Buying half a cassette, does it make sense?
08-24-21, 09:41 PM
#1
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Buying half a cassette, does it make sense?
I am replacing my chain, so I am thinking about replacing the cassette as well. I have been using 9 speed, 12-25. These are hard to find, and I am not sure what other cassette would work with a Tiagra/Sora short cage deraileur. I notice that one seller is offering 'replacement kits', with the 17-19-21-23-25 cogs. I mostly use the 17 and 19 and seldom use the 12-13-14-15 cogs. Does it make sense just replacing the bigger cogs (I may even need to stockpile)? What are the alternatives?
Thanks.
Thanks.
08-24-21, 10:01 PM
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Yes, as long as the other cogs are in good shape of course. You may run into a slight issue with the new and old adjacent cogs not designed to work optimally with each other as each cassette has cogs that are matched to each other for for better shifting. Having said that the worst mismatch I have come across was more or less acceptable when shifting and not noticeable in other non-matched cogs. You may get lucky and have the matching cogs for your cassette though.
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08-25-21, 02:11 AM
#3
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That cassette is certainly still available in the UK, if you're prepare to pay the shipping costs.
08-25-21, 07:12 AM
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I usually find such things never a bargain. Especially if you are buying bike stuff off some site that just amalgamates sellers on one site like Amazon, Ebay and quite a few others.
08-25-21, 07:30 AM
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I don't see an issue with only replacing the cogs that are worn especially if they are the same brand so the shift assists work together with the other cogs.
08-25-21, 07:50 AM
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08-25-21, 08:54 AM
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https://www.universalcycles.com/shop...06&category=40
https://www.universalcycles.com/shop...66&category=40
Learn to shop. As soon as you replace the worn out cogs and start riding... the smaller cogs you didn't replace will be worn out and you are back to square-one. Buy New Cassette!
https://www.universalcycles.com/shop...66&category=40
Learn to shop. As soon as you replace the worn out cogs and start riding... the smaller cogs you didn't replace will be worn out and you are back to square-one. Buy New Cassette!
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08-25-21, 09:50 AM
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They are not hard to find. You can buy new 9 speed cassettes from Ebay all day long. Any Shimano 9 speed will do. You don't have to stick to Shimano neither - Sunrace, SRAM, etc, all work with Shimano.
08-25-21, 10:26 AM
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If you can get the ‘replacement kit’ cheap enough, then buy it. If it is close to the price of a complete cassette, buy the latter.
John
John
08-25-21, 10:29 AM
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If you rarely use the smallest cogs, that suggests to me that your chainrings might be bigger than optimal. I recently downsized the chainrings on one bike with the idea of making every available gear count, and I'm pleased with it.
But before doing anything else, I'd go ahead and see if the new chain skips on the old cassette. You should be able to replace the chain a couple times before needing to replace the cassette, assuming you're not waiting way too long.
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