I have an early '80s Raleigh Wyoming. I converted to 700c and cold set the frame for 130mm. I tried a 7 speed freewheel, but there's not quite enough clearance for it. I'm using the 6 speed version now, but I gather that I could try a 1mm spacer on the axle and it may give just enough room to get it to work. I thought I'd give it a try, but I asked a couple of bikes shops if they had spacers but they said no, and the only ones I can find on-line come in a bag of 20. Anyone have a source for one? Will I need to redish?
This is going to sound like retro-grouch resistance at first, but what is your goal in switching from 6-speed to 7-speed? New freewheels tend to come in 14-28 or 14-34 either way, so there isn't much of a gain in my book. The extra cog is added where it is least needed in the progression.
Now that your frame is already 130mm, you might as well upgrade a little further into 8+ speed cassette hubs.
