scott speedster

What bike and bike bits should you buy?
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scott speedster

Postby cyclosteve » Thu Nov 22, 2012 22:25 pm

hi all the bike i am looking to buy has compact gearing. Shimano 105 Compact Black FC-5750 Hollowtech II 50 x 34.can i change just the chain rings to a 53/39 as i got a spare new 10 speed cassete or will i have to change the complete chainset

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Re: scott speedster

Postby southdownswolf » Thu Nov 22, 2012 22:45 pm

Not sure you are being clear..
Do you want to change the cassette or the chainset?
The 50x34 and 53x39 refers to the chainset.
The cassette is the gears on the wheel.

If you want to change the chainset, then you will need to make sure that the botom bracket is compatible with the bike you are looking at. You may also need a new chain as the chain rings are larger.

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Re: scott speedster

Postby Grill » Thu Nov 22, 2012 22:47 pm

The compact chainset has a 110bcd whereas 53/39 requires 130bcd, so you'd have to change the entire chainset.
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