Difference Between 6 Speed & 8 Speed Uniglide Locking Rings

woodbine · May 6, 2016

I'm after a 14 teeth smallest/locking outer sprocket for my mid 80s MTB 6 speed Uniglide cassette (Deore/MT60 M730). They seem to be very elusive. However, a cheap, new 8 speed Uniglide cassette has come up. Will the 14 teeth smallest/locking sprocket on this 8 speeder be the same as the one on my 6 speed?

All other sprockets on the UG cassette have spacers, but the smallest sprockets have an integral raised shoulder to act as spacer between it and the second sprocket? Is the shoulder on 6 and 8 speeds the same thickness?

hamster · May 9, 2016

I've never come across 8 speed uniglide. As far as I know it's hyperglide with the lockring from 7 speed onwards.

woodbine · May 9, 2016

Thanks for your reply. There's an 8 speeder here, and I was wondering if the 14 teeth smallest sprocket would fit my 6 speed.

http://www.ebay.com/itm/Shimano-600-8-S ... SweW5VFEV-

Or have I got the wrong end of the stick?

hamster · May 10, 2016

Every day is a learning experience!

The cog spacing will be different between 8 and 6. Fron what I can see the locking sprocket has a shoulder. You might need to fit a spacer (old HG spacer should fit fine) and it will all probably work after a little fiddling. The sprocket spacing is 5.5mm on 6 speed, 4.8mm on 8...so you should ideally add 0.7mm extra. With the float on the top jockey wheel taking up errors, I think the HG spacer will improve things enough.

Difference Between 6 Speed & 8 Speed Uniglide Locking Rings

woodbine

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hamster

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woodbine

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hamster

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