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Rubber Mount Sportster Motorcycle Talk (2004-2006) This area is to discuss issues, problems and anything else unique to the 2004 and above Sportster motorcycles

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  #1  
Old 8th February 2008
drinkchai drinkchai is offline
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Default Japanese Cush Drive!!

Found out after obtaining the 05 service manual that Japanese models have cush drive. The rear wheel is the same as US.

***Question: Has anyone made the conversion, & can you tell me how it feels like? How does it compare with a chain conversion?

Here are the part #:
40560-05 Compensator bowl
40561-05 Isolator (those rubber pieces)
3814 Screw/washer
40562-05 inner spacer
40518-05 Sprocket, black (choice of 2 colors!!!)
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  #2  
Old 9th February 2008
Laker Laker is offline
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no idea what you are talking about over
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  #3  
Old 9th February 2008
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melcheld melcheld is offline
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Is there really a need for it on a sporty?
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  #4  
Old 9th February 2008
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Quote:
Originally Posted by Laker View Post
no idea what you are talking about over
A "Cush" drive (common on Japanese bikes - not sure about others) cushions the shock of the driveline. Usually the sprocket bolts to the outer hub. The outer hub has large fins or vanes that "dovetail" with the wheel hub. Rubber blocks separate the dovetails.

I think V-Rods have them.

KongBastard
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  #5  
Old 9th February 2008
sprtrjl sprtrjl is offline
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I thought I just read in IronWorks mag. that the '08's all (I thought only BT's) had cush drive rear pulleys. Also as an upgrade for 07's.
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  #6  
Old 9th February 2008
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Not on XL's. My 1982 440 LTD did.
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  #7  
Old 9th February 2008
SCAGNETTI SCAGNETTI is offline
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the parts you are talking about are H.D.I parts. Harley Davidson International. Most likely they will fit the wheel, but what changes is gear ratio. How many teeth is the rear pulley and what pulley does it use on the trans. , Also how many teeth does the belt have? What are the dimensions on the pulley will it fit with all of your other components ? ie: belt gaurd, swingarm , wheel spacers. How wide is the belt? Also will your bike be on the highway at 65 mph at 6500 rpm? Seems like alot of trouble and money just for a cush drive? Really don't see the need for it on a sporty anyway. The bike is realtivley light as far as h-d goes. Also will you lose some snap on hard accelerations? Just my two cents.
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  #8  
Old 9th February 2008
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Quote:
Originally Posted by sprtrjl View Post
I thought I just read in IronWorks mag. that the '08's all (I thought only BT's) had cush drive rear pulleys. Also as an upgrade for 07's.
standard equipment on the 08 touring line up, and v-rods. is an accessory option for the 07 touring models. i have it on my road king and it works great, but if you aren't having any issues with your sporty, i wouldn't worry about it. i think it would be a lot of hassle to go through for little benefit. in fact, it may be worse off after (re: above post regarding teeth #, etc)
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  #9  
Old 9th February 2008
drinkchai drinkchai is offline
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The whole conversion costs $275 retail from Glendale Harley (SoCal). The sprocket ratio is the same as stock. No need to change anything else besides the parts I listed. Stock drive belt is reused. No fitment issues of any kind. Straight bolt on install.
No change in top speed or acceleration, except a much smoother ride, I think, I hope.
So why not? Better than chain conversion? No oily mess.
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  #10  
Old 9th February 2008
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so go for it and let everyone know how it does. on the touring bikes, it makes a huge difference. don't know if it would be as dramatic on the sporty, but don't see where it would hurt anything either.
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