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chainrings question(8 posts)

chainrings questionblownpupil
Dec 22, 2002 7:22 AM
I find that a 52 or 53 tooth outer ring is too steep. Using 39t inner. I've put on a 48 tooth large ring instead, and now can use all rear sprockets, and shifting seems easier. I am primarily a hill climber, not sprinter, and like having more middle gears.

Question:
for my next road bike, is there a crankset which comes set up as 40-50 out of the box? I don't miss the 52/11 or 52/12 combo, since I never used them (don't race)anyway? My primary rides are w/ club A/B+ (18-21mph) Do I lose anything not having a higher gear ?

Thanks
re: chainrings questionDaveG
Dec 22, 2002 8:01 AM
I don't think Shimano or Campy offer that combo "out of the box". You are not going to find a stock road bike with that setup. However, you can get rings in that size. Sugino and Salsa make rings in 48 and 50 which fit Shimano cranks. Shimano makes a 50 for the Sora crank (steel though). I'm not sure about a 50 outer ring for Campy. There's is nothing wrong with what you want to do - its your bike so set it up the way YOU want. Just expect to have to special order some stuff and perhaps pay a bit more.
re: chainrings questionbugleboy
Dec 22, 2002 8:29 AM
Campy used to make a racing triple 50/40/30 in the front. I'm not sure if they still do.
Good Question...TREKY
Dec 22, 2002 9:27 AM
....I've been thinking of the same thing.I'm not a big guy and don't hit the 52 with a small cog combination very often.I would like to go to a 48/39/30 to suit my type of riding.Is it difficult to adjust the derailures for this combination? Are those rings widely available?Any information would be deeply appreciated.
Good Question...pa rider
Dec 24, 2002 9:11 AM
Hey Treky. Here some info on the options for your chainrings. I'm looking at building a cross bike next winter and research the same question.

I have an ultegra triple with 130mm chainrings. I'm going to put an 48 big 38 middle on it. I found this site sales the chain rings called US MADE.

http://www.cambriabike.com/road/chainrings/index.htm

I did see them at www.bikepartsusa.com but they do not list them now. May not carry them anymore.

Emory
You can do it yourself.LC
Dec 22, 2002 10:26 AM
Shimano does make a 50T, but you don't see them very often. A good LBS or even the bigger mail order places can sometimes get them. There is also other makers of chainrings that work fine that come in about every size. TA, SR, Stronglight, all make them compatable with Shimano which uses a 130 BCD. Not much harder than changing a tire, just to remove the chainring bolts and put on a new chainring. You do not even have to remove the crankarms.

Going from a 52T to a 50T is not all that much different, in fact going from the 12 to 13 cog is a larger difference. It is sometimes better and more cost effective to customize your cadence, by customizing your cassette.
Just replaced my DA 53t with a 50tcoonass
Dec 22, 2002 5:13 PM
Contact Peter White @ http://www.peterwhitecycles.com/
All I had to do was to lower the front Derail. and change the Flight Deck setting to 50t...works beautifully....Peter is also expecting a 50t chain-ring in Jan/Feb for Record10 crank set...(you'll get some laughs from his website, and some politically incorrect comments too :)) FYI: he also can provide a 38t to replace the 39t.
Merry Christmas!
re: chainrings questionMR_GRUMPY
Dec 22, 2002 6:49 PM
Excel sells a Ritchey Cyclo-cross crankset with 38/48 rings for $150. It fits on a Shimano splined BB