wheel and de railer help!

He all, i have these wheels -
Also the wheels are Rigida AS23x, 700c, 17x 622, DIN ETRO
Just wondering, is 700c the size ?
In regards to the derailer, its stuck on the frame and i cant get it off, and can see now way to get it off.
Can i fit a new one?
I have a peugeot Etoile, straight out the 80's
Also the wheels are Rigida AS23x, 700c, 17x 622, DIN ETRO
Just wondering, is 700c the size ?
In regards to the derailer, its stuck on the frame and i cant get it off, and can see now way to get it off.
Can i fit a new one?
I have a peugeot Etoile, straight out the 80's
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A quick google suggests this is a Sachs mech and forums such as retrobike.co.uk feature that question on removal with sadly no answer...
but, i gather from a quick read, that the bike came fitted with either 12-speed Sach or early 12-speed Shimano mechs, so there is hope!
They have taken the rear derailer off and the crank for me, for free as he liked the colours of the bike..
Thanks for the help all.