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Old 01-11-13, 11:08 AM   #1
striknein
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Sanity check - cassette interchangeability

I'm modernizing a vintage mountain bike, and will be building up a new wheel with a Tiagra FH-4500 hub. Will any Hyperglide 8/9/10 speed cassette fit? I'm considering a SRAM PG-850.

Also, will I need to monkey with spacers, or is it as simple as dropping the cassette onto the hub and buttoning it up?
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Old 01-11-13, 11:15 AM   #2
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As usual, Sheldon had the answer. Nevermind folks!
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Old 01-11-13, 11:15 AM   #3
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I'd go with a 9 speed system. I believe tiagra 4500 is a 9 speed system.
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Old 01-11-13, 11:25 AM   #4
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I'd prefer to go with 8 speed at this point. The cassettes are a lot more affordable and since I'll be using friction shifters, I'm concerned the spacing between cogs on a 9-speed cassette might make shifting a little squirrely.
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Old 01-11-13, 12:20 PM   #5
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yea good plan 8 speeds are adequate.. but the cog size range is where you make the gears
actually different.

13-28 vs 13-34,, the 'mega range' is like a 13-24, 7 speed + a 34t cog for hills.

Last edited by fietsbob; 01-11-13 at 12:24 PM.
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Old 01-11-13, 02:17 PM   #6
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9 speed cassette is just a "couple" $ more than 8 speed . Shop online-
MUCH wider variety of combinations to select from than 8.
You will need a 9 speed chain. $15-20

When I went from 8 to 9 with friction shifters my shifting was much more precise. It was just a matter of ergonomics between the shifter and my thumb. (8 was better than 7) YMMV
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