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Compact chainrings upgrade

Signal_ rabbit · 2013-04-20 17:19:04

Okay i run a compact Shimano 50/34 and an 11-28 on the back. I want more top end, can I just change the front rings to a 52/39? Is it that simple?

20-04-2013 5:19pm

#1

Signal_ rabbit

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Okay i run a compact Shimano 50/34 and an 11-28 on the back. I want more top end, can I just change the front rings to a 52/39? Is it that simple?

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Comments

#2 20-04-2013 5:25pm

paulieb2006

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What chainset do you have?

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#3 20-04-2013 5:28pm

Signal_ rabbit

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Tiagra

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#4 20-04-2013 5:34pm

colm_gti

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Presumably a compact chainset....you're very limited with regard to 53/39 chainrings unfortunately. You can get these in a 53/39 that will fit a 110mm bolt circle (compact).

Otherwise your best bet is to buy a shimano hollowtech 2 full double 53/39 chainset and sell yours to fund it. Assuming your tiagra is the most up to date (10 speed), it should be a direct swap with regard to the bottom bracket. You will need a longer chain and you'll have to adjust your front mech.

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#5 20-04-2013 7:06pm

DirkVoodoo

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A 50-11 will get you up to 57 Km/hr.

If you need more "top end" I'd imagine it's on descents and slight inclines, in which case you can get some gains for free, by working on your aerodynamics first.

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