Thinking changing trans pulley for better lowend ?
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Seasoned HDF Member
Joined: Jan 2010
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From: usa
Thinking changing trans pulley for better lowend ?
I have 2005 Deuce and I'm thinking of going to a andrews 29 tooth pulley for better acceleration part #H8-455-29 in the dennisk cat. ? is will I have to change my drive belt. Or can I pull this off with just making a belt adjustment ? The belt/bike only has 6000 on it and this would stop the job.
Club Member
Joined: Mar 2009
Posts: 66,136
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From: Niles Canyon Ca.
You may want to some reading through this web site , they have all kinds of fun reading for tweaking things for your bike and lots info charts on things like pulley sizes verse belt lengths & center distances on different configurations .
http://www.nightrider.com/biketech/calc_gearratios.htm
Also BDL's website had a couple nice charts also . Between the two you can get a real time idea what the results will be for a change before you commit . Use this chart for rough guide to start .
http://www.beltdrives.com/Install%20...e%20Ratios.pdf
http://www.nightrider.com/biketech/calc_gearratios.htm
Also BDL's website had a couple nice charts also . Between the two you can get a real time idea what the results will be for a change before you commit . Use this chart for rough guide to start .
http://www.beltdrives.com/Install%20...e%20Ratios.pdf
Club Member
Joined: May 2007
Posts: 145,895
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From: 40 miles Northeast of Indy..
Be sure to read up.. seems like just this past summer another member went to a 30 tooth and now is bitchen bout his bike being rev-ed way to high at 70 mph.
Just double check Ur ratios before doing all the work and $$$$$..
Just double check Ur ratios before doing all the work and $$$$$..
Thread Starter
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Seasoned HDF Member
Joined: Jan 2010
Posts: 7,393
Likes: 3,358
From: usa
You may want to some reading through this web site , they have all kinds of fun reading for tweaking things for your bike and lots info charts on things like pulley sizes verse belt lengths & center distances on different configurations .
http://www.nightrider.com/biketech/calc_gearratios.htm
Also BDL's website had a couple nice charts also . Between the two you can get a real time idea what the results will be for a change before you commit . Use this chart for rough guide to start .
http://www.beltdrives.com/Install%20...e%20Ratios.pdf
http://www.nightrider.com/biketech/calc_gearratios.htm
Also BDL's website had a couple nice charts also . Between the two you can get a real time idea what the results will be for a change before you commit . Use this chart for rough guide to start .
http://www.beltdrives.com/Install%20...e%20Ratios.pdf
Last edited by Iron lHorse; Jan 26, 2012 at 10:28 PM.
Novice
Joined: Jan 2012
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From: Mechanicsville, va
I have a 96 heritage with the 80 evo...5 speed, I bought the bike with a 29T pulley...way to low going to 34T...u might want reconsider unless u just ride around town ....i want to say it is about 3-5% per tooth on every thousand rpm
Novice
Joined: Jan 2012
Posts: 17
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From: Mechanicsville, va
Also I am running a stock belt.....pain in the *** to change pulley out too, had to buy a inner race bearing puller to change mine..run about 150 bucks for tool..u might not need one on your bike......u might want to check on that too..
Novice
Joined: Jan 2012
Posts: 17
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From: Mechanicsville, va
I have a 96 heritage with the 80 evo...5 speed, I bought the bike with a 29T pulley...way to low going to 34T...u might want reconsider unless u just ride around town ....i want to say it is about 3-5% per tooth on every thousand rpm
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Club Member
Joined: Mar 2009
Posts: 66,136
Likes: 51,475
From: Niles Canyon Ca.
The nightriders site has another calculator for figuring final ratio's and what the work to in RPM's at set MPH play with that one a bit it's educational .
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Thread Starter
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Seasoned HDF Member
Joined: Jan 2010
Posts: 7,393
Likes: 3,358
From: usa
One tooth will have an impact of around 200 rpm or so and at 70mph that's very noticeable both in sound and overall bike feel like vibration . Think this over a bit the model doesn't have dick to do with the numbers , basic mechanics don't change any .
The nightriders site has another calculator for figuring final ratio's and what the work to in RPM's at set MPH play with that one a bit it's educational .
The nightriders site has another calculator for figuring final ratio's and what the work to in RPM's at set MPH play with that one a bit it's educational .
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Joined: Jan 2007
Posts: 1,658
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From: NorNev
I went from a 32t to a 30t pulley on my Dyna but it is a '06 with a six speed trans. Now I am able to use 6th easier on the highway. Of course acceleration is better. Not sure if I would do this on a five speed. BTW - no belt change.
More info and opinions here.
https://www.hdforums.com/forum/dyna-...y-install.html
https://www.hdforums.com/forum/dyna-...y-install.html
More info and opinions here.
https://www.hdforums.com/forum/dyna-...y-install.html
https://www.hdforums.com/forum/dyna-...y-install.html