Transfer Issue
Road Master
Joined: Dec 2016
Posts: 956
Likes: 144
From: Old Bridge, NJ
Unbelievable
Cruiser
Joined: Mar 2014
Posts: 102
Likes: 33
From: rapid city
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?
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,899
Likes: 8,006
From: poway
I havent seen any description on why the fat flat rode works.
Im 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 didnt 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..
Im 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 didnt 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.
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,791
Likes: 690
From: Smalltown,USA
You should never speak to him again,you can't fix stupid.
Seasoned HDF Member
Joined: Jun 2015
Posts: 8,055
Likes: 8,080
From: Canada
Sorry, couldn't resist.
6th Gear
Joined: Aug 2018
Posts: 12
Likes: 0
From: Roanoke, VA
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.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
