so i recently picked up an 86 centurion ironman. its pretty much all original (not that it matters much to me) with what i think are stock shimano 600 components. everything is in pretty good shape, but showing some signs of wear - sepecially the freewheel assembly.
i'm thinking of replacing the freewheel, but have a few concerns. i've seen some nos 600 freewheels on ebay, but they seem like they can be pricey. i've also found some new shimano freewheels (such as hg22 6spd) for under $20. are the newer one's cheaper quality? and would i be doing myself a dis-service by replacing a 600-quality freewheel with one of these?
these new ones, i think, are hyperglide style. i'm not sure if the original one that's currently on there is of the hyperglide design or if shimano ever made a 600 with hyperglide, or what. any suggestions or help would be much appreciated.
btw, if i should post this question in a different forum, please let me know, but i've asked questions hear about my old superior and was very impressed and pleased with the help i got. so thanks in advance!