Compensator sprokets change
Cruiser
Joined: Jan 2011
Posts: 226
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From: Fort Collins Colorado
Awesome site thanks. I think two might be the answer. Thats 19 % to the rear wheel.I live in colorado and ride mountains and light to light city, would love it to roll on real hard. Only long rides i do are to sturgis, but thats only 5 1/2 hrs from the house and i am pinned anyway.
Doesn't seem to hard to change either. Gonna order sprocket and chain.
Thanks alot. I am new to this forum and very thankful for all f your help.
Doesn't seem to hard to change either. Gonna order sprocket and chain.
Thanks alot. I am new to this forum and very thankful for all f your help.
Cruiser
Joined: Jan 2011
Posts: 226
Likes: 0
From: Fort Collins Colorado
We usually go down one tooth on the tranny sprocket. That gets back some of the bottom end without sacrificing too much top end. Going down one tooth on the compensator would do the same thing. However it would also make the starter work harder. Remember the starter turns the clutch shell, which turns the engine over by turning the compensator. By going smaller you are losing mechanical advantage and the engine will crank a little harder/slower. Everything has a trade off.
If you have an electric speedometer and change the compensator, the speedometer will still be correct. If you change the tranny sprocket it will be off and a speedometer calibrator will have to be installed. Hope this helps.
If you have an electric speedometer and change the compensator, the speedometer will still be correct. If you change the tranny sprocket it will be off and a speedometer calibrator will have to be installed. Hope this helps.
Outstanding HDF Member
Joined: Mar 2010
Posts: 2,877
Likes: 2
From: Hallsville, Tx.
Attached a nice calculator below, owners of the newer 6 speed Twinkees drop 2 teeth on the trans pulley to make 6th gear more useable, 99-01 efi big bikes have the primary front sprocket down one and the clutch sprocket up one tooth to get 3.34 and seems to be a gear ratio that several duplicate.
I agree with John on the 1 tooth drop for 5 speeds but with a 6 speed, the 2 tooth drop would work, I have both the 2 tooth primary change and the 30 trans gear with the 5 speed but my riding style is country roads, hills, run hard, big bike, big rider. Another gear would be ideal for my setup but still lives at 65 mph but as other mentioned, consider your riding style, engine output but if you like to accellerate, the 2 tooth drop is your choice.
http://bigboyzheadporting.com/Gearratio.htm
I agree with John on the 1 tooth drop for 5 speeds but with a 6 speed, the 2 tooth drop would work, I have both the 2 tooth primary change and the 30 trans gear with the 5 speed but my riding style is country roads, hills, run hard, big bike, big rider. Another gear would be ideal for my setup but still lives at 65 mph but as other mentioned, consider your riding style, engine output but if you like to accellerate, the 2 tooth drop is your choice.
http://bigboyzheadporting.com/Gearratio.htm
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,077
Likes: 2,148
From: Ohio
Some nice calculators on that site 96Roadking.
Rmuller, I checked your stock 1 to 1 final drive ratio and at 2.92, 2 teeth change will put you at 3.17 1 to 1 ratio which is stock range on a big bike, you would still be in good shape at interstate speeds with a 5 speed alone the OD 6 speed.
Going to have to rely on John's experiance on the stock starter load, might be a good time to put a nice starter in when removing the clutch basket to install the primary chain but we are good at spending other peoples money.
Let us know of your results!
Rmuller, I checked your stock 1 to 1 final drive ratio and at 2.92, 2 teeth change will put you at 3.17 1 to 1 ratio which is stock range on a big bike, you would still be in good shape at interstate speeds with a 5 speed alone the OD 6 speed.
Going to have to rely on John's experiance on the stock starter load, might be a good time to put a nice starter in when removing the clutch basket to install the primary chain but we are good at spending other peoples money.
Let us know of your results!
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Yes it will be working harder as it will lose mechanical advantage and could give you some trouble, either now or later. You don't gwt anything for free, if you reduce the gear ratio by 19% the starter will have to work taht much harder. The tranny sprocket does not do that.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
Let's step back for a moment chaps! Rmuller, sounds as if your bike has stock gearing, except the addition of sixth gear. In other words, your fifth is the same as a stock top gear for a five-speed box. Adding sixth significantly increases overall gearing.
When your bike was built, it already had very high gearing, to help it meet noise emissions regulations. Sixth gear has just made that problem yet worst. On my 2003 Dyna I have replaced the stock 25T compensator with a 21T SE kit, which is the same as the 19% you mention. The bike rides just great! Theoretical top speed at peak rpm on stock gearing was around 140mph, it is now around 120mph, which is much more sensible. The bike is stock with stage 1 mods and the starter has never hinted that it has a problem!
Theoretical top speed of your bike in sixth is approx 140/.86, in other words over 160mph. That is a crippling level of gearing and will kill performance. If you chose the 19% option, in other words a 21T compensator, sixth will give you a theoretical top speed of around 136mph, while fifth will be similar to my 120mph. You will get substantially increased performance, while still having a pretty relaxing ride in sixth.
I suggest you leave the belt drive alone, as making changes there as well adds to the cost. You will need a shorter chain to go with your smaller compensator, but Baker may sell that as part of their package. Harley has an SE kit that does the same thing and includes both compensator and matching chain.
When your bike was built, it already had very high gearing, to help it meet noise emissions regulations. Sixth gear has just made that problem yet worst. On my 2003 Dyna I have replaced the stock 25T compensator with a 21T SE kit, which is the same as the 19% you mention. The bike rides just great! Theoretical top speed at peak rpm on stock gearing was around 140mph, it is now around 120mph, which is much more sensible. The bike is stock with stage 1 mods and the starter has never hinted that it has a problem!
Theoretical top speed of your bike in sixth is approx 140/.86, in other words over 160mph. That is a crippling level of gearing and will kill performance. If you chose the 19% option, in other words a 21T compensator, sixth will give you a theoretical top speed of around 136mph, while fifth will be similar to my 120mph. You will get substantially increased performance, while still having a pretty relaxing ride in sixth.
I suggest you leave the belt drive alone, as making changes there as well adds to the cost. You will need a shorter chain to go with your smaller compensator, but Baker may sell that as part of their package. Harley has an SE kit that does the same thing and includes both compensator and matching chain.
Last edited by grbrown; Jan 3, 2011 at 09:37 AM. Reason: Grammar!
Cruiser
Joined: Jan 2011
Posts: 226
Likes: 0
From: Fort Collins Colorado
Guys this is awesome thanks!! I mean really, thanks!!
Ok, Well i just ordered a set of 12" mx tbars. That was 276.
Next thing ill buy is a 2 up danny grey seat. Or maybe something on ebay. Badlander style.
Than the primary gear. Working on changing apperance to more modern and agressive. have 16" carlini apes on it now. Just bored of the relaxed look and feel.
The day i buy the gear and install it i will let ya know. Should be soon (month.)
I am thankfull
-Rudy
Ok, Well i just ordered a set of 12" mx tbars. That was 276.
Next thing ill buy is a 2 up danny grey seat. Or maybe something on ebay. Badlander style.
Than the primary gear. Working on changing apperance to more modern and agressive. have 16" carlini apes on it now. Just bored of the relaxed look and feel.
The day i buy the gear and install it i will let ya know. Should be soon (month.)
I am thankfull
-Rudy
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Feb 7, 2012 06:49 PM
2003, 24t, 25tcompensator, chain, change, changing, comp, compensator, dyna, gear, gearing, hd, ratio, sprocket, sprocket34t, transmission
