Transfer Issue
#11
03-11-2019, 12:52 PM
#14
03-11-2019, 08:50 PM
Cruiser
I ordered the new clutch rod from Greg Williams last fall but didn't install it yet, too cold. But did I read on another thread their was a new variant of the fat clutch rod that had better contact points possibly? I messaged Greg a few days ago but never got a reply. Is he out of the clutch rod businesses now?
#15
03-12-2019, 09:14 PM
Seasoned HDF Member
I haven’t seen any description on why the “fat flat rode” works.
I’m thinking that since the issue is due to a lower pressure developing in the primary, it sucks from the transmission. Maybe some primaries leak a little pressure, and thereby didn’t develop enough vacuum to suck from the transmission. The flat side of the rod allows pressure equalization between the primary and transmission. They make it a bit thicker, because the stock rod does not have enough material thickness to create the needed flat, and it would also weaken it....
But, I could be wrong...I thought I was once...but I was mistaken. So now I am..
I’m thinking that since the issue is due to a lower pressure developing in the primary, it sucks from the transmission. Maybe some primaries leak a little pressure, and thereby didn’t develop enough vacuum to suck from the transmission. The flat side of the rod allows pressure equalization between the primary and transmission. They make it a bit thicker, because the stock rod does not have enough material thickness to create the needed flat, and it would also weaken it....
But, I could be wrong...I thought I was once...but I was mistaken. So now I am..
Anyway the thinner pushrod has enough clearance to allow the pulses to do their work. Fatter PR is 44% heaver and the clearance around the rod is decreased from about 38 thou to say 6 thou.. No sucking action gets through.
#16
03-13-2019, 04:52 AM
Outstanding HDF Member
The following users liked this post:
madmat (03-17-2019)
#17
03-13-2019, 06:50 AM
Club Member
The following 2 users liked this post by hellonewman:
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#18
03-13-2019, 12:48 PM
Long story short..... It doesn't suck! LOL
Well IMO, It's pressure variations stemming from the Slip-assist pressure plate changing clamping load plus possibly some additional pulses from mainshaft seal flex / leakage. Pulsations are caused by resulting forces the power stroke and slowing on compression for upstroke. Flywheels do not spin at a constant speed. That's why these bikes need compensators.
Anyway the thinner pushrod has enough clearance to allow the pulses to do their work. Fatter PR is 44% heaver and the clearance around the rod is decreased from about 38 thou to say 6 thou.. No sucking action gets through.
Anyway the thinner pushrod has enough clearance to allow the pulses to do their work. Fatter PR is 44% heaver and the clearance around the rod is decreased from about 38 thou to say 6 thou.. No sucking action gets through.
