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Sportster Motorcycle Drag Racing Discuss drag racing on a Sportster Motorcycle.

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  #1191  
Old 5 Days Ago
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Stock: 12 lbs. 17 3/4 in pivot to rear most axle position.

+4: 21lbs. 20 1/4 in pivot to rear most axle position.

+10 (jcros): (40+ lbs)on bike... 27 1/8 in pivot to rear most axle position.

+16 (New arm): 12.4 lbs. 33 3/4 in pivot to rear most axle position.



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  #1192  
Old 4 Days Ago
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Started tear down...



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  #1193  
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Quote:
Originally Posted by cycowrencher View Post
Started tear down...



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Sweet, whats your new w.b. going to be? Going to need a looooong chain !
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  #1194  
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Im 66.75 now. I have to go a minimum of +4 just to run the new arm so I will probably make it an even 72. We do not have a wheelbase limit in the classes I run out here. Probably also going to drop rear to a 46 or 44. That will help shorten chain.

Just eyeballed it all up...

69.5 minimum with buell s3 trees.
71 is roughly middle of adjuster range.
73 is max with chain still having adjustment room for stretch...

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  #1195  
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After a year of messing with the super d carb it all came down to running a two step to get the carb to hold rpm. Pretty excited
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https://youtu.be/37NNloLal78

I’m only light years behind xldukes and mac haha


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