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  #1  
Old 10th October 2020
Mike1nw Mike1nw is offline
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Default Replace sprocket

2007 883
Now is a good time to change sprocket
Present one is 28 teeth
I'm thinking maybe 30 t front and use same stock rear one?
That would cut highway RPM by 1/15.
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Old 10th October 2020
stikflote stikflote is offline
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Do you have to buy a Longer belt when changing sprocket to bigger size??
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Old 10th October 2020
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Default

Bikes that come stock with a 28T tranny sprocket have the 136T belt; those with 29T and 30T tranny sprockets have the 137T belt.

Which is not to say that you can't make do with the shorter belt. Some, apparently, have managed to do so.
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Old 11th October 2020
Mike1nw Mike1nw is offline
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Default

Offhand, if you add 2 teeth to the small sprocket, the belt "sees" only 1 extra tooth, on the sprocket, so I'm thinking the axle adjusters should be able to compensate for that. There seems to be room to move the axle that much.
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Old 11th October 2020
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I went from a 29 to a 28 and used the stock belt
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Old 15th October 2020
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Default Belt Vs front pulley size

Quote:
Originally Posted by stikflote View Post
Do you have to buy a Longer belt when changing sprocket to bigger size??
You can use up to 28, 29, 30, 31, or 32 tooth front pulley with the original belt, 136 or 137 tooth.
The 32T/136T uses all of the forward adjustment, but you can still properly adjust deflection.
The 32T front gives you almost the same final drive ratio as a 1200.
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Old 15th October 2020
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Quote:
Originally Posted by Sirrom1 View Post
You can use up to 28, 29, 30, 31, or 32 tooth front pulley with the original belt, 136 or 137 tooth.
The 32T/136T uses all of the forward adjustment, but you can still properly adjust deflection.
There's also a 139T 1" belt that's OE on Buells.
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Old 19th October 2020
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I've found several 30 or 31 or 32 t sprockets. All seem to be aluminum, where the stock one is steel..... Kind of nervous about replacing with Aluminum sprocket?
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Old 19th October 2020
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Going up from 28 > 30 also reduces torque in every gear by 6.7% (but it only matters in 1st gear and high gear).
Makes your 883 feel like 824cc.
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Old 25th October 2020
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Default Front Pulley Life

Quote:
Originally Posted by Mike1nw View Post
I've found several 30 or 31 or 32 t sprockets. All seem to be aluminum, where the stock one is steel..... Kind of nervous about replacing with Aluminum sprocket?
You can find 30, 31, & 32 tooth front pulleys in non-aluminum.
My personnal experience and confirmed in this Forum shows Aluminum pulleys that are 100%, the center splines fail about 10,000 miles. The aluminum pulleys with steel center, the belt teeth fail at at about 15,000.

Cast and steel pulleys can last over 100,000 miles.
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