Obnoxious Oscillating Hum....
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,295
Likes: 6,322
From: Honah Lee
May be tinnious. Does it quite when you stop? On a serious side, can't believe I am say this but your exhaust is too quite.
A shot of talicum on the belt will act as a short term lubrication to eliminate that as the reason. Too clean a belt will make a noise if you are on a narrow street between buildings.
A shot of talicum on the belt will act as a short term lubrication to eliminate that as the reason. Too clean a belt will make a noise if you are on a narrow street between buildings.
Last edited by Jackie Paper; Jan 24, 2018 at 02:53 PM.
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Road Warrior
Joined: Oct 2015
Posts: 1,333
Likes: 355
From: San Diego
Replaced tires. Still hums. They're balanced. Checked tire alignment, it's good. The noise is related to speed and increases on curves.
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Seasoned HDF Member
Joined: Aug 2006
Posts: 24,418
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From: Pennsylvania
Because you said it is on two of your bikes: do you do your own adjustment on the belt tension? Belt too tight or belt too loose perhaps. Try cleaning the sides of your belt and take it for a ride. Too tight and it may be strumming like a guitar string. The engine alignment changes because the way it sits on the rubber mounts in relation to the rear swingarm. I doubt your bearings on both the bike would be going bad unless you did something to both of them at the same time.