aluminium frames

[charlie]

Hi Got a couple of large bubbles on my aluminium frame. The
bike is now 5 years old. Please tell me, it is about to
crumble or is it nothing to worry about.

 

[Zog The Undenia]

[email protected] wrote:

> Hi Got a couple of large bubbles on my aluminium frame.
> The bike is now 5 years old. Please tell me, it is about
> to crumble or is it nothing to worry about.

Probably just salty water getting under the paint, oxidising
the alu and lifting the paint off. Bob Jackson in Leeds will
re-enamel alu frames - my Cannondale is beautiful now, and
the paint is much tougher than isocyanate 2-pack or whatever
it is 'Dale use at the factory (stove enamel is almost
unheard of in the States).

Cracks would be worrying, but not bubbles.

 

[charlie]

Thanks

On Sun, 07 Mar 2004 18:23:52 +0000, Zog The Undeniable
<[email protected]> wrote:

>[email protected] wrote:
>
>> Hi Got a couple of large bubbles on my aluminium frame.
>> The bike is now 5 years old. Please tell me, it is about
>> to crumble or is it nothing to worry about.
>
>Probably just salty water getting under the paint,
>oxidising the alu and lifting the paint off. Bob Jackson in
>Leeds will re-enamel alu frames - my Cannondale is
>beautiful now, and the paint is much tougher than
>isocyanate 2-pack or whatever it is 'Dale use at the
>factory (stove enamel is almost unheard of in the States).
>
>Cracks would be worrying, but not bubbles.

 

[Msa]

In article <[email protected]>,
[email protected] says...
> >Cracks would be worrying, but not bubbles.
>

But I'd get a 2nd opinion (lbs or similar) just in case.

--
Mark (MSA) This post is packaged by intellectual weight, not
volume. Some settling of contents may have occurred during
transmission

 

[Zog The Undenia]

MSA wrote:

> But I'd get a 2nd opinion (lbs or similar) just in case.

Personally I'd strip off the paint with Nitro-Mors and have
a look, as the finish sounds to be ruined anyway! I can
think of some LBSs who would seize the opportunity to sell a
carbon frame as the best solution ;-)

 

[Graham Bowers]

Zog The Undeniable wrote:
> MSA wrote:
>
>> But I'd get a 2nd opinion (lbs or similar) just in case.
>
>
> Personally I'd strip off the paint with Nitro-Mors and
> have a look, as the finish sounds to be ruined anyway! I
> can think of some LBSs who would seize the opportunity to
> sell a carbon frame as the best solution ;-)
I'd check on the can before applying nitromors to a non-
steel frame. Fairly aggressive stuff. Cheers Graham

 

[James Annan]

MSA wrote:

> In article <[email protected]>,
> [email protected] says...
>
>>>Cracks would be worrying, but not bubbles.
>>
>
> But I'd get a 2nd opinion (lbs or similar) just in case.
>

Ok, my opinion is also that a bit of bubbling under the
paint is nothing to worry about. Our Cannondale tandem has
been like that for years (except in our case it is a _lot_
of bubbling, and the paint has completely peeled off in a
few places). I once exchanged a couple of emails (or it may
even be on usenet) with some Cannondale tech guy who used to
be on usenet, who assured me it was merely cosmetic, and I
see no reason to doubt that.

James

 

[David E. Belche]

Graham Bowers <[email protected]> wrote in message news:<[email protected]>...

> I'd check on the can before applying nitromors to a non-
> steel frame. Fairly aggressive stuff.

I've used a DIY own-brand (Do-It-All, or Focus as they are
these days) paint stripper on non-ferrous stuff [1] before
now, and it came out fine. The paint remover in question was
a clear, jelly-like substance with dichloromethane as the
active ingredient, so this and similarly-labelled products
ought to be OK.

David E. Belcher

[1] Not bike frames, but Hornby-Dublo diecast model
locomotive bodies.