Rat Bikes! Pub Bikes Beaters! Frankenbikes!

you can just rattle can it with rustoleum flat black primer. it will stick to the rust quite well.

thing people always forget though is that the inside of the bike after a few years is as rusty as can be.

if that bothers you then get frame treatment.

I do that to all my frames. Not out of caution, just out of care.

The main issue for me is that my daily bike tends to live in the back yard and the potting shed is for projects and weekend bikes...

I have treated the insides of other bikes with framesaver and also linseed oil, the only reason I didn't bother with it on this particular frame was that I was thinking of plating it... If not I will do a framesaver job and maybe some rustoleum primer on the rusty bits.... Until I make my mind up I'm keeping it in the potting shed and riding another bike everyday!