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Help Needed: Paint Popping Up Around Top Tube Cable Guide!(10 posts)

Help Needed: Paint Popping Up Around Top Tube Cable Guide!blackjava
Jan 31, 2003 5:14 PM
Recently I have noticed the paint starting to pop up around the top tube cable guides of my Colnago VIP frame. (Will take some pics and post them later.) What is the reason for this? The frame is just over a year old. What can I do about this? Any advice welcome.
Best Regards.
re: Help Needed: Paint Popping Up Around Top Tube Cable Guide!atpjunkie
Jan 31, 2003 6:58 PM
most likely from cable rub. best bet is tiny strip of mylar tape between cable and tube. it just happens, pretty common.
re: Help Needed: Paint Popping Up Around Top Tube Cable Guide!micha
Jan 31, 2003 7:02 PM
Most common cause is rider sweat allowed to remain in those little nooks and crannies in and around the guides. Especially true if you ride indoors a lot.

The solution is a warm and soapy water wash after every sweaty ride, then a gentle rinse.
re: Help Needed: Paint Popping Up Around Top Tube Cable Guide!blackjava
Feb 1, 2003 4:27 AM
Hi Micha, I think you are absolutely right. I have attached a pic of the problem area. So what can I do about this problem? Any ideas?
Best Regards.
re: Help Needed: Paint Popping Up Around Top Tube Cable Guide!micha
Feb 1, 2003 6:17 PM
Agree with Kerry - go for the warranty.

What usually happens is that the top tube gets drilled for cable guide fasteners after the priming. The bit chews up the primer a bit around the edges of the hole, allowing corrosive fluids (sweat, road salt, gatoraide) to get between the bare metal and the primer.

Even if they prime after the drilling, there's still bare metal where the drill went through the tube. Spraying doesn't reach the inside of the holes. The traditional way to deal with this is to dip a small artist's brush into some primer and go around the inside of each hole with it. I doubt if anyone still does that, but they should.

I'm writing all this detail in case you're going for warranty and they'll try to deny it. Judging from your pics, I bet the inside of the guide fastener holes are bare metal - never seen a drop primer or paint.
Problem Area Pic: Help Needed!blackjava
Feb 1, 2003 4:30 AM
Warranty?seyboro
Feb 1, 2003 7:43 AM
I had the same problem in the same area on one of my older CAAD3 frames. My LBS sent the frame back to Cannondale and they replaced it with a new one(...actually, I ended up with something of a 'custom' look, as the frame got a '98 paint job, but with '99 quadrap-decals). The reason given was rider sweat.
It's corrosion under the paintKerry
Feb 1, 2003 8:46 AM
Based on your pictures, it's a straightforward case of corrosion under the paint. My Cannondale commuter started doing this after about 5 years of year round commuting (lots of salt in the winter!). Now, after 8 years/12K miles, the paint is bubbled from the seat cluster down to where the seat stays separate from the mono stay. Those who say that Al frames don't corrode are truly confused! Starting to do this after one year sure sounds like a warranty situation to me.
re: Help Needed: Paint Popping Up Around Top Tube Cable Guide!maximum15
Feb 2, 2003 3:43 PM
Probably corrosion due to sweat and poor surface preparation or damage to surface after prep. I have a Trek 2300 doing the same thing -- well actually much worse now. Most of the paint is gone around both top tube guides and a significant portion is missing around the bottom bracket. I would think you could get warranty replanement.
Thanks for all the advice!blackjava
Feb 2, 2003 4:53 PM
Hi Guys,
Thanks for all the advice. Appreciate it. Will certainly check on the possibility of a warranty replacement.