Originally Posted by
T-Mar
Shimano pre-SIS freewheels will not work well, even if they're 6 speed. The best preformance will come from a Shimano HyperGlide freewheel with the profiled and ramped teeth. This will improve performance over the original Uniglide freewheel. All six speed HyperGlide freewheels are compatible with SIS (Shimano Index System), are readily available and inexpensive. Any 6/7speed, HyperGlide compatible chain will work well.
THe OP should check and ensure that he has a freewheel as opposed to a freehub with cassette cogs. The latter complicates matters slightly as a Uniglide freehub is not compatible with HyperGlide, though there are workarounds.
Thanks T-Mar, There was no freewheel or chain on the bike so when i start looking i want to get the right kind...hence the post.