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[Closed] New Chainring Help

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Im currently running a 11-34 and 2 x 9 24/36 gxp 2 but finding im spinning out at times and want to put something bigger on the front.
Advice on whether a 38t would make any noticeable difference and if so then suggestions of what to go for.
Looking at the hope rings. Is there anything I should be avoiding? Can I put a single outer ring on or should I be only going for an middle?

Cheers


 
Posted : 04/12/2012 12:36 pm
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A 38T is only 5% larger, so would increase speed at spin-out accordingly.
A 40T would be 10% so a better bet, but may not clear your frame if on the middle ring position on a triple crank.

PaulD


 
Posted : 04/12/2012 3:09 pm
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its a 2 x 9 chainset so should be ok i guess? Do you think that the Hope 38 and 40t rings would be ok for the job? is there any ramping at all that should be taken into consideration?


 
Posted : 04/12/2012 4:50 pm
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Rings are usually specified as single-speed (no ramps and pins) or not mentioned.
Your double may be odd sized BCD, so check carefully.
My worry is still the diameter of a 40T and it fouling the chainstay.
Again, work out the diameter and see if it will be OK.

Rings can be specific WRT ramping from a given smaller ring, so again worth checking what info available.
Even SS specific rings will shift with a front mech if you back off the pressure.

PaulD


 
Posted : 04/12/2012 8:11 pm