Caro Sergio:
<< Why haven't builders, since they have not as far as I know, reinforced glued carbon-aluminum or carbon-carbon joints with pins? After all, it is a well known fact that 'superglue' has often not been so SUPER!
P.s. Please, don't tell me that by drilling a tiny hole I would destroy fibers so badly as to cause even worse failures. I just don't believe it. >>
I don't think that "pins" would hurt a carbon frame or aluminum frame, providing that adequate bonding agent (glue in these cases) was present in the joint.
BUT (and this makes this message vintage pertinent & On Topic) those pins really don't reinforce anything, in steel or any other frame building material. They just keep the tubes in their appropriate place until the actual bonding (brazing, gluing or whatever) takes place.
After their job is done, the pins are redundant and hence Angel's question asking if they were removed by builders after the building process.
Dale Brown Greensboro, NC USA
-----Original Message----- From: Sergio Servadio <servadio@df.unipi.it> To: oroboyz@aol.com Cc: classicrendezvous@bikelist.org Sent: Wed, 08 Mar 2006 18:08:12 +0100 Subject: Re: [CR]More about pins in frames
Maestro Richard Sachs correctly reminds me & I paste below:
> > "Pins are not the surrogate for fixtures unless you go back to the > Drysdale era!!! > Builders pin frames in sophisticated fixtures and then braze free. ...
At the risk of being scolded for living in Modern Ages here is a question about pins that has been bugging me for a long time . Why haven't builders, since they have not as far as I know, reinforced glued carbon-aluminum or carbon-carbon joints with pins? After all, it is a well known fact that 'superglue' has often not been so SUPER!
Sergio Pisa
P.s. Please, don't tell me that by drilling a tiny hole I would
destroy fibers so badly
as to cause even worse failures. I just don't believe it.
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