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Am I to heavy for CF

Old 11-25-07, 11:19 AM
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Am I to heavy for CF

This is a heck of a time to be asking, but I wonder if being 200# I'm to heavy for CF. I've read some post (not many) saying that if your over 180# you shouldn't be riding carbon fiber. I figured if a bike has carbon stays and forks, what difference it would make and most bikes today have that. Anyway do any of you ride CF or know of anybody that does, that weigh over 200# ?
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Old 11-25-07, 11:22 AM
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Depends on the bike, not the stuff it's made from.

Having said that... I ride steel for the versatility and toughness. Ain't no carbon touring bikes...
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Old 11-25-07, 11:28 AM
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I should have added that, I bought a Specialized Roubaix Elite, which is all carbon. I have a steel bike as well and I have to say, the ride is so close it's hard to tell the difference.
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Old 11-25-07, 11:42 AM
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It depends upon the bike. Just like for any other material, it depends upon what spec they build the bike to.

You could build a CF bike to hold 1000 pounds, no problem. CF is very strong.

I'm pretty sure that Trek specs at least some of their CF bikes to 275-300 pounds.

If a bike had a max rider weight as low as 200, then it should have a warning in its manual.

Now there are some wheels that won't hold true under higher weights. Some racing wheels can have problems as a rider gets up over 150-160. I can't imagine the standard wheels on your Specialized would fall into that category. There are probably extremely lightweight CF racing bikes built to the same specs.

Haven't seen the specs for your bike, but would be surprised if the weight capacity was under 250 pounds.
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Old 11-25-07, 11:45 AM
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Roubaix should be ok- Providing you don't go offroad with it. But on top of that Specialised have an exceptionally good warranty so all you have to worry about if it does break is the Hospital bills.
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Old 11-25-07, 12:19 PM
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Again, I didn't put my brain into gear before I posted. I was just going over a lot of stuff on Google about CF and I feel I made a good choice. Thanks for the replys guys.
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Old 11-25-07, 01:32 PM
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I'm about 250 and have about 3,000 miles on my CF Roubaix. I've had no problems with it and I ride on reasonably good country roads. I ride with several other guys between 200 and 250 that ride CF bikes.
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Old 11-25-07, 02:10 PM
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Originally Posted by MikeLD View Post
I'm about 250 and have about 3,000 miles on my CF Roubaix. I've had no problems with it and I ride on reasonably good country roads. I ride with several other guys between 200 and 250 that ride CF bikes.
That makes me feel good and glad to hear, thanks. Now to try and lose more weight.
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Old 11-25-07, 03:24 PM
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235# with 7,500 miles on my Fuji Team Pro
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Old 11-25-07, 04:19 PM
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200 lbs on a 62cm Calfee Tetra since 2001 and, love it more every year. I often consider it a bike made for heavier riders. It just feels and performs great. In the classic spirit of carbon bikes, I believe the material is actually better suited to the heavier rider. The larger steel frames especially seemed more prone to flex while carbon comes in much stiffer overall. With carbon construction one gets excellent efficiency while getting that sublime ride with tire/wheel selection and inflation pressure.

Taking advantage of carbon's relatively low weight, some companies have probably shaved these bikes to less than acceptable constructional weights and, these bikes may be best suited to lightweight riders. However, in the case of Scott, Cervelo and maybe some others it appears that the BB area was suffering premature cracking even with lighter riders. This has reported to been corrected now though. I think it was just a case of not quite finishing the design and testing before launch. These companies are always in a hurry to get their new "lightweight" rocket on the market.
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Old 11-25-07, 04:24 PM
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Originally Posted by George View Post
Again, I didn't put my brain into gear before I posted. I was just going over a lot of stuff on Google about CF and I feel I made a good choice. Thanks for the replys guys.
George, would you mind telling us what sites you visited that helped you feel good about your choice. I've over 5000 miles on CF and I'm at 205. My brother, however, is still quite leary.
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Old 11-25-07, 04:36 PM
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For the last 7 years, at weights ranging from 225-240, I've been riding a Trek 5200 for a total of about 24,000 miles. Never a problem structurally with the frame. Wheels, cranks, handle bars... now that's a different story.

