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Dip cleaning
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Posts: 7Registered: Aug 2002
oldfart3
Junior Member


Monday, August 05, 2002 7:00 AM

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I'm in the early stages of a ground up, nut and bold restoration of Lusso #4437, and am trying to get all the old paint, Bondo, undercoat, and rust removed. I've heard different opinions on whether or not dipping risks corroding the interior of the main frame tubes.
Does anybody have any experience, opinions, or guidance on the subject, or any leads on a facility in the western U. S. that performs such work?

John Tarr
Oldfart3


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Posts: 1202Registered: Dec 2001
BillBadurski
FCA Technical Chairman


Saturday, August 17, 2002 6:32 AM

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I'm not an expert on the subject of dipping, but any openings in the frame will admit the solution. After that, unless you submerge the frame in a paint solution, I'd expect that you'll have bare metal inside the frame tubing which could cause problems with rusting from within later. The old sanding or sandblasting practice is probably safer.

-------------------------
William V. Badurski
FCA Technical Chairman


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Posts: 7Registered: Dec 2001
pgilpat
Administrator


Wednesday, August 21, 2002 5:08 PM

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I completely concur, previously owning a car that rusted from the inside out from being dipped and sealing up the expansion / drain holes.

Media blasting is a much wiser choice.

Paul


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Posts: 1From: LoxahatcheeRegistered: Sep 2002
AndyI
Junior Member


Sunday, September 29, 2002 8:29 PM

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This is my first posting, and I hope I can help with it. Dipping is by FAR the best way to insure total rust removal. In fact, it is the only possible way to remove it from crevices, between panels, etc. - not to mention the interior of those tubes. The concern about new rust inside frame tubes is valid, but has an easy solution called "Tube Seal", which is line oil. It's been used to rustproof aircraft frames forever, and has the uncanny ability to migrate to the entire surface, including "climbing" up verticals. A quart will do several cars (or small airplanes)$14.95 from "Aircraftspruce.com" for one. Linseed oil works too, but won't migrate like line oil does.

Prior to dipping, drill a small (1/8" is fine) hole in ALL tubes, as near the highest point as possible. This is both to help the dipping solution enter and derust the interior of the tubes, as well as to get the line oil in later. After the dipping, squirt a small quantity - doesn't take much - into each tube. An insulin syringe works fine. The line oil will take care of everything from there. I leave it in and pop-rivet or weld the holes.

I've built and restored several tube-frame airplanes, and restored a fair number of cars, and my only regret is I didn't discover dipping sooner.

Best regards and good luck!
Andy Illes


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Posts: 7Registered: Aug 2002
oldfart3
Junior Member


Wednesday, October 02, 2002 5:32 AM

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Andy I

Thanx for the info. Do you have any advice on the facility you use(d) for dipping?

John Tarr


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Posts: 7Registered: Aug 2002
oldfart3
Junior Member


Wednesday, October 09, 2002 6:32 PM

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Paul - do you have any recommendations for a blasting facility in Colorado?

John Tarr




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Posts: 22Registered: Nov 2001
Administrator
Administrator


Thursday, October 10, 2002 9:55 PM

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My memory fails me, but there is a shop on N. Washington that does media blasting... I'll try to remember.

Paul




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