Cassette sizing
10-09-11, 11:46 PM
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Cassette sizing
Hello guys! I am planning on changing cassettes and I have a question. My current is a Sram 9 speed 12-26. If I swap out this one for a 11-36 cassette will I have to change anything else on the bike? Will I need to retune the rear derailleur. What if I switch to a 11-28? Will it require different tuning? I plan to use an old cassette/wheelset for commuting and casual riding and a new wheelset/cassette for long and/or fast rides and I do not want to retune whenever I switch wheels. Thanks!
10-10-11, 12:05 AM
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Answer depends on a couple factors. 26 to 36 tooth is a big jump. If you have a road rear derailuer the max is typically 28ish. The other concern is something called chain wrap This is the chain slack the derailuer can accommodate between the fewest tooth gear combo and largest tooth gear combo. I would suggest finding the shimano techdoc equivalent and see what the max cog size is and chain wrap for your brand of rear derailuer.
Last edited by velorider562; 10-10-11 at 12:40 AM.
10-10-11, 12:06 PM
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New chain , & Need an MTB long cage rear derailleur too..
Given: the chain and cogs wear , you will take the chain
off the bike when you pull off the wheel..
Why not leave the new stuff on.. ?
Given: the chain and cogs wear , you will take the chain
off the bike when you pull off the wheel..
Why not leave the new stuff on.. ?
Last edited by fietsbob; 10-10-11 at 12:11 PM.
10-10-11, 04:09 PM
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If I go to a 11-28 would it be fine?
Currently I am using a Tiagra long cage rear derailleur with a triple up front.
10-10-11, 06:22 PM
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I want to change to the new wheels when I go on rides and use my old wheels when I go on commutes or short ride(the bike stays outside for a long time and I don't want the wheels damaged or stolen), and I don't want to change cassettes every time.
If I go to a 11-28 would it be fine? Currently I am using a Tiagra long cage rear derailleur with a triple up front.
If I go to a 11-28 would it be fine? Currently I am using a Tiagra long cage rear derailleur with a triple up front.