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Old 11-25-07, 04:54 PM
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165lbs on my 20 year old Specialized steel........no probs yet-- cross your fingers.
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Old 11-25-07, 05:47 PM
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Originally Posted by BSLeVan View Post
George, would you mind telling us what sites you visited that helped you feel good about your choice. I've over 5000 miles on CF and I'm at 205. My brother, however, is still quite leary.
Now your really taxing my brain , I think I wrote in, How much weight on a carbon fiber Specialized Roubaix. I got one report on the Tarmac that was pretty good. I'll see if I can find it and copy and paste it for you.
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Old 11-25-07, 05:50 PM
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Originally Posted by George View Post
Now your really taxing my brain , I think I wrote in, How much weight on a carbon fiber Specialized Roubaix. I got one report on the Tarmac that was pretty good. I'll see if I can find it and copy and paste it for you.
I also used the search in the bike forums, Specialized Roubaix. All kinds of good stuff. I feel 10 pounds lighter already.

I just got back from doing 10 miles and is it cold for down here, 47 degrees and 15mph out of the west.
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Old 11-25-07, 05:51 PM
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Originally Posted by CrossChain View Post
165lbs on my 20 year old Specialized steel........no probs yet-- cross your fingers.
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Old 11-25-07, 07:51 PM
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I weigh 200 lbs and have ridden my Specialized Roubaix Expert 2500 miles since August of this year. At 200 lbs I'd be more worried about the wheels than the frame. Over the years I've had several other bikes and always had issues with the rear wheels. This new bike has Krysisium Elite wheels and the rear wheel is still running as true as "new". From what I've read is that the eariler carbon frames were more weight limited than today's carbon frames.
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Old 11-25-07, 07:54 PM
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I wouldn't try doing a lot of big jumps if I were you.
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Old 11-25-07, 08:06 PM
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I weigh ~255 lbs and purchased a Specialized Roubaix Pro about two months ago. My LBS didn't mention anything about a weight limit and so far, no problems.

Wish you luck!
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Old 11-25-07, 08:15 PM
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George, I have a Specialized Roubaix Pro with about 4500 miles on it in 15 months. I have weighed between 189 and 198. No problem. Keep riding.

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Old 11-26-07, 07:10 AM
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Originally Posted by George View Post
I should have added that, I bought a Specialized Roubaix Elite, which is all carbon. I have a steel bike as well and I have to say, the ride is so close it's hard to tell the difference.
One of the regular Sunday riders has the same bike and he weighs 200+ at 6' 6". He hasn't had any problems with his bike.
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Old 11-26-07, 08:05 AM
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Thanks for all the help everybody, I always check everything out before I ride anyhow, but it's go to know that the Roubaix or any other CF is that good.
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Old 11-26-07, 08:40 AM
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Originally Posted by Tom Bombadil View Post
You could build a CF bike to hold 1000 pounds, no problem. CF is very strong.
+1. Formula 1 race cars have complete carbon-fiber suspension systems that sustain thousands of pounds of downforce and cornering loads. But as mentioned, it all depends on the wall thickness and geometry of the particular bike.

Your Roubaix is more of a "sport" bike than an all-out racing bike, so I'm sure it is designed with a good margin of safety in the loads that it supports.
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Old 11-26-07, 10:26 AM
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I'm just about to fly my family to California on an Airbus. What are our chances?
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Old 11-26-07, 10:40 AM
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Originally Posted by George View Post
Thanks for all the help everybody, I always check everything out before I ride anyhow, but it's go to know that the Roubaix or any other CF is that good.
I'd give the props to Specialized. A few years ago they came upwith the idea for a bike that was cheap, quick, and reasonably comfy. That became the Seqouia.

While it sold, they didn't really understand what they had tapped into. One guy did, and laid all his chips on the table to get a handful of Roubaixs made. Specialized had no faith in it, no advertising, nothing. In fact, they told their dealers they'd take them back if they didn't sell.

They sold. In fact, they back ordered, and before long they had to dedicate a whole factory to producing them.

I think that company is on a roll.
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