Bicycle Mechanics - interior frame rust

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA

View Full Version : interior frame rust

enchantingwiz
12-11-04, 12:44 PM
anyone have any good tricks to deal with interior frame rust? just got a used pompino, but the previous owner seems to have had some aversion to keeping screws in the braze-ons and performing general maintenance. has anyone used rust-oleum's rust reformer on the inside of a frame? or know if frame saver stops rust in addition to inhibiting it?

mtbikerinpa
12-12-04, 06:09 PM
What frame material is somewhat important. I just had to replace a seatstay on my cromoly Giant sedona(92) and it was spotless. Thats after 10 yrs in salt air and 7 yrs racing. Secret: Extend/Rust Reformer in liberal quantity. To apply for best results, first let the frame sit in a warm/hot area to heat up, then shoot a light ammount of WD40 in the lower areas to remove moisture. Let it dry out thoroughly. Then apply the rust treatment with the supplied straw through the frame drains. more is better. Slosh it around for several minutes for even coverage. Only work it one section at a time and do keep in mind it is potentially messy. Once that process is complete, let it dry in the heat for a few hours and you should be good for another 20 yrs.
sydney
12-12-04, 06:13 PM
What frame material is somewhat important. I believe steel is the only one with a rust issue.

mtbikerinpa
12-12-04, 06:18 PM
Clarification:
Cromo or mild steel.
Cromo is oodles more rust resistant than mild. Mild can rust out in a matter of a few short seasons untreated. Both however require treatment in the long run.
Chongo
12-12-04, 07:09 PM
I think J.P. Weigle has a rust treatment. I used to fill the tubes with motor oil and let it drain out. That's if your frame has those little gas expansion holes in the tubes. Like Mtbikerinap suggests, you might want to wash any loose rust particles out with WD-40.
mtbikerinpa
12-13-04, 05:33 PM
The only thing to watch for with the oil in the tubes method is if you have disc brakes. The oil method has been used to much success in the machinery my boss has, such as a 1976 Jeep plowtruck. In Aviation, (my day job) they use cromoly extensively in older planes and the old standby is linseed oil. It is marginally thiner than oil, but it is tacky and tends to stick better. But keep in mind it is sticky, and stains clothing if treated wrong.