Road Cycling - cassette gearing 12-23 or 12-25?

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View Full Version : cassette gearing 12-23 or 12-25?


deliriou5
04-22-03, 10:51 AM
just wanted to know what is standard fare on most shimano 9spd bikes?


Bobatin
04-22-03, 11:08 AM
You need to look at where you are planning on riding the most, if it is mostly flat or rolling hills go for 12-23.

ImprezaDrvr
04-22-03, 11:13 AM
To answer your question, I belive that a 12-23 is usually stock on factory bikes. It should be easy enough to switch out with your LBS, though. I put a 12-25 on my bike for the spring. Those extra teeth on the cogs make a big difference on a climb.


Styk33
04-22-03, 01:35 PM
12-23 is standard for most road bikes. My cyclocross bike came with a 12-25, which will be fine climbing steep grades with 80lbs of weight, but not for riding.

I put a 12-21 corncob on my bike and it is fine in the foothills (prolonged 5-12% climbs). I do not push hard enough to use an 11, so a 12 is great.

How much time do you plan on climbing and how good of a climber are you is the question.

Phatman
04-22-03, 07:20 PM
12-25 was stock on my lemond. I switched it out though, for a 12-27, but then again, the area of MD that I live in is really hilly.

SD Fixed
04-23-03, 10:11 AM
Would a triple make the gear selection better?

ImprezaDrvr
04-23-03, 10:34 AM
William, it all depends. If you want to spin up every climb, no matter how steep, then it will make your gearing better. Depends on your terrain, your riding style, etc. A triple definately gives you more options, given that you have another ring under your usual small roadie ring.

SD Fixed
04-23-03, 10:57 AM
I've read a bit about how important cadence is.

On my last ride home, I road with someone who swore by cadence training.

I don't really follow it (mainly because of lack of training education) and I pulled away from him on the hills in no short order.

Now, I could suck and he could suck more, or cadence training isn't that important.

But I was wondering, because there's the occasional time I find I wish I had more of a gear.

ImprezaDrvr
04-23-03, 01:05 PM
Well, cadence training isn't necessarily the best for everyone, but nothing really is best for every last person. If you're looking for something that will give you numbers, get a heart rate monitor and start using that to guide your training. there are a ton of other methods out there that all depend on what you're trying to do. But, with regards to spin cadence, it is widely accepted that a cadence of around 90 rpm is a good goal for most. I started out as a spinner, running over 100 rpm except on steep climbs. I became a masher for a couple of years and went back to refining my spin this year. I'm much more comfortable onthe bike, recover quicker during and after rides and feel better all around as a result. However, I don't train using my spin as a metric of how hard I'm going.

danr
04-23-03, 03:02 PM
I agree. It highly depends on what type of rider you are and what type of terrain you will be riding.

I'm not a speed demon, so I use 12-25, although I live in the flatlands of the Midwest (St. Louis area).

WorldIRC
04-23-03, 03:29 PM
I use 11-21. Some people think I am crazy but I am just crazy when I am in a race.

pletcgm
04-23-03, 03:44 PM
I use the 12-25 because of the steep hilss here in tennessee.

Phatman
04-23-03, 06:45 PM
Originally posted by WorldIRC
I use 11-21. Some people think I am crazy but I am just crazy when I am in a race.

how often do you use the 11? Also, I haven't ever seen that combo before...seems odd. Did you custom select the cogs for your cassette?

WorldIRC
04-23-03, 07:12 PM
Campagnolo offers that combination.

bmw_maniac
04-23-03, 08:02 PM
I have a pretty high cadence.

On the flat I do about 100-120, uphills if I've got a gear low enough I do 120-140, and Downhill I can sometimes end up doin 150 or more. I am the fastest pedaller in my team, and one of the fastest in my club I think.

Does anyone else think it's weird how I pedal faster uphill than I do on the flat? I find I get more power this way

I find that I get a lot more power once I get to 100 rpm or higher. Once I get to 120rpm the bike just takes off and leaves people in its dust.

I am also thinking of changing the 2 highest gear cogs on my Raceline, as they are change-able. Whats the smallest cog I can fit on, and what would this make my riding like? (I go extremely fast on the downhills if I know the road well)

chester2
04-24-03, 03:33 AM
Maybe I lost count, but I think the inside cog on my cluster is 19 teeth..Campag Veloce. Either way it's very small, and hard yakka up the hills for a non climber like me!
I intend to purchase a new frame later this year, and the group I am going to use has 27 teeth on the inside cog..so I (hopefully) will fly up those hills!?