Hi All,

Greeting from Australia. I’ve recently acquired a nice Eddy Merckx Professional which I have just reassembled.

im having an isssue with the rear derailleur - when I shift up from the small rear cog it always springs back, normally to the second smallest cog. Everything seems in order with the reassembly but I cannot figure this out.

Its an early 1980s version, I have attached a photo from the rear.

Any ideas please?

Thanks, Chris



Rear photo