8BU-10 15.6 mm rollers vs 14.5

WNR18

New member
Joined
Jan 4, 2009
Messages
59
Age
44
Location
Tisdale Sk
Sled 2000 SRX 144 1 3/8 lug
23/39 9 inch
45 ramp with Yamaha pink
8BU-10 with 2.4 inner 4.5 outer
Y-P-Y or B-P-B depending on the temp

sled works well on and off trail. Runs 8500 till about 110 -120 km/h. Over revs 200 -300 past that. Tried a silver spring to cure this but back shift suffers. Usually have the twist at 60 -70.

I have read about bout putting a washer under the rivet in the tip. Will try sometime

I have another set of 8BU-10s empty. I was thinking about swapping out the 15.6mm for 14.5 mm and starting with empty 10s and tune from there. Any thoughts?
 

what about a different helix. maybe a progressive multi/ angle with a finish that will load motor more on peak rpm. 3:16x (yammie tony)
 


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