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Old 11-25-08, 10:40 PM   #1
GRHebard
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gear ratio for street/tricks

what is a good gear ratio to use for tricks on the street. like doing wheelies and that kind of stuff.
sorry i havent ridden a BMX bike since middle school

thanks
Greg

Last edited by GRHebard; 11-26-08 at 03:36 AM.
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Old 11-25-08, 10:53 PM   #2
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44-16
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Old 11-26-08, 03:35 AM   #3
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no wonder why everyone makes fun of bikeforums.net
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Old 11-26-08, 07:39 AM   #4
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Then why did you come here and ask?
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Old 11-26-08, 11:05 AM   #5
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i guess i just had to see it for myself.
plus i cant think of any other BMX forums haha
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Old 12-04-08, 09:47 AM   #6
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gear ratio= front sprocket teeth divided by rear freewheel/driver/cog teeth.

standard ratio for a bmx bike is 2.75

popular combos are:
43-45/16
39/14
36/13
33/12
30/11
28/10
25/9
22/8

those all feel about the same but the smaller ones mean less material so they are lighter.
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Old 12-04-08, 07:26 PM   #7
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i find 25/9 the best
and bull they feel the same
i find from 33 ^ my sprocket almost hits on half pipes or when i **** up on the spine
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Old 12-06-08, 03:45 PM   #8
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the smaller the ratio, the harder it is to pedal. and it puts more pressure/tension on your BB bearings.
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Old 12-10-08, 07:42 PM   #9
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are you dumb???
actually its harder to pedal with higher ratios
and its ur bb kit
and do you even know what that means BOTTOM BRACKET
not bearings
and no it dosnt put more pressure on them
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Old 12-10-08, 09:00 PM   #10
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A smaller ratio (ex: 25/10) accelerates easily, but tops out earlier than a large ratio. A larger ratio (ex: 30-10), on the other hand, attains higher speeds, but accelerates more slowly. Depending on what speed you're riding at, a smaller ratio may be easier or harder to pedal.

There are bearings in a bottom bracket kit, along with spacers. A smaller ratio won't put more pressure on the bearings, but it can lead to them getting blown out, although this isn't really an issue unless you have a European bottom bracket.
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Old 12-11-08, 01:58 AM   #11
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And just to keep things fun and confusing, for the same ratio, smaller gears (eg 22/8 vs 44/16) will put more load on each tooth and chain link, cause there's less there to distribute it over, leading to faster chain/sprocket wear. Be careful with your terminology.
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