Standard crank (39-53) and 12-25 cassette
09-09-10, 09:06 PM
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I'm 50 and I have been running a 11-23 cassette on the same crank since I bought my LeMond Zurich 3 years ago. Just recently I have been thinking I need to go to something like what you are suggesting, so I am going to be interested in what the hard boys here say.
09-09-10, 09:26 PM
#5
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We can't answer for you. It all depends on how strong of a rider you are, how tough the hills are, and your weight.
09-09-10, 09:30 PM
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Hmm ok I guess I will give it a shot. I have a chance to get a new Ultegra SL crankset with HTII BB for $120. Will a 6600 107-link chain be long enough?
09-10-10, 05:54 AM
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Like the gang says, it depends on two things: you (your fitness) and the hills.
I have a 39/53 and 12-23 and do fine on them but I am not climbing the rockies, just the hills in chester county PA.
I have a 39/53 and 12-23 and do fine on them but I am not climbing the rockies, just the hills in chester county PA.
09-10-10, 07:24 AM
#8
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I have the same combo. I would think 39/25 would let you climb MOST any neighborhood hills.
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09-10-10, 07:50 AM
#9
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A second question where there is not enough information. If you have a recumbent, no. If you have a long chainstay bike or a med/long cage rear derailleur, maybe not. But if you have a short chainstay, it should be long enough.
I run a 53/39. I have a 12-25 on one of my wheels, used in rides that range from pretty flat to rollers to lots of short/steep hills (up to 2 miles) to long climbs (10+ miles). I struggle sometimes in the 39x25 but I struggle in a 39x23 at the same points - I go slow no matter what once I've blown.
What I really miss is the 11 on the descents.
cdr
I run a 53/39. I have a 12-25 on one of my wheels, used in rides that range from pretty flat to rollers to lots of short/steep hills (up to 2 miles) to long climbs (10+ miles). I struggle sometimes in the 39x25 but I struggle in a 39x23 at the same points - I go slow no matter what once I've blown.
What I really miss is the 11 on the descents.
cdr
09-10-10, 09:57 AM
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I rode those same ratios for a long time in appalachia where the hills can be several miles long at at grades between 4 and 7%. It was fine.
09-10-10, 10:01 AM
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Presumably you have a bike now. Use Shledon Brown's gear calculater to compare your current low gear with the low gear that you'll get with your new setup.
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