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Old 04-01-14, 10:57 PM   #1
treadtread
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Cassette options

My Sirrus has 48-38-28 in the front, and 11-32 8 speed in the back. I usually ride at around 17-18 mph in the 38 ring. If I go faster than that, I usually shift the front to 48. What I am trying to say is - I rarely use the 11 teeth cog - only when I'm going downhill, i.e., 48-11/12 - and this is very rare. I prefer to coast downhill I'd like to reduce the gaps in the cassette - is there a cassette that has 32 as the biggest cog, but a much tighter range - say 13-32? I have only seen Sunrace 13-32 freewheels, not cassettes. I would prefer to stick to 8 speed so I don't have to change the drivetrain. Will I need to replace the chain as well? I don't have too many miles on the bike - just 1200.

Any suggestions?
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Old 04-02-14, 09:23 AM   #2
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Try Amazon

There are several offered for sale on Amazon ranging from $15 to $60 with the Sunrace brand cassette you mentioned being the most expensive. As long as your freehub is steel, it doesn't make any difference which brand you use. I am using an SRAM 10 speed wide-range (11-36) cassette with a Shimano RD because I didn't like the SRAM X9 RD that was OEM equipment. Just enter 13 - 32 tooth 8 speed cassette in the search box.
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Old 04-02-14, 09:27 AM   #3
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Customize.
Customising a Shimano HG50 Tiagra/Deore cassette
Cassettes from Harris Cyclery

Get a 13-26 or similar 8 speed cassette, and mix and match cogs to get what you want. There may be a slight degradation in downshifts due to non-matching ramps.

For example two Shimanos that could be pulled apart to make one custom.
Amazon.com: Shimano HG50 8 Speed Mountain Bike Cassette: Sports & Outdoors
Amazon.com: Shimano HG51 8-Speed Cassette: Sports & Outdoors

I could not find a 13-32 8 speed cassette on Amazon, several freewheels, but no cassettes.

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Old 04-02-14, 10:52 AM   #4
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I also run a 48-38-28 on my old Fuji and rarely move the front off the 38 ring. I also move at a 16-18mph cruising speed, but with a 13-21 six speed freewheel. Most of my time is on the 13, 14, and 15 cogs out back. I really don't feel the need for a smaller cog out back - and if I want to go faster or have a strong tailwind I shift to the 48 ring in the front. Terrain-wise, it is flat where I live so I really don't use too many gears. I had put the tripe on years ago when I was riding in hillier areas.

I'm sure you can find a cassette with more non-race related gears - meaning no really small 11t or 12t cogs. I just did a quick eBay search for 8-spd cassettes and came up with over 500 items. Not sure what freehub you have now, but there are some 13-26 Campy cassettes...
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Old 04-02-14, 01:52 PM   #5
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you didn't mention what type of hub you have, but i think that it's possible to buy individual Hyperglide cogs and custom build your own cassette. i have.

BTW, rather than spend the money on all the individual cogs i wanted, i just busted up some older cassettes and one new inexpensive one, and used those cogs and spacers.
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Old 04-02-14, 02:22 PM   #6
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If tighter shifting is your objective, I would suggest that you could limit a bit on the high and low end, and do something like a 12-28...

If you do use the large cogs in the rear frequently, you could possibly compensate by switching to a smaller middle ring (34 or 36?) up front and try to get a 12/28 cassette to work for most of your riding.
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Old 04-02-14, 02:24 PM   #7
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Quote:
Originally Posted by hueyhoolihan View Post
you didn't mention what type of hub you have, but i think that it's possible to buy individual Hyperglide cogs and custom build your own cassette. i have.

BTW, rather than spend the money on all the individual cogs i wanted, i just busted up some older cassettes and one new inexpensive one, and used those cogs and spacers.
It's a Shimano hub I guess - Joytech to be precise, but Shimano style, not Campy. Is my terminology right? I don't have older cassettes, might have to look on ebay. I'm also planning to call up my LBS (and hit a couple of LBSes on my way home) to see if anyone can help.
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Old 04-02-14, 02:32 PM   #8
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So I called up the LBS, and he says they have a 13-32 cassette - it will cost $40, with installation being another $40. Is that right? Sounds expensive I'll be able to buy the tools and do it myself in that cost!
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Old 04-03-14, 09:52 AM   #9
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It is correct that the cassettes listed on Amazon are freewheels, not cassettes for a freehub. The fact that there are no available cassettes for this range should tell you that most people are not interested in buying them as 13 and 12 tooth minimums went away a long time ago. There are a number of references to Joytech on Bikeforums. It is a Taiwanese company that makes Shimano compatible freehubs for bike manufacturers. If the existing cassette is a Shimano cassette, then you need to buy a cassette lock ring removal tool as well as a chain whip. I bought one from www banggood com last year for $7. You can find the exact same tool for sale on ebay for $10 postpaid and the shipping will not take 3 or more weeks as it did with banggood ebay auction # 310851717681. The lock ring tool is probably specific to the brand of cassette. I have come across cassettes on cheap bikes where I could not use my Shimano tool as it didn't fit the lock ring on the cassette. If the bike shop is going to charge you $40 to install a cassette you are buying from them, I would buy the tools so you have them in the future. It shouldn't take a competent mechanic more than 10 minutes to make the switch. I understand the economics of a bike shop having worked in one a long time ago. If you spend 10 minutes finding a $1 part for a customer, you have to make up the loss somewhere else and it is probably on labor charges.
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Old 04-03-14, 09:57 PM   #10
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$40 is absurd for a cassette change, but maybe in SF???
Do you have any bike co-op's near you?
Else, buy the tools.
Park HCW-16 Chain whip (or better)
Park FR-5 Lock ring tool.
1" wrench (12" Crescent?)
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