>
> > My father just gave me a box of old Cox .049 engines that we flew with
> > when I was a kid. I think they are 1970's vintage Babe Bees. Two
> > with props turn over, but have fairly low compression. Two without
> > props are sieved up. I suspect that the siezed engines just have fuel
> > or oil gumming them up since he wouldn't have kept dead engines.
> > These have been stored in a cigar box without any special care for
> > probably about 20 years. (We moved on from 1/2A and flew .15-.35
> > before I moved out on my own and stopped flying.)
> >
> > What can I do to clean these up and get them running again? I've read
> > old threads via google about heating in anti-freeze, but I'd rather
> > not do that since I have small children around and live in an
> > apartment.
> >
> > I've gotten the two sieved engines partially apart. I can get the
> > cylinder off one, but the piston is blocking the ports on the other so
> > that I can't get the wrench in securely.
> >
> > Would soaking in isopropyl alcohol do any good? How about acetone?
> > I'd probably want to leave acetone as a last resort since it also has
> > a fume problem.
> >
>
>
> Buy a jug of fuel, put some in an old pickle jar, and add the engines.
> Make sure they are submerged. Leave them for a week or two, then take
> them apart. When you put them back together use after run oil from the
> hobby store to lubricate and rust-proof them. You will also want to be
> careful with your tank-to-crankcase gasket. If this gets torn you will
> have to get a new one or the engine won't run.