[TheForge] Aluminium

[David E. Smucker]

The way I remember them the Cannondale's are a 6000 series alloy.  Most 
likely 6061, but they might also be an auto alloy like 6013.  They would be 
heat-treated (solution heat treated after welding if I remember right). 
Cannondale had some early problems with frame movement in heat treat but 
learned how to deal with it.

At any rate you should not have any problems if you don't heat the frame. 
You should be able to use a real high quality auto clear coat if you want 
the bare metal look to show.  Just make sure you metal is clean clean clean. 
No finger prints or even hints of oil of any kind.  Without a primer, you 
may have retention problems, only way to know is to try it.

Dan Tull may have some ideas, he is a paint and aluminum guy in another 
life.

While I worked for Alcoa for 32 years and built racing bikes for fun -- I 
never build in aluminum -- always chrome moly tubing at the time.  My at the 
time, teenage son raced on one of my frames -- he still rides it and he is 
now, 37.

Dave Smucker

--------------------------------------------------
From: "Mark A. Pesetsky" <pesetsky at Princeton.EDU>
Sent: Tuesday, May 27, 2008 6:41 PM
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Subject: RE: [TheForge] Aluminium

> I am building a vintage CANNONDALE bike w/the newest latest in components. 
> Stripped the paint and going to do a 600 grit finish. Don't want it shiny, 
> want it w/that hand sanded matte look...
>
> ________________________________
>
> From: theforge-bounces at mailman.qth.net on behalf of Andrew Vida
> Sent: Tue 5/27/2008 5:52 PM
> To: Blacksmithing List Sponsored by ABANA
> Subject: Re: [TheForge] Aluminium
>
>
>
> UV for Al?  Why?
>
> Mark A. Pesetsky wrote:
>>
>>
>>
>> Any suggestions on the best sealing material w/UV protection for
>> aluminum?
>>
>> Thanks
>> Mark
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>
> --
>
>        -Andy V.
>
> no .sig
> go .fig
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