2018+ Softail Models Breakout

M8 Softails and Buzzing

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Old Sep 10, 2022 | 12:10 PM
  #11  
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I put 12” Carlini apes on my bobber but I also replaced the riser bushings with alloy arts, I don’t get any kind of vibration like you describe. I do however get vibration and rattle from my stock gas cap.
 
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Old Sep 11, 2022 | 07:51 AM
  #12  
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Originally Posted by Tha_Big_Ohh
I put 12” Carlini apes on my bobber but I also replaced the riser bushings with alloy arts, I don’t get any kind of vibration like you describe. I do however get vibration and rattle from my stock gas cap.
a center punch on the bottom lip does wonders for that.
 
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Old Sep 13, 2022 | 08:59 AM
  #13  
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I had the buzz on both my 2018 Street bob and 2019 Sport glide - in both cases it was the gas cap. Changing to the flush mount cap fixed it on both
 
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Old Sep 15, 2022 | 09:20 AM
  #14  
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I've owned two M8 Heritages, an M8 Low Rider and an M8 Sport Glide. They were all buzzy at highway speeds. Especially noticeable in the mirrors.
 
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Old Sep 17, 2022 | 06:44 AM
  #15  
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I test rode an Electra Glide Standard couple days ago and I have to admit it was way smoother than my Heritage 114 at 80 mph+.

Then again, it turned like a Sherman tank.
 
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Old Sep 21, 2022 | 09:40 AM
  #16  
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If you replaced the cam, that can also increase the vibration. I could tell the difference with the torque cam on my SG.
 
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Old Sep 21, 2022 | 06:54 PM
  #17  
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Originally Posted by cobalt07
If you replaced the cam, that can also increase the vibration. I could tell the difference with the torque cam on my SG.
Yep cam makes a big difference, my 128 build had a cam with real bad vibes, ended up with a SE517= smoother than stock
 
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Old Sep 22, 2022 | 05:11 PM
  #18  
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Originally Posted by tmac00333
I test rode an Electra Glide Standard couple days ago and I have to admit it was way smoother than my Heritage 114 at 80 mph+.

Then again, it turned like a Sherman tank.
Two completely different frames, shocks and M8 motors.
 
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Old Sep 22, 2022 | 05:26 PM
  #19  
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Originally Posted by dennyo
These are the ones I use , They help with less vibration


Trying to get these installed on my 2022 Low Rider ST but it is not going smoothly.

The throttle side is no problem. On the clutch side, I have the large portion of the flange down as it is supposed to be and the Avon logo is at 12 o'clock. However even with the grip tight in the clam shell, and torqued to specs, I can still rotate the clutch grip approximately 1/8" forward and back. I have disassembled and reassembled numerous times, tried rotating the grip slightly either way before tightening and it seems to be in the correct spot. I also loosened the perch mounts to make sure nothing is binding and it is all lined up.

It appears to me that the plastic grip inner ridge may be slightly too large. It allows to the switch housing to almost close completely but it is keeping it ever so slightly open so that it cannot clamp down 100% and lock the clutch grip solidly in place. It just twists forward or back a small amount.


 
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Old Sep 22, 2022 | 05:43 PM
  #20  
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Originally Posted by JakeC7R
Trying to get these installed on my 2022 Low Rider ST but it is not going smoothly.

The throttle side is no problem. On the clutch side, I have the large portion of the flange down as it is supposed to be and the Avon logo is at 12 o'clock. However even with the grip tight in the clam shell, and torqued to specs, I can still rotate the clutch grip approximately 1/8" forward and back. I have disassembled and reassembled numerous times, tried rotating the grip slightly either way before tightening and it seems to be in the correct spot. I also loosened the perch mounts to make sure nothing is binding and it is all lined up.

It appears to me that the plastic grip inner ridge may be slightly too large. It allows to the switch housing to almost close completely but it is keeping it ever so slightly open so that it cannot clamp down 100% and lock the clutch grip solidly in place. It just twists forward or back a small amount.

I installed those same grips and they did the same thing.
Ended up snugging the screws down till the housing tightened.
all good now.
 
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