Originally Posted by
Darth Lefty
6-speed goes right in where the 5 was, or needs skinnier chain or...? Sorry, I'm new to swapping stuff, have only ever replaced parts that broke on my other bikes.
You'll need a 6 speed axle, the extra spacers and to redish the wheel. Personally I think 5 are plenty, and I stick to Suntour freewheels. The NR rear will handle a 28 max if you get the chain length right. Been running those since 1972.
There was a freewheel called a Super-6 years ago, a 6 speed that fit in the space of 5, same chain, but not sure where you'd find one these days.