Hello, I've stockpiled several nice Suntour Accushift 7 speed rear hubs and some wide range 7 speed cassettes that they are compatible with. I also have some compatible shift levers and both front and rear derailleurs. Currently I already have two bikes with Suntour and I like them both. The more high performance one has Superbe Pro 8 speed accushift rear cassette hub on it and I think the build came out pretty cool. The other uses Superbe Pro down tube 7 speed accushift shift levers with a wide range Winner 7 speed freewheel and and X-1 rear derailleur that does a surprisingly good job at shifting. Both bikes have very firm shifting that I enjoy as an alternative to the much more subdued clicks you get with Shimano.
Now I may just keep my obsolete spares as backup inventory or collectors items. But I wanted to put the feelers out and see how others view this subject. I know on modern road bikes, that use lightweight cassettes, serious riders anticipate a certain amount of mileage out of one before they are replacing it. In all my years of riding I think I can only remember wearing out one individual cog on a freewheel or cassette, never the whole thing.
It appears to me that these early cassettes are very heavy and durable, probably good to go for many, many tens of thousands of miles.
If you're with me this far, I'll close by asking: would you go to the expense of embarking on a "new" wheel build using NOS (obsolete) parts just because?