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Carbon bars and seatposts

Old 12-04-05, 06:21 PM
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jonbth
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Carbon bars and seatposts

I recently bought a Trek 7.5 FX disc and am very happy with it. I'm used to riding a Trek 7200 with suspension seatposts and forks. The problem is I feel all the bumps with my new bike and was wondering if a carbon handlebar and seatpost would provide a little more cushioning than the the steel ones I have now. I don't really care about saving weight.
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Old 12-04-05, 06:36 PM
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curt in denver
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Originally Posted by jonbth
I recently bought a Trek 7.5 FX disc and am very happy with it. I'm used to riding a Trek 7200 with suspension seatposts and forks. The problem is I feel all the bumps with my new bike and was wondering if a carbon handlebar and seatpost would provide a little more cushioning than the the steel ones I have now. I don't really care about saving weight.
I put a carbon seatpost on my 7300fx and did notice quite a difference.

Last edited by curt in denver; 12-04-05 at 09:03 PM.
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Old 12-04-05, 08:36 PM
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TomM
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I have a carbon seatpost on my Trek 5000 and still feel the bumps in the road.
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Old 12-04-05, 10:48 PM
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I doubt you're gonna notice any difference with a carbon-seatpost. The force is transmitted along the stiff axis of the tube, so there's not gonna be any flex. Better bet would be a gel seat-cover.

Also get bigger tyres and use lower-pressure. There's more flex in the tyres than any other part on the bike.
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Old 12-04-05, 10:51 PM
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Yes, carbon bars/seatpost will be of some help, but not a miracle cure.
A sprung saddle or shock seatpost would be a better cure. Also there used to be shock absorbing stems a few years back.
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Old 12-05-05, 02:01 AM
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jonbth
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I feel it more in my hands and arms. The seat isn't that uncomfortable.
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Old 12-05-05, 03:16 AM
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Bend your elbows. Don't have a death-grip with your hands. In fact, you should be able to ride with all your fingers free and wiggling. Add gel gloves..
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Old 12-05-05, 04:00 AM
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Trek/Bontrager makes some handlebar ends called Buzzkill that are supposed to plug into the end of the bars to absorb shock. However they are sold for road bikes, dunno if they will work on hybrid/fitness bikes.

If cash permits you down the road, you might try seeing what a 7.7fx set of forks will cost. Those forks have the buzzkill inserts in them. I have not seen a 7.7fx in a store yet to see the effects.
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Old 12-05-05, 11:53 AM
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jonbth
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Originally Posted by EricDJ
Trek/Bontrager makes some handlebar ends called Buzzkill that are supposed to plug into the end of the bars to absorb shock. However they are sold for road bikes, dunno if they will work on hybrid/fitness bikes.

If cash permits you down the road, you might try seeing what a 7.7fx set of forks will cost. Those forks have the buzzkill inserts in them. I have not seen a 7.7fx in a store yet to see the effects.
I have disc brakes. I don't think the 7.7 FX forks will work. I'll try gel gloves and maybe a riser bar to get some of my weight off my hands.
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Old 12-05-05, 12:18 PM
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Depends in part on where you're feeling the 'bumps!' I bought a Trek7500fxdisc last year -- lasted three days with it -- same problem. Not the rear end, but I was using my carbon post. This will make a substantial difference (a real carbon post, not carbon-wrapped al.). Post size on your bike is standard 27.2, so no fit problem. My main problem was the front. Reason: your bike has straight-blade aluminum 'cross forks w/disc mount. Just about the worst possible forks for comfort! Carbon bars would help a LITTLE, but the real answer is carbon forks. At the time I had the bike, nothing easily available or I would probably have stayed with it/made the change. But - lo and behold, check Bontrager's web-site; I'm pretty sure that they are releasing a 400 mm carbon disc mount road fork; should be a direct swap/problem (probably) solved. Well worth it if you otherwise love the bike; those stock forks are just about the weakest link on that bike. Cheers.
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