I have an old steel Somec - 20, 30 years old with Shimano 600 groupset. It has a 7 speed freehub, which my LBS says is obsolete (really?). Is there still a source for these or only Ebay? Basically, it has 53/39 rings and 12/24 t sprockets, d/t shifters,brazed on hanger for the front mech. and is on sprints and tubs. A couple of sprockets are worn and slip at times so at the least I need to swap them. However, bottom gear is er, too high (44") - bike is in Denia, Spain where the hills are really hard work... So another freehub with a 30t sprocket would be welcome. But I'm fed up with carting 2 spare tubs around instead of a small puncture outfit. Consequently I'm considering swapping the wheels for modern ones with clinchers and fitting a compact chainset 50/34. The front mech can be lowered 1/4", or more with use of a file. Rear drop outs are 126mm but I'm sure 130mm will fit easily. Obviously I'll need to change the front and rear mechs.
So, I have 2 choices, keep bike as it is if I can source a freehub, or go the whole hog and fit modern parts to it ( this appeals most if finance runs to it...) I want to sort out the viability of my options and then obtain the parts here in the UK before bringing the bike home from Denia, possibly September.
Thanks for reading this far, all comments, suggestions welcome.