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trek C/F frames(7 posts)

trek C/F framesSpiderman
May 7, 2001 5:07 PM
Whats the deal with the Trek C/F frames seperating at the lugs. Do the tubes only seperate from metal lugs? or would the C/F tubes seperate from carbon fiber also?
re: trek C/F framesgrz mnky
May 7, 2001 5:12 PM
The OCLV frames don't seem to have the separation problem that may be encountered with metal lugs. It is inherently more challenging (but not impossible by any means) to bond the dissimilar materials. Epoxy bonds really well to itself while bonding to metal requires more care. You also have to account for dissimilar thermal expansion between the materials. Something that some of the CF frame makers tout is an advantage of titainium over aluminum.

You really shouldn't be worrying about bond failures if you're buying a new frame with full warranty. If this isn't your case then it's a matter of buyer beware.
re: AlsoKnow it All
May 7, 2001 7:14 PM days past, CF tubes and aluminum lugs failed due to galvanic corrosion.Doesn't happen any more,as they have learned from their mistakes.Many CF forks have several Carbon/aluminum bonds.
take a look at Calfee carbon bikescarbonguy
May 7, 2001 7:24 PM

I think the calfee BLOWS away the Trek.
Lots of people right off the calfee because they dont have a experience with them. I just got a "Luna" and its the sweetest bike I have ever riden!
saw calfee at LA bike show...Made in Taiwan
May 7, 2001 10:16 PM
awesome looking frame, dunno how they ride, as i don't own one, but they look purddy
take a look at Calfee carbon bikesgrz mnky
May 8, 2001 11:06 AM
The difference being that the Calfee "lugs" are formed in the mold that puts the pre made tubes together. Kestrel is a monocoque construction and the whole frame is formed at once. Ultimately it comes down to how well the layup work is done - voids and air bubbles can be left in which is a weakness. The Trek guys used to tote around a cut up OCLV lug and a cut up Kestrel joint to show the difference.

I don't think that one can say at point blank that one is vastly superior to the other. I've riden all of them (one of the advantages of living around where they are made) and they each have their own "personality". The Calfee Tetra Pro is "silly light"!
take a look at Calfee carbon bikescarbonguy
May 8, 2001 10:09 PM
Only the Luna pro uses pre made lugs. The Tetra pro is hand wrapped and hand finished lugs making it easy to make full custom. Calfee also had his new Dragon fly frame at the L.A. bike expo. Complete Dura-ace, carbon tubulars 54cm under 14lbs!