Originally Posted by
Classtime
Funktopus your shifters are 6 speed and the previous owner was less careful about replacing components than you are being. I think 1050 is 6 speed and 1051 is 7. ALSO don't toss your freewheel. The larger cogs can be reversed and you can get twice the useful life.
For now, consider a new sunrace freewheel. They are inexpensive and order from someplace that accepts returns if the threading is incorect.
Thanks. Yeah, velobase agrees with you. I'll have a look at some Sunrace hubs. Wondering which part the previous owner replaced - given the bike is French and the freewheel is French I'm thinking maybe the shifters, but the derailleurs are from the same groupset. There is a comment on Velobase about the rear derailleur being marketed as a 6 speed but actually being able to cope with 7 speed. Would Vitus have shipped an unorthdox setup like that?