Clutch Comparison - Stock vs Barnett - 1130cc.com: The #1 Harley Davidson V-Rod Forum
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Old 02-16-2008, 02:27 AM   #1
sparks'n'dust
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Thumbs up Clutch Comparison - Stock vs Barnett

I installed my new Barnett Kevlar Extra Plate Kit yesterday, and took some measurements to compoare the difference between the two, so here goes.

Steel Plate Thickness, Stock - 2mm/0.785" (x8) = 16mm/0.630"
Barnett - 1.4mm/0.055" (x5)+
1.2mm/0.047" (x4) = 11.9mm/0.458"

Fibre Plate Thickness, Stock - 3.80mm/0.150" (x9) = 34.6mm/1.36"
Barnett - 3.84mm/0,151" (x10) = 38.4mm/1.51"


Total Stack Hight, Stock - 50.6mm/1.992"
Barnett - 50.3mm/1.980"


Spring Free Lenght, Stock - 44.3mm/1.745"
Barnett - 45mm/1.772"

Spring Wire Gauge, Stock - 2.92mm/0.115" (6 winds)
Barnett - 2.92mm/0.115" (5 winds)



Keeping in mind my clutch has been slipping for a while, so is worn out.
The fibre plates came out looking still ok, but I dont know the spec, so assume they are thinner than should be!
The steel plates were burnt and discoloured, but not nearly as bad as I have seen before.
I also ran 3mm stainles spacers underneath my stock springs to give them a bit more preload, and decided to re-use them with my new, slightly stiffer Barnett springs, without worry of coil bind as they have only 5 turns as opposed to stock springs that have 6 turns and therefore less gap between turns. I never experienced drag with this mod.
I also decided NOT to re-install the anti-rattle spring washer and spring seat.
Have not taken it for a spin yet, still want to remove the master cylinder and give it a good clean and bleed the system with nice fresh new fluid!
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Old 02-16-2008, 06:57 AM   #2
BrianVRSCR
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Get one of the new '08 Slipper Clutches. Best thing I have seen so far
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Old 02-23-2008, 03:13 AM   #3
sparks'n'dust
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I like the chattering of the rear tire on hard downshifts!!!
I also shift down clutchless mostly.
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