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Water In My Frame!(5 posts)

Water In My Frame!hfc
May 29, 2003 5:01 PM
I have a c-40 with Dura-Ace that I bought used a few months ago. I've gotten caught in the rain a couple of times recently and discovered water sloshing around inside when I went to hang the bike up after the ride. Where's the water getting in? I'm assuming the bike has a D/A BB and figure that is the most likely culprit. Could it be coming in through the seat-tube/post (carbon post by the way)interface? Do I need to grease the post anyway?
re: Water In My Frame!russw19
May 29, 2003 5:37 PM
First... you don't need to grease your seatpost. The reason you do it is so it won't bond to the frame. The metal won't bond to the carbon and greasing it will just make it more prone to slipping.

As for the water.. it could be getting in a bunch of places.. down your seat tube is the most likely place. If you ride in the rain, your rear wheel throws water up at your seat and your butt. It has a tendency to run back down the seat post and into the frame. I had a friend who used to use a Lizard Skin Headset seal (those little neoprene things) and wrap it around his post and seat tube.. he swore by it. It could be coming in from the headtube, but I doubt that, and it could be coming in thru your bottom bracket, but I don't think that is as likely as your seat tube. Anyways, if there is water sloshing in your frame, you need to drain it and overhaul your BB anyways. Make sure to deliberately use too much grease when you rebuild your BB. Use some good waterproof grease like Phil Wood or Bullshot. Put too much in and the rest will help to seal your bottom bracket area. Make sure the plastic seal between the bearings that fits over the spindle is in place and doesn't have holes in it. After you get your frame dried out, you can look to see if there are cracks in the clearcoat or carbon where water is coming thru... Good luck.

re: Water In My Frame!curlybike
May 29, 2003 6:46 PM
Check to see if there is a drain hole in the bottom of the BB shell. If so it may be plugged up. If there is not one you can drill a hole through the center of the screw that holds the cable guide on, that's assuming that you have one of these screws. You should contact Trailtir about adding a hole to the shell if there is no other alternative. As suggested, the water is coming from the seat post-seattube joint. That is why most of the high quality steel bikes had cutouts in the BB shell.
I just removed the screw.MR_GRUMPY
May 29, 2003 7:05 PM
If the plastic cable guide won't stay put without the screw, glue it in place with something that won't hold it forever.
re: Water In My Frame!hfc
May 30, 2003 7:22 PM
Thanks to you all for the help! nm