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  #1  
Old 13th August 2018
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Default compensator

dear HD
i would like to know why Jap models of Sporty have a compensator in the rear sprocket... and all the other models not...

i think a compensator is a good item to have in this way a belt drive that last longer...
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  #2  
Old 15th August 2018
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Yep, i would like to know also.
May be it's all stop/start there.
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  #3  
Old 15th August 2018
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some info

http://xlforum.net/forums/showthread.php?t=158580
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  #4  
Old 15th August 2018
Four Speed Four Speed is offline
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Good question Nibelungen and an interesting thread b0fh. I have a chain drive 88 which I think would have benefited from a compensator
to provide a little cushioning in the transmission, so the bearings, gears and clutch basket get an easier time of it. BT's have the compensator
sprocket. I fitted a Hayden tensioner as a simple bolt in experiment. Essentially, it is a spring loaded tensioner. Gear changes are easier and
downshifts are less abrupt. I'm happy with it. I am not sure if it matters where in the transmission the cushioning is situated as much as there
is some cushioning; folks may have thoughts on that.
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Old 15th August 2018
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Yes, interesting thread b0fh.

This seams to sum up the probable reason for it being Japan only:

Quote:
Originally Posted by Green hornet View Post
My guess as to why only Japan gets them is that they love the look of an HD, but not the rough ride. All the Japanese bikes run smooth as sewing machines, and they aint buying bikes that have driveline lash.
I can't help but agree with this:

Quote:
Originally Posted by skratch View Post
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.
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Old 15th August 2018
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If a compensator in the rear sprocket is the same thing as the the rubber cush drives in some of the old japanese bikes then they can keep it over there. The rubber would wear and get sloppy and ADD slop to the driveline. I never liked them. It always felt like your chain was loose.
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Old 15th August 2018
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I don't know...
Not all Jap's bikes behave like sewing machines... believe me...

Sporties have a little compensator in the transmission (grenade clutch)... even japanese versions

I wonder really the reason for that compensator... maybe something to do with circulation cards laws

Last edited by Nibelungen; 15th August 2018 at 21:21..
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Old 15th August 2018
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Quote:
I wonder really the reason for that compensator.
The cush drive or compensator reduces the peak loadings which should be a good thing for the durability of the
transmission components. It can also reduce vibration. Maybe the question should be why wouldn't you fit one?
HD fit compensators on the BTs...........
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  #9  
Old 16th August 2018
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Quote:
Originally Posted by Four Speed View Post
The cush drive or compensator reduces the peak loadings which should be a good thing for the durability of the
transmission components. It can also reduce vibration. Maybe the question should be why wouldn't you fit one?
HD fit compensators on the BTs...........
Yes... i knew... i was meaning why compensator only on japs...
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  #10  
Old 16th August 2018
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The 4 cyl Kaws run super smooth in the engine and tranny, and still have cush drives on the rear wheel. The HDs running more roughly seems like a bad reason to do it there and not here if that's the big complaint. We get the rubber on the US model Ninjas, and as mentioned, the US BTs.

Other than the big Japan pulley being uglier, I wouldn't have any objection to having something in there. The spring plate in the clutch is a terrible way to do it if that's the sole purpose of that thing.
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