Raleigh Grand Prix

[doallyoucan2004]

Hey, I have a similar model bike that was my father's and am in the process of restoring it! The cotter pins are just really stuck! Those are the things that hold the crank arm on. If you've already removed those then you've already won half the war. Try some WD-40 around where the crank arms meet the main shaft and then try backing it off with a few taps with a hammer padding the crank arm with a towel or wood so you don't dent of damage it. I'll post some of my project pics soon.

[doallyoucan2004]

YES! Definitely do not skimp on the lube! When I first half-assed this bike restore job I used normal heavy duty mechanical/auto grease on all the bearing.
WHAT A MISTAKE!
During this last rebuild I went to the LBS (local bike shop) and got a high quality bicycle grease and what a world of difference it made!