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Campy: Lower Gears for Extremely Sporadic Use
Last weekend I failed to complete a grotesquely hilly century (the Mulholland
Challenge, 110 miles / 12000 feet of climbing.) Bonked and completed 98 miles with 9340'. I had put a compact UT Record crankset on late last year after enquiries in this forum, primarily to ease the tortuous climb to the Mt. Baldy ski lifts. That 34/25 low was sufficient for me to do anything I needed; it was the prolonged, relentless nature of this particular ride, coupled with getting lost, plus the temperature range from 35 - 100 that did me in. My question: what do I need to know before putting in a 29 toother for the next grotesque ride, the Breathless Agony in a couple weeks? a). The bike is a combination of Chorus (10 speed) and Record power train components. Could I use one of the cheaper Campy clusters, given that this would be put on a tiny number of times per year? Or would I be unhappy with the "lesser" stuff? b). Would I need to put on a longer-cage derailleur? Would the answer change if I consciously agreed to avoid several of the larger cogs on my 50 tooth chainring? c). Ditto #b for the chain. Thanks for any advice. I need to do something and do it fast. Art |
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 20, 6:40 pm, (Arthur Shapiro) wrote:
Last weekend I failed to complete a grotesquely hilly century (the Mulholland Challenge, 110 miles / 12000 feet of climbing.) Bonked and completed 98 miles with 9340'. I had put a compact UT Record crankset on late last year after enquiries in this forum, primarily to ease the tortuous climb to the Mt. Baldy ski lifts. That 34/25 low was sufficient for me to do anything I needed; it was the prolonged, relentless nature of this particular ride, coupled with getting lost, plus the temperature range from 35 - 100 that did me in. My question: what do I need to know before putting in a 29 toother for the next grotesque ride, the Breathless Agony in a couple weeks? a). The bike is a combination of Chorus (10 speed) and Record power train components. Could I use one of the cheaper Campy clusters, given that this would be put on a tiny number of times per year? Or would I be unhappy with the "lesser" stuff? b). Would I need to put on a longer-cage derailleur? Would the answer change if I consciously agreed to avoid several of the larger cogs on my 50 tooth chainring? c). Ditto #b for the chain. Thanks for any advice. I need to do something and do it fast. Art Veloce cassettes work great and run about $50 if you have them shipped across the pond. I like probikekit.com, because airmail shipping to the US is free, and is usually faster to the West Coast than orders from Nashbar. If you must have at least one aluminum carrier, Centaurs run about $75. As for the derailleur and chain, I strongly recommend against going that far out of spec. Especially on the chain. If you bonked on that last ride, you simply can't trust that you're not going to make a stupid shift and break your chain, rip the derailleur off the hanger (or the hanger off the frame) and quite probably crash. If you do opt to avoid a range, avoid the small/small combos and go with the longer chain. FWIW, my CX bike currently has a Veloce UT 50-34 crank, a Centaur long cage RD and a SRAM PG-970 11-34 cassette. The cog spacing is close enough to C10 to index just fine with my 10s Veloce Ergos, and I have a wider range than most road triple setups (52-42-30/12-25). You just set the limit screws to lock out the final click. |
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 21, 3:40*am, (Arthur Shapiro) wrote:
Last weekend I failed to complete a grotesquely hilly century (the Mulholland Challenge, 110 miles / 12000 feet of climbing.) *Bonked and completed 98 miles with 9340'. I had put a compact UT Record crankset on late last year after enquiries in this forum, primarily to ease the tortuous climb to the Mt. Baldy ski lifts. That 34/25 low was sufficient for me to do anything I needed; it was the prolonged, relentless nature of this particular ride, coupled with getting lost, plus the temperature range from 35 - 100 that did me in. My question: what do I need to know before putting in a 29 toother for the next grotesque ride, the Breathless Agony in a couple weeks? a). The bike is a combination of Chorus (10 speed) and Record power train components. *Could I use one of the cheaper Campy clusters, given that this would be put on a tiny number of times per year? *Or would I be unhappy with the "lesser" stuff? b). Would I need to put on a longer-cage derailleur? *Would the answer change if I consciously agreed to avoid several of the larger cogs on my 50 tooth chainring? c). Ditto #b for the chain. Thanks for any advice. *I need to do something and do it fast. Art Sounds like fun! If you made it 98 out of 110, you don't need to make any technical changes. Dealing with the temp, as well as eating and pacing will get you those last 12. Looking to make temporary tech changes will IMO lead to potential issues that you won't have time to even discover, let alone solve in the time you have. I'd focus on the other aspects of preparation. Good luck! Joseph |
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Campy: Lower Gears for Extremely Sporadic Use
