2018+ Softail Models Breakout

Faint squeak/chirping under acceleration

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Old Apr 7, 2024 | 10:14 AM
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Default Faint squeak/chirping under acceleration

Hi folks

RecentlyI’ve noticed a faint (but more noticeable to me now every time I ride) squeaking/chirping/twittering sound from the bike under acceleration. Seems to be the left-hand side and mid-to-rear… but it’s hard to pinpoint when riding.

At idle/at stand-still, there’s no noise.

If i pull the clutch in and coast along, I ‘think’ it goes away.

Doesn’t seem like it’s the engine (idles fine with no odd noise) or wheels (seems to go if I pull the cutch in), so wondering if maybe it’s something to do with the drive belt?

Any other ideas where I could start looking or maybe think to mention if/when I take it into HD (it’s still under approved/used warranty from when I bought it in Oct)
 

Last edited by stinkerbill; Apr 7, 2024 at 10:15 AM.
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Old Apr 7, 2024 | 10:45 AM
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Maybe the belt?
 
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Old Apr 8, 2024 | 06:29 AM
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Originally Posted by GalvTexGuy
Maybe the belt?
My thinking too. Check your belt tension and make sure it's in spec.
 
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Old Apr 8, 2024 | 12:56 PM
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Your belt it too tight or too loose. Most likely too tight. I found the recommended specification is too tight and remember, the belt will get tighter as the engine/transmission heats up.
 

Last edited by Uncle G.; Apr 8, 2024 at 12:58 PM.
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Old Apr 8, 2024 | 01:35 PM
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Originally Posted by stinkerbill
Hi folks

RecentlyI’ve noticed a faint (but more noticeable to me now every time I ride) squeaking/chirping/twittