LAV_1972
06-05-02, 09:02 PM
I just had a bike salesman show me a MASI GRAN CORSA. This bike has an Aluminum Frame with Carbon Seat Stays. How durable would a frame like this be (relative to aluminum or steel alone)?
Road Cycling - Combination Aluminum/Carbon Frames
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velocipedio
06-06-02, 05:55 AM
Relative to steel? Well, steel is one of the most durable bike frame materials you can find, along with titanium. So I'd have to say "less durable."
The bonding between the CF parts and the aluminum parts is, of course, the weakest point in the frame. I'd argue that it would be the main point of failure in a catastrophic crash but, having said that, I haven't heard of this ever happening.
I doubt you'd have much to worry about, though you can be pretty sure an aluminum frame with a bonded CF seat stay will be more fragile than an all-aluminum bike, which will be more fragile than a steel bike.
The bonding between the CF parts and the aluminum parts is, of course, the weakest point in the frame. I'd argue that it would be the main point of failure in a catastrophic crash but, having said that, I haven't heard of this ever happening.
I doubt you'd have much to worry about, though you can be pretty sure an aluminum frame with a bonded CF seat stay will be more fragile than an all-aluminum bike, which will be more fragile than a steel bike.
usnagent007
06-06-02, 04:32 PM
about "durability":
whatever inferiority aluminum has to steel is meant to be compensated by having larger tubes, etc.
but, my understanding of aluminum is that it doesn't have a fatigue limit, that it begins fatigue right away...?
any frame builders out there to confirm or deny this?
whatever inferiority aluminum has to steel is meant to be compensated by having larger tubes, etc.
but, my understanding of aluminum is that it doesn't have a fatigue limit, that it begins fatigue right away...?
any frame builders out there to confirm or deny this?
usnagent007
06-06-02, 04:35 PM
and...also with regard to durability:
it seems like all the manufacturers now are jumping on the carbon seatstay bandwagon; why not wait and let them refine their product? (thinking of the campy carbon crank incidents)
it seems like all the manufacturers now are jumping on the carbon seatstay bandwagon; why not wait and let them refine their product? (thinking of the campy carbon crank incidents)