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Should a big rider be afraid of a Aluminum/Carbon frame(5 posts)

Should a big rider be afraid of a Aluminum/Carbon frameJRF
Sep 16, 2002 4:51 PM
This is the best list online.
I have found the information here to be very helpful (I have lurked a long time).

Anyhow, I have a riding buddy, he is 6'1 230lbs, Prison Gaurd. he presently is riding an old steel Kabooki and wants to get a new bike. He is considering the Scattante Supergo has, but is concerned his weight will be too much for the frame.

Is rider weight a consideration when deciding on what frame material one selects? Or will any good quality frame take the beating?
Thanks in advance for your help!
Depends on the frameKerry
Sep 16, 2002 5:25 PM
If the design goal of the frame guys was to get as light as possible, then your 230 lb. friend should do an about face and get out of there. At the same time, there are some very solid Al and CF frames. Today, there is such an emphasis on light weight frames, that heavy folks should be particularly wary of CF and Al without knowing the details.
I think he should get itishmael
Sep 16, 2002 11:02 PM
I'm not big on safety and I think he should live it up as long as he can. And if it breaks, then it breaks and maybe he can get another one under warranty. How long is that warranty anyway? I'm not sure if it's the safest route, but it'll be the most exciting and economical. He'll probably only land on his shoulder or some other soft part of the body. Tell him to make sure he puts his hands out if he's going down face first and try to lean a shoulder into it if need be. Always protect the head if you have enough time to think about it. I've heard(and am hopeing its true) that animal instinct takes over and somehow you just end up all right. He should try practicing, I havent done it yet but I've heard it's all the rage with the pros. Crashes are nothing for pros, just part of the job, they practice all the time. Lance rides for 5 hours a day then crashes for 1. Let some of the air out of your tires first. Good luck, I'm rooting for him. Tell me how things go.
Crashes aren't the problem here...fbg111
Sep 17, 2002 5:43 AM
breaking the frame is. I'm pretty sure the thread starter is not concerned so much about crashing, but about a relatively heavy guy (230lbs) buying a lightweight frame without enough safety factor and causing it to break eventually. Yes, he'll probably crash, but will bust the frame too and have to buy a new one.

Is there any way to find out the manufacturer's maximum recommended weight for a particular line of frames? I would think that the engineers would have designed the frame with such tolerances in mind.
It uses Columbus Altec2Tig
Sep 17, 2002 5:43 AM
...which is thicker and not as light/fragile as their Airplane and Starship tubes. The frame is around 3+ pounds, which puts it toward the heavy and durable end of modern aluminum frames. When in doubt, talk to Supergo and ask for a rider weight limit. As long as the tubes were welded in accordance to Columbus' recommendations, I wouldn't worry too much. The same goes with the use of carbon seat stays. They themselves are not weak at all as long as they are properly bonded to the frame.

Big guys ride Cannondales with even thinner walled tubes without problems. I think Cannondales are meant for larger riders and not smaller guys like me (too rough).

For a low cost option I'd also check out a similar bike from Leader Bike USA http://www.leaderbikeusa.com/newLBweb/ldweb/road/LD7900.htm
They sell their basic aluminum frames for $119 on Ebay http://www.ebaystores.com/id=21589081