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Carbon fibre frames(10 posts)

Carbon fibre framesKarl
Jul 8, 2001 8:42 PM
What's the full story on CF frames? I've heard they don't last long and are fairly flexible. Is this true? A company called Leader has em for sale fairly cheap on Ebay and it's gotten me thinking.

Well Karl ...pmf
Jul 8, 2001 9:43 PM
They're just like anything else, I'd guess. Some are great and others suck. My experience is with a Kestrel 200 Sci I got 7 years ago. Great bike, nice ride. To this day, its a good bike, I've ridden the hell out of it. Its almost as stiff as my Litespeed Ultimate which some guys compain is too stiff. I like the LS and the Kestrel very much. I recently bought a Colnago C-40 2001 frame. It has a similar ride to the Kestrel, but is much lighter (much of this is due the the headset and fork ... same components).

Personally, I like the ride of carbon. Its plush. Some say its wooden, but for a long ride, I love it.

I have never heard of the frame maker you mention. Like anything, its how its made. Would you buy a light weight AL frame frome them? All carbon bikes (or Al or ti, etc) are not the same. The question you ask cannot be answered. Carbon frames, like any other material, can be either really good, or not so good. I spent all weekend on my C-40. It was really good.
An aside,TJeanloz
Jul 9, 2001 11:31 AM
I was pretty bored this weekend, and strolled into my neighborhood Performance Bicycle Shop to check things out- I usually go in every year or so. I sat admiring the Kestrels- back when I started racing, that was the bike that I really wanted but couldn't have. After an hour or so, a sales person asked if I needed any help. I said: "Bikes made out of carbon fiber, what will they think of next?" And she told me they had been around for a while and rode really well. To follow up, I looked down my nose at her and said: "But real racers ride them, and no big races have been won on Carbon, so it couldn't be good." (knowing full well that the last two tours have been won on carbon bikes, and that the C-40 may be the winningest frame ever). The salesperson agreed that carbon fiber had not proven itself on the international stage, but contended that it was a 'pretty good' material regardless. Now I know why Performance has such a bad rap.
re: Carbon fibre framesLC
Jul 8, 2001 9:46 PM
I have seen a lot of CF frames, but never one that looked welded. I can't imagine how or why they did that? It says the rear triangle is aluminum, but the front is CF, but alot of bikes are the opposite now.

CF can chip, but it is generally fairly stiff ride with good vibration dampening.
re: My take.....Rusty Coggs
Jul 9, 2001 7:00 AM
....from looking at the pictures is that its more aluminum than CF. the downtube and toptube are CF tubes that are bonded into aluminum tubes which are then tig welded.The headtube and seattube are aluminum as are the stays. Diamondback did a similar job on its 'welded CF' frames, except that they used steel rather than aluminum. This is just a cheap way to get some "CF" into a frame. Probably a case of getting what you pay for,IMHO.
Jul 9, 2001 9:24 AM
I'd save my bucks for a more expensive carbon frame if I was going to get carbon, and I am! I'm getting a Calfee Tandem. I personally think that right now, cheap carbon frames are just that, CHEAP!
Well made (and it takes time, effort and technology, which aren't cheap) carbon frames are great, durable, and come with excellent warranties. (25 years for Calfee, Trek is also good).
The better carbon frames weave the carbon is ways that yield stiffness in certain directions and yield in other directions, which is much more difficult to impossible to achieve in other materials.
I understand the "wooden" description that's used often, to describe the C.F. ride. Unfortunately most people see this as a negative connotation. The people (including myself) who like the ride of C.F. undertand that wood can absorb vibration. This can be a very positive quality when you're on rough roads for 50-100+ miles at a time.
Check these out insteadDave Hickey
Jul 9, 2001 12:01 PM
If I remember correctly, The Leader road frames doesn't have a replacable rear derailluer hanger. Check out the KHS Aero Carbon frame. It is the same frame as the old LOOK KG286. You can buy a frame and fork for under $600. Also Supergo has their new Access .carbon frame for under $600. This frame comes with fork and seat post
Check these out insteadLC
Jul 9, 2001 4:18 PM
Yes those are great frames, I got one myself! Thanks, I always wondered which Look frame was the same as the KHS. How much did the KG286 go for?
Check these out insteadDave Hickey
Jul 9, 2001 6:21 PM
I believe it went for $1800 to $2000 in 1997
re: Carbon fibre framesMikeC
Jul 9, 2001 12:53 PM
The real benefits of carbon fibre are all about engineering. The nature of a fabricating a cf bike enables the designer to tune the ride, strength, and handling characteristics of a bike more precisely than with any other material. So the real question is more "what are the intended performance criteria, and how confident are you in the abilities of this frame's designers and engineers?" than "what do you think of carbon fibre?"