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andy
Posted: 08 March 2008 02:14 PM   [ Ignore ]  
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Craig is the Head Mechanic in the North Vancouver location. Fire away with your tech questions about your bike and its parts!

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andy at db

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bretzki
Posted: 03 November 2009 04:08 PM   [ Ignore ]   [ # 1 ]  
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I have an older bike (1993) with a 7 speed dérailleur. I need to replace the rear wheel. I have a 8/9 speed wheel. Can I reliably use the 8/9 speed wheel and 8 speed cassette with the existing 7 speed rear dérailleur - just not use the largest cog?

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Drew@NV
Posted: 03 November 2009 05:51 PM   [ Ignore ]   [ # 2 ]  
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Hi Bretzki,

Thanks for the query.

The spacing of a 7-speed cassette is different from an 8-speed so, assuming you are using indexing shifters not a friction based thumb shifter, your 7-speed shifters will not reliably shift between gears on an 8-speed cassette.


You can use an 8/9 speed wheel with a 7-speed cassette with a spacer on the inside.

Cheers,

dbNV-Crew

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