Hello everyone (first post - yeay),
I have seen many forums posts that the simplex dropout could be modified to fit the standart 10mm screws. So I went to the bike shop today to ask them to change it from 9mm to a threaded 10mm and not only could they not do it also they said the metal is too thin and there is a risk I could only do two turns, which could be to few.
Now I want to ask the forum - is this such a bad idea? I really like the Mavic 851 as it is a part from my uncle from the late 80s. Shall I just buy an "ugly" (IMO) simplex derailleur or change the frame

?
Thanks alot for your comments
micki