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Climbers with 110BCD Compact(17 posts)

Climbers with 110BCD CompactSTI Guy
Jul 30, 2003 3:05 AM
I want to hear from all those dedicated climbers that have
a 110BCD compact chainring setup. Do you like the way it works? Problems? I am considering a 36/50 chainring with a 13/29 cluster. I know this would limit my top speed on the flats, but feel it is a good trade off. Thoughts?
Thanks for your input.
Keep the rubber side down.
That will give some low gears!Spunout
Jul 30, 2003 4:22 AM
No problems. 50/13 is a bigger gear than 53/14 and do you spin that out?

I thought a 12-25 would fit well with a 36-50. But, just wait awhile, FSA will make a 36/52 combination available. Pinarello may have done so already.
I am not a dedicated climber...lonebikeroftheapocalypse
Jul 30, 2003 6:16 AM
but I wanted low enough gears to guarantee I will be able to handle almost anything in the Finger Lakes. I went with 46-36-24 and 11-28. This gives 111.9 high gear and 34.4 low with a 21 inch granny for those completely sick hills. So far I haven't had to use the granny. At 100 rpm thats over 33mph, heck I'm tucked and coasting before that. No problems here. The Sugino crank I have is a little flexy under my 230lbs, but then again what wouldn't be.
Would not flex: Record 30-40-50. Sweeet. nmSpunout
Jul 30, 2003 6:37 AM
Maybe not, but it wouldlonebikeroftheapocalypse
Jul 30, 2003 6:51 AM
warp the heck out of my checking account. If you're talking about the Record Carbon cranks there's one thing even more inflexible than an $800 crank, my wife's answer of no. There's no way I'm sneaking that in under the radar.
$230 USD. But, I don't know who has the new 30/40/50...Spunout
Jul 30, 2003 7:30 AM
http://www.coloradocyclist.com/common/products/productdisplay2.cfm?PRRFNBR=25657
Does Campy make...PaulCL
Jul 30, 2003 7:54 AM
..smaller chainrings that fit a standard crank?? I'm not sure what the standard is for a 53/39 campy crank..134BCM maybe?? But, for example, do they make 50/36 chainrings to fit??

Ifso, I could have used them in Colorado last month!! The 13/26 and my 53/39 wasn't enough. I didn't want to spring for a triple or 13/29. The 13/29 wouldn't get me that much more and would have cost me plenty once you add up the cost of the cassette and the long cage derailleur.
No, limited by BCD to a 39....Spunout
Jul 30, 2003 8:48 AM
I have a 13-29 that is great, 39/29=1.34 but I haven't been in the alps.

You can use the med. cage derailleur, I use Chorus. BTW, most can use the small cage without problems if you are careful about chain length and gear selection.
No, limited by BCD to a 39....PaulCL
Jul 30, 2003 11:26 AM
Careful about gear selection = no cross chaining

I am assuming that my Record with the 13/26 has the medium cage derailleur. Have you used a 13/26 before and ifso, does the 29 really give you that much more spin??

I don't know why I'm asking this now. I got back from Colorado and climbing 25,000 feet about three weeks ago. Of course, much to my wife's chagrin, I am planning to go back ASAP. Now to find the $$ and time....
The 29 is some serious climber....Spunout
Jul 30, 2003 4:32 PM
three teeth makes a big difference. I have a 12-25 also, I have some very steep hills here and sometimes use the 13-29 for recovery rides in the hills, when I want to spin.
re: I am not a dedicated climber...cyclopathic
Jul 30, 2003 12:59 PM
I am impressed you haven't used granny yet. Have you done Case hill yet?
re: I am not a dedicated climber...lonebikeroftheapocalypse
Jul 31, 2003 7:38 AM
I can't honestly say I know where Case Hill is. I ride mostly in the Honeoye-Canadice-Hemlock-Conesius lakes areas. I've made it one of my goals to find and ride Gannet Hill this year. I've heard that it is one the legendary hills in the area. I'm fairly new to cycling(5years) and I ride alone mostly so I'm not up on all the names of the various hills.
It just means that......tirider
Jul 30, 2003 8:25 AM
.... you won't be able to keep up with me in the flats anymore, Gary. Heheheheheheh
Check the F derailer position !Steve Bailey
Jul 30, 2003 8:49 AM
Hell, you could run 34/50 and get even lower gearing, then use a cassette with a tighter cluster. My Ultegra triple rated F derailer easily handles a 38/54 spread on a 130BCD crank (Though a 16 tooth spread is max.). Just double check that you can get the derailer a bil lower on the ST, which you will need to be able to do to match the smaller rings. Some frames are braze-on, others have bottle cage bolts in the way, or an oval seat tube. Give it a look at first.

SB
Check the F derailer position !LC
Jul 30, 2003 9:11 AM
That is what I found. It will only work if you can get the front deraileur low enough so that it just clears the 50T ring. In most cases this means you need a clamp on deraileur to be able to position it low enough.
Depends on how important high gears are to youRay Sachs
Jul 30, 2003 11:25 AM
Low gears are MUCH more critical to me than high. I use a 110 bcd crank with 34-48 rings and a 12-27 in back (and sometimes even use a 12-34 in back for a low gear thats well below most road triples). 34-48 works fine and 36-50 should work equally well. Just make sure you can get the derailure low enough in front - I couldn't do it on a bike with a braze on front der, but it works fine with a clamp on. I can spin a 48x12 up into the high 30s on descents - 50x13 is a bit lower but I've used that combo before and rarely wanted a higher gear.

-Ray
Stronglight or TANiemand
Jul 30, 2003 11:09 PM
I have a TA Zephyr chainset with 100bcd. 36/48 with 13/26. Stock they come as 36/50 or 34/48. TA stuff is super high quality, TA rings are the best you can get IMO.Check out http://www.chickencycles.com/products/chains/pg_chainsets.html.
Not sure about US distribution, tho'.
Stronglight also do a 110 the Granfondo, I think with the same set-ups. Will be a bit cheaper. The site is out of date, but specs are in a downloadable catalogue on this page:
http://www.stronglight.com/anglais/produits/prodf1.htm