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Old 09-25-07, 11:46 AM   #1
jignall
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Question on Trek 520 frame rust

I just completed a tour of Italy and the Trek 520 did great. Just about the only glitch was it rained the one night we were required to leave the bike outdoors and the bike took on a lot of water. When I disassembled my bike, I noticed there was some rust on the seatpost/inside the seattube. Any insight on this? Should I be concerned/is there anything I can really do now? Should I try and clean the seattube somehow before reinserting the seatpost?

Thanks.

Jeff
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Old 09-26-07, 10:52 AM   #2
MichaelW
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You dont want to leave water swilling around inside your frame or it will rust at the lowest point. You can get some special waxy stuff, Weigle Framesaver which probably doent mix well with my treatments: I find that a generous squirt of WD40 into every tube (via the small vent holes if there is no opening) does the trick. You can swab out the seat-tube with an oily cloth to remove rust.
When you have all the water out, thinly smear the seatpost with grease.
Shimano style cartridge bottom bracket units are immune to any stuff inside the tubing: oil or water. Other styles of BB do have bearings exposed to the inside which can get contaminated by water or wd40.
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Old 09-26-07, 03:33 PM   #3
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Quote:
Originally Posted by MichaelW View Post
You dont want to leave water swilling around inside your frame or it will rust at the lowest point. You can get some special waxy stuff, Weigle Framesaver which probably doent mix well with my treatments: I find that a generous squirt of WD40 into every tube (via the small vent holes if there is no opening) does the trick. You can swab out the seat-tube with an oily cloth to remove rust.
When you have all the water out, thinly smear the seatpost with grease.
Shimano style cartridge bottom bracket units are immune to any stuff inside the tubing: oil or water. Other styles of BB do have bearings exposed to the inside which can get contaminated by water or wd40.
Good answers.

Might pop the seat post out & flip the bike over to see if any water drains out.
Oily rag or rubbing steel wool inside the seat tube will remove surface rust. I also keep a spray can of white lithium grease handy while working on the bike, used to use it in tube form but can't find it locally anymore.
I too have the sealed bearings.
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