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Triathlon/road bike - Trek? Carbon versus alu steel

Question: Can anyone share their experiences with Trek Bikes. I am currently looking at the 5200 as a performance road/triathlon racing bike My concern is that it is a carbon frame... roads here in Belgium are rough to say the least. Would I be better off with alu or steel... but what about the weight and responsiveness - sacrificed? I obviously want the leg power transformed into speed and not bike bend - but don't want to get off the bike after 5 hours still shaking from the vibrations of an uncomfortable ride.


Answer:I don't have any firsthand experience with carbon fibre bikes, never having ridden one. All my knowledge comes from reading reviews of them and talking with people who own them.

No, carbon fibre would be good for this. All the reviewers say that carbon is good at damping high-frequency vibration. I'm not sure why, it's in the nature of the material itself. This is why lots of alu race bikes have carbon forks. The roughness of the roads won't be a problem for the longevity of the bike. The main worry about carbon is that in a crash you might damage the frame more than you would an alu or steel frame. But the tube thickness on the lightest alu bikes is getting thin enough that you can have similar problems with alu.

Carbon bikes are supposed to be quite stiff, so you'd be all right there.


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