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Changing sprocket teeth. Who's done it?

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Old 12-16-2010, 05:04 PM
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Default Changing sprocket teeth. Who's done it?

Thinking about changing gearing my 2011 CVO SG. What are the pluses and minus' of such a move. One mecanic told me you have to have a special belt and it's expensive, plus you need a spare to keep with you on long trips. And how many teeth do you drop? Speedo calibration?
Gary
 
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Old 12-16-2010, 05:30 PM
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Did the 49 tooth to my 08 and love it. Best money I have ever spent. Dawg might chime in as I think he did the same thing. Changed my speedo cal with the tmax and all is working just fine. I guess it depends on your tuner and such. I think no matter which way you go you will mess with the speedo cal. Don't quote me though. The Tmax is a great unit. I am thinking there is also another tuner you can do it with though to.
 
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Old 12-16-2010, 07:47 PM
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3 ways to change it with primary smaller front gear (but you lose the compensator)next is bigger gear on cluth basket only real drawback is u may lose cruise unless you tune with tmax or tts.other is smaller front pully belt can be a drawback although some have used the stock belt.
 
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Old 12-16-2010, 10:30 PM
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Originally Posted by bigdumbnoitall00
3 ways to change it with primary smaller front gear (but you lose the compensator)next is bigger gear on cluth basket only real drawback is u may lose cruise unless you tune with tmax or tts.other is smaller front pully belt can be a drawback although some have used the stock belt.
what do u mean he will lose the compensator ? can u give me alittle more info
 
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Old 12-16-2010, 11:53 PM
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I've changed the stock 32 tooth tranny pulley to a 30 tooth pulley. I had to install a new 07 Sporty belt to make it work though. The stock belt is 137 teeth and the sporty belt is 136 teeth (I'm almost positive but check to make sure). Either way you only need to drop one tooth.

Lots more torque where I like it. I can use 6th gear at 62 MPH with out lugging the engine. It did throw the speedo off by 4 MPH and I live with that.

DaFish
 
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Old 12-17-2010, 03:27 AM
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Probably the best way to change gearing is as DaFish has. You get a 32/30 = 107%, in other words 7% increase in rear wheel torque, which is well worth having over and above any tuning mods you may have.

Harley use a new design of compensator for the TC96, compared with the TC88 and earlier bikes and it will not 'fit' into a smaller sprocket. A 30T is available, but it doesn't have the compensator. A larger clutch sprocket is available but expensive.
 
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Old 12-17-2010, 03:54 AM
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grbrown thanks, i have an 06 roadking and was thinking about the sproket change myself, but to a 24 tooth front and 37 tooth basket.
 
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Old 12-17-2010, 04:44 AM
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Originally Posted by STUNU
grbrown thanks, i have an 06 roadking and was thinking about the sproket change myself, but to a 24 tooth front and 37 tooth basket.
My pleasure! You are much better off than owners of TC96s, so can change your gearing more easily and cheaper than them. I have a 21T on my Dyna and that really wakes it up! I suggest you leave your basket stock (that is expensive to replace) and use a 23T front. You may also need a slightly shorter chain, but that is comparatively cheap.

Changing to a 23T from a 25T will give you 25/23 = 109% or a 9% increase in rear wheel torque. It will change engine speed in top from say 2,500 to 2,500 x 1.09 = 2,717rpm. A 24T will give roughly half those changes and changing the clutch from 36 to 37 will have only a very small change. Not worth the cost!
 
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Old 12-17-2010, 05:41 AM
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grbrown do u have the part num. for the 24 t compensator and the chain, i might go that way. i ride 2up most of the time.
 

Last edited by STUNU; 12-17-2010 at 05:43 AM.
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Old 12-17-2010, 06:17 AM
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Originally Posted by STUNU
grbrown do u have the part num. for the 24 t compensator and the chain, i might go that way. i ride 2up most of the time.
No I don't, sorry about that. The 21T kit in my Dyna is a boxed SE part, but the 24T is something you'll have to look out. Baker certainly make them and may be able to supply a chain as well.

This conversion has come up before on HDF, so do a search on 'compensator' to see what other members have done. It won't take long to answer your question. Best of luck!
 
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