Slipper Clutch Use
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Road Warrior
Joined: Sep 2016
Posts: 1,395
Likes: 364
From: Okmulgee
Slipper Clutch Use
Is anybody getting real use out of the slipper clutch in our M8's? Mine does not seem to work at all. In the wet nothing. In the dry down shifting going into a corner on the aggressive side of life rear wheel hop or rear wheel tire howl seem to be the norm.
Is it the useless oem tire or over simplified design, engineering or execution on HD's part? It's like what slipper clutch.
Is it the useless oem tire or over simplified design, engineering or execution on HD's part? It's like what slipper clutch.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,476
Likes: 3,003
From: Charleston, SC
If you'd ridden a previous year touring bike without one (aggressively) you can tell the slight difference. Mine is working fine.
Normal every day popping the clutch out on a downshift is now much smoother; however, you can still hop the rear tire if you downshift hard (too low ratio for speed). It can only do so much...
Also: The slipper clutch has nothing to do with wet or dry pavement. It's about smoothing out the difference between trans/engine vs tire speed during down shifting although it does apply clamping force during acceleration as well.
Normal every day popping the clutch out on a downshift is now much smoother; however, you can still hop the rear tire if you downshift hard (too low ratio for speed). It can only do so much...
Also: The slipper clutch has nothing to do with wet or dry pavement. It's about smoothing out the difference between trans/engine vs tire speed during down shifting although it does apply clamping force during acceleration as well.
Last edited by lp; Aug 13, 2017 at 08:54 AM.
Advanced
Joined: Jul 2017
Posts: 98
Likes: 45
From: Todd NC
I had an 06 flhti for 7 yrs and then went to a 2014 Night Rod Special with the slipper clutch. As for my 2017 FLTRXS the master tech at the dealership where I bought it mentioned it's a slip and assist clutch and definitely not a slipper clutch. Found this online which may explain it a bit better.
The slip-assist APTC has a helix on the internal hub that basically screws the clutch together under power (augmenting the spring force) and unscrews under deceleration, effectively opening the clutch and allowing it to slip.
The slip-assist APTC has a helix on the internal hub that basically screws the clutch together under power (augmenting the spring force) and unscrews under deceleration, effectively opening the clutch and allowing it to slip.
Road Master
Joined: Mar 2017
Posts: 760
Likes: 273
From: Olympia, WA
If you'd ridden a previous year touring bike without one (aggressively) you can tell the slight difference. Mine is working fine.
Normal every day popping the clutch out on a downshift is now much smoother; however, you can still hop the rear tire if you downshift hard (too low ratio for speed). It can only do so much...
Also: The slipper clutch has nothing to do with wet or dry pavement. It's about smoothing out the difference between trans/engine vs tire speed during down shifting although it does apply clamping force during acceleration as well.
Normal every day popping the clutch out on a downshift is now much smoother; however, you can still hop the rear tire if you downshift hard (too low ratio for speed). It can only do so much...
Also: The slipper clutch has nothing to do with wet or dry pavement. It's about smoothing out the difference between trans/engine vs tire speed during down shifting although it does apply clamping force during acceleration as well.
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
I rev match my 2017 FLHXS even with the slipper clutch, downshifting is as smooth as silk.
I did a double down shift, one time by error, and the slipper clutch did not allow the rear wheel to lock up at all.
I've double downshifted on my 2015 Heritage, by error' and the rear wheel does lock up and the tire chirps in protest.
I did a double down shift, one time by error, and the slipper clutch did not allow the rear wheel to lock up at all.
I've double downshifted on my 2015 Heritage, by error' and the rear wheel does lock up and the tire chirps in protest.
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