with a lifetime warranty.
__________________
v1k1ng1001 is offline  
Old 10-27-07, 12:05 AM
  #8  
I Design Stuff
 
rickyaustin's Avatar
 
Join Date: May 2007
Location: Chicago
Posts: 341
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Every Cervélo frame comes with a limited lifetime warranty for the original owner. For full details on this warranty, please click here. Please note that frames not purchased from an authorized dealer are not covered by any warranty. For a list of authorized dealers, please check our dealer locator below.


https://www.cervelo.com/bikes.aspx?bike=P2C2007#W

Originally Posted by v1k1ng1001
I'd be careful. Some of those Cervelo frames look mighty skimpy for a guy your size. You can probably get buy with a carbon fiber frame that has a bit more beef to it.

You should definitely buy something with a lifetime warranty.
rickyaustin is offline  
Old 10-29-07, 06:39 AM
  #9  
Newbie
Thread Starter
 
Join Date: Oct 2007
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks for the input - I've been doing some more research, and at 6'5", the field is pretty narrow. I've been hearing great things about Kuota - beefier frame, slightly "easier" geometry, and the price point on their K-factor is great (2100).
boomerfish is offline  
Old 10-29-07, 09:25 AM
  #10  
Amateur stunt driver
 
D0ugB's Avatar
 
Join Date: Apr 2005
Posts: 134
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
There are a couple of companies that can make a custom carbon if you're heart is set on one. Guru had a special this spring for $4000 complete bike custom time trial frame
D0ugB is offline  

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.