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Old 10-20-09, 05:36 PM   #1
ventokevin
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Advantages of a small chainwheel?

what is the point in have a smaller chainwheel rather than a bigger one?
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Old 10-20-09, 05:59 PM   #2
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I think you mean sprocket?

but having a smaller sprocket is alot better for grinding and stuff, jsut think would you rahter have a 6 inch sprocket when grinding or a small 3 inch one?
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Old 10-20-09, 05:59 PM   #3
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Less drag.Less weight and looks cool
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Old 10-20-09, 07:22 PM   #4
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O alright thanks i was just a little confused about it.
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Old 10-20-09, 08:44 PM   #5
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There are also disadvantages. Like if you run an 8T or 9T driver (22/8 or 25/9 ratio), you are more likely to smash the bearings, unless they are needle bearings.
There is more torque on the drive system =>more wear on parts, parts break easier
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Old 10-21-09, 06:02 AM   #6
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Your BB bearings don't last very long if you run micro gearing like that. I really want to make the change to 30-11 so I can save mine.
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Old 10-21-09, 06:37 AM   #7
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I run a 25/10 ON MY MODEL-C and a 30/10 on my second wave.
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Old 10-21-09, 01:51 PM   #8
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25-10?
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Old 10-21-09, 03:25 PM   #9
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25t chainwheel and 10t in the rear
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Old 10-21-09, 04:19 PM   #10
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yea i know what that means...hows that feel though?
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Old 10-21-09, 04:42 PM   #11
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I like a harder gear on my bikes.My friend said it was a little hard,But It works for me.
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Old 10-21-09, 05:18 PM   #12
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a 3/1 ratio is perfect in my opinion. I run 36/12 right now, but i want to run 30/10 though
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Old 10-21-09, 06:09 PM   #13
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I like a harder gear on my bikes.My friend said it was a little hard,But It works for me.
25-10? Wouldn't that make it easier than harder?
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Old 10-21-09, 08:33 PM   #14
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25-10? Wouldn't that make it easier than harder?
That gear is on my street cruiser.With the diameter of the tires 24.75 inches,It comes out to 61.875
My 30/10 on my second wave with the tire diameter of 20.94 inches.It comes out to 62.82
I like the ratio to be in the low sixties.
My cruiser race bike for the track has 25/11,So it winds up faster for the shorter bmx tracks.

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Old 11-08-09, 08:39 PM   #15
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Your BB bearings don't last very long if you run micro gearing like that. I really want to make the change to 30-11 so I can save mine.
What difference does the gearing make on the bottom bracket? If you run a 3-1 ratio, it requires the same energy to pedal and the same revolutions no matter what gearing you run. The bottom bracket will wear the same too.
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Old 11-09-09, 12:17 AM   #16
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It doesnt have any effect on your BB bearings. It just puts more stress on your chain and your driver bearings wont last as long running 9t or smaller. Ive had the same 10 tooth driver for like 3 season still runs like new just maintain your stuff.
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Old 11-11-09, 01:23 PM   #17
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lots of good reasons for the smaller sized gearing.

1. smaller rear gear means you don't need a huge, heavy drop out to cover and protect the chain.
2. smaller front gear means it's harder to hit and hang up on things.
3. smaller front means that when you do hit it, there is less leverage, making it harder to bend.
4. lighter and stronger.

Smaller gearing and threadless (1 1/8) headsets are two of the best things to happen to bmx bikes.
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