-----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Mark Langford Sent: Saturday, June 28, 2003 10:12 AM To: KR builders and pilots Subject: KR>chemical corrosion coating for 4130 steel? Mark, I've used alodine (1204 I think, I'll double check). I used it to treat some torx bits that started rusting as well as steel hardware, I don't think it's hard to find but I don't remember where I got my bottle. You do want to clean it real well first and it will give it a flat black finish otherwise it comes out brown.
Dave McKelvey Grapevine TX Some of you guys might know the answer to this, and since it's been quiet I'll throw this out. My flap torque tube is a piece of .75" 4130 steel tubing that extends from one end of the stub wing to the other, right through the cockpit, where I have an RV flap motor attached to it by way of a clamp-on bellcrank (see http://home.hiwaay.net/~langford/03060120.jpg ). I got smart a while back and painted it along with some other stuff, but the fit was so tight on the holes that there's no way it'll fit back in the same holes, and enlarging them would be very tough. Is there some thin chemical conversion coating that I can apply to the new bare one that bought that will keep it from rusting, while not adding a bunch to the outside diameter? I even thought about waxing it, but if it doesn't work I'll have to take the wings off to try something else, which sounds painful. _______________________________________________ see KRnet list details at http://www.krnet.org/instructions.html
