Originally Posted by
canklecat
…My pet peeve is the Shimano MegaRange freewheel. There's too big a jump to and from the largest cog, which makes for some really awkward shifts on climbs. And the MegaRange is really picky about chains. Anything other than Shimano or KMC "narrow" chains will skip over the teeth under load. There isn't enough clearance between the teeth and spacers to use some chains. No such problems with the SunRace.
I actually "warped" the mega sprocket on one trying to shift under load.
My observation of Sun Race freewheels is that the sprockets seem to wear out rather quickly when compared to vintage freewheel sprockets. Possibly the metal is softer?