I'll stick some photos up asap, to supplement my dodgy description, but essentially I want to whip the pedal assembles off my 1970's Carlton Corsa, leaving the crank arms bare. There's what looks like a rivet on the inner face of the crank with an indentation at the 12 o'clock and 6 o'clock positions on the rim and then a short metal cylinder between the outer face of the crank arm and the inner end of the pedal. This has two flat faces on it that looks like it's meant to take a wrench of some kind and unscrew. If anyone knows which of these I should be attacking to get the pedals out, (or indeed, if it's something else entirely...) I'd love to hear from you.