removing rust from chromolly (sp?) frame
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removing rust from chromolly (sp?) frame
I just bought a schwinn traveler which has some rust spots. I found the following online and wonder if its safe to use on bikes and if it really works?
Turtle Wax Chrome polish and rust remover T280RA- ReadReviews onTurtle Wax #T280RA
thx!
Turtle Wax Chrome polish and rust remover T280RA- ReadReviews onTurtle Wax #T280RA
thx!
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Use aluminum foil wadded up with water. It works better for removing rust in my experience.
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Bar Keepers Friend works well. Make a paste and let it sit. It contains oxalic acid so keep away from alloy. Any time you polish, avoid scratching and use the most minimal abrasion necessary. Simichrome polish is another one I like on restorations.
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For what it's worth, chromoly isn't chrome. Unless it's chrome-plated chromoly.
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#9
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I just bought a schwinn traveler which has some rust spots. I found the following online and wonder if its safe to use on bikes and if it really works?
Turtle Wax Chrome polish and rust remover T280RA- ReadReviews onTurtle Wax #T280RA
thx!
Turtle Wax Chrome polish and rust remover T280RA- ReadReviews onTurtle Wax #T280RA
thx!
I don't know the product, but if it's like Naval Jelly, I would give it a pass. That stuff uses oxalic acid. It removes the oxygen from the rust really well, but you are left with bright metal with lumps and contours just like the original rust.
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Assuming you have a chrome-moly (moly is a contraction of molybdenum) frame with high tensile lugs, I'd suggest Evaporust. You need to submerge the part in this liquid product, but you can wrap a piece of a microfiber cloth around the rust and have the cloth dip into a dish with the stuff. Baste with the liquid occasionally. If you are just doing the BB or head tube, you may be able to suspend the frame in a small bowl of the stuff. It works.
But you will be left with a bit of exposed metal, so you may wish to sand down to metal and reprime and repaint, feathering the paint edge each coat. A lot of work.
I've used chrome polish (forget which brand) to remove rust from a steel stem and crank (for my son's old Red Line that I sold). That worked great. If you do end up with scratched chrome, you may wish to try Simichrome, a good metal polish.
But you will be left with a bit of exposed metal, so you may wish to sand down to metal and reprime and repaint, feathering the paint edge each coat. A lot of work.
I've used chrome polish (forget which brand) to remove rust from a steel stem and crank (for my son's old Red Line that I sold). That worked great. If you do end up with scratched chrome, you may wish to try Simichrome, a good metal polish.
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Good golly, Chromolly! (Sorry. I couldn't resist.)
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How's that? The rust may have caused flaking of your chrome but that wouldn't be due to the aluminum but the existing corrosion.
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Ok well alloy means any metal made up of two or more metals. Steel is an alloy. Alloy does not imply Aluminum.
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It actually scratched up the one side of the fork that I tried it on. Maybe the Peugeot had cheap chrome?? If you search around you'll find others have had it happen too. I get a lot of great tips here but I will never risk this one again on any bike I care about.
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My failure with foil was on a chrome fork not a cromolly frame. Sorry for any confusion caused by my confusion.
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Try it on some worthless steel and see if you can scratch it with aluminum.
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Well it's physically impossible for aluminum to scratch steel, chromed or not. Literally physically impossible due to physics. But what can happen is that harder debris is on the item or the foil and then when you rub you move that around and scratch the surface with the hard debris. Glass, sand, quartz, and many rocks can scratch steel.
Try it on some worthless steel and see if you can scratch it with aluminum.
Try it on some worthless steel and see if you can scratch it with aluminum.
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I don't doubt that you had an issue but the explanation, though we can never know the true cause, can't be aluminum metal scratching chromed steel because again it's physics. Maybe some chrome has microscopic imperfections , I don't know. But lots of people use aluminum not just lovers of vintage bikes.
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No matter what method you settle on it must be accompanied by a healthy dose of....
"ELBOW GREASE"
Wish I could buy some at the store...
"ELBOW GREASE"
Wish I could buy some at the store...
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Not necessarily so. An oxalic acid bath will remove rust with zero elbow grease. Same goes for products like Evapo-Rust. The only real labor required is if you need to disassemble the item before dunking it into the liquid. Beyond that, the whole process is submerge for a period of time, rinse, and dry. No abrasives, no scratching, no scrubbing, no little nooks you can't get into.