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 20, 7:40*pm, (Arthur Shapiro) wrote:
Last weekend I failed to complete a grotesquely hilly century (the Mulholland Challenge, 110 miles / 12000 feet of climbing.) *Bonked and completed 98 miles with 9340'. I had put a compact UT Record crankset on late last year after enquiries in this forum, primarily to ease the tortuous climb to the Mt. Baldy ski lifts. That 34/25 low was sufficient for me to do anything I needed; it was the prolonged, relentless nature of this particular ride, coupled with getting lost, plus the temperature range from 35 - 100 that did me in. My question: what do I need to know before putting in a 29 toother for the next grotesque ride, the Breathless Agony in a couple weeks? a). The bike is a combination of Chorus (10 speed) and Record power train components. *Could I use one of the cheaper Campy clusters, given that this would be put on a tiny number of times per year? *Or would I be unhappy with the "lesser" stuff? Veloce is Centaur and Chorus w/o the 'spider' of aluminum carrier- Great cogset with the same durability and performance as the others for less $ and a WEE bit of weight. b). Would I need to put on a longer-cage derailleur? *Would the answer change if I consciously agreed to avoid several of the larger cogs on my 50 tooth chainring? If your chain is sized correctly now(not too short), just put it on. We have a demo bike with a short cage, 13-29, FUL sized crank-no problem. c). Ditto #b for the chain. See above Thanks for any advice. *I need to do something and do it fast. Art |
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Campy: Lower Gears for Extremely Sporadic Use
Thanks, everyone. Went over to the LBS yesterday and a Veloce cassette will
be here on Thursday. Hope that will get me over the 12000 feet of Breathless Agony, including one climb exceeding thirty miles in length. They believe that if I'm willing to tolerate sloppy shifting, I'll get away with the current derailleur and chain. That's OK given the once-or-twice-a-year need for this setup. Art |
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 22, 10:46*am, (Arthur Shapiro) wrote:
Thanks, everyone. *Went over to the LBS yesterday and a Veloce cassette will be here on Thursday. * Hope that will get me over the 12000 feet of Breathless Agony, including one climb exceeding thirty miles in length. They believe that if I'm willing to tolerate sloppy shifting, I'll get away with the current derailleur and chain. *That's OK given the once-or-twice-a-year need for this setup. Art Sloppy shifting? I have run a short cage Centaur 10 speed rear derailleur with a 13-29 cassette (Veloce) and 46-30 chainring double (Race Face Turbine LP) and Record shifters. No sloppy shifting. |
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Campy: Lower Gears for Extremely Sporadic Use
Artoi wrote:
In any case, you obviously will need a different chain length if you are going to make significant changes to your gearing. I don't think this is the case. A chain that is set to an adequate length for a 50/29 should work fine for 50/25, given that the small/ small combination is the same (or almost the same) in either case. It only matters that there is enough wrap capacity for the larger range. Chalo |
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 22, 11:43*am, "
wrote: On Apr 22, 10:46*am, (Arthur Shapiro) wrote: Thanks, everyone. *Went over to the LBS yesterday and a Veloce cassette will be here on Thursday. * Hope that will get me over the 12000 feet of Breathless Agony, including one climb exceeding thirty miles in length. They believe that if I'm willing to tolerate sloppy shifting, I'll get away with the current derailleur and chain. *That's OK given the once-or-twice-a-year need for this setup. Art Sloppy shifting? *I have run a short cage Centaur 10 speed rear derailleur with a 13-29 cassette (Veloce) and 46-30 chainring double (Race Face Turbine LP) and Record shifters. *No sloppy shifting. But that's within the short cage's wrap capacity. A 16T gap up front isn't. I've tried, and you definitely get droopy chain in the small- small with a 13-29/50-34. |
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Campy: Lower Gears for Extremely Sporadic Use
On Apr 22, 12:23*pm, Hank wrote:
On Apr 22, 11:43*am, " wrote: On Apr 22, 10:46*am, (Arthur Shapiro) wrote: Thanks, everyone. *Went over to the LBS yesterday and a Veloce cassette will be here on Thursday. * Hope that will get me over the 12000 feet of Breathless Agony, including one climb exceeding thirty miles in length. They believe that if I'm willing to tolerate sloppy shifting, I'll get away with the current derailleur and chain. *That's OK given the once-or-twice-a-year need for this setup. Art Sloppy shifting? *I have run a short cage Centaur 10 speed rear derailleur with a 13-29 cassette (Veloce) and 46-30 chainring double (Race Face Turbine LP) and Record shifters. *No sloppy shifting. But that's within the short cage's wrap capacity. A 16T gap up front isn't. I've tried, and you definitely get droopy chain in the small- small with a 13-29/50-34.- Hide quoted text - - Show quoted text - Waitasec...I suck at math. That's a 16T gap, too. 8-) |
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