Green QB with a funny paint crack on the top tube:
http://www.flickr.com/photos/cyclotourist/3724839654/

Just started developing sometime this Spring after having the bike for
several years.  No crashes, hard hits, just regular riding (including
trails, potholes and curbs, but never hitting them hard).  I ride pretty
lightly, so don't think it's been damaged.

Anyone?

DE

On Wed, Jul 15, 2009 at 12:57 PM, R Gonet <[email protected]>wrote:

>
> Mine is orange and it, too, has such a gap between the lug and
> downtube.  Actually, it looks like a flaw in the brazing.  I filled it
> with clear nail polish to keep it from collecting water and
> corroding.  The paint job on this bike is very thin, so that the edges
> of the lugs are darker because of less paint, and some areas are
> darker than others, presumably where the paint is thinner.  I got this
> bike used and it rides well, but had I purchased it new for full
> price, I would have returned it.  I have a Hilsen with a nice paint
> job and there is no comparison.  The paint on the QB is not great
> advertising for Riv bikes.
>
> On Jul 15, 12:10 pm, Esteban <[email protected]> wrote:
> > My QB (orange - got it used) has a little paint gap in between the lug
> > and downtube -- it looks like a paint imperfection to me and I've
> > never worried about it.  I'll post a photo if I get around to it.
> >
> > Esteban
> > San Diego, Calif.
> >
> > On Jul 15, 8:10 am, Jim Thill - Hiawatha Cyclery <[email protected]>
> > wrote:
> >
> >
> >
> > > I've seen frames crack there, even when they haven't been crashed. Any
> > > lug area can be overheated and weakened during brazing if the person
> > > doing the brazing isn't careful. The lug-edge is a stress riser, and
> > > if the metal is brittle from overheating, it may not take much out-of-
> > > the-ordinary stress (heavier rider, bumpy roads, riding off a curb,
> > > etc) to start some cracks forming. Often these cracked frames are
> > > ridden for 20+ years before the problem becomes obvious, but it would
> > > make me nervous every time I went for a ride.
> >
> > > On Jul 14, 7:16 pm, Kelly <[email protected]> wrote:
> >
> > > > I bought my new Quickbeam several weeks ago and I love it.  However,
> > > > while building it up I noticed a few hairline cracks in the paint
> > > > under the top head lug.  This is weird, as the rest of the bike is in
> > > > perfect condition.  The cracks are raised from the surface of the
> > > > paint and are like little ridges.  So the question, should I be
> > > > worried?
> >
> > > > Here is a pic:
> >
> > > >http://tiny.cc/CCrye
> >
> > > > or here:
> >
> > > >
> http://www.flickr.com/photos/31296...@n07/3722235822/in/set-721576196...
> >
> > > > You can also see some other pictures of the completed bike.
> >
> > > > Thanks, Kelly.
> >
>


-- 
Cheers,
David
Redlands, CA

"Bicycling is a big part of the future. It has to be. There is something
wrong with a society that drives a car to workout in a gym."  ~Bill Nye,
scientist guy

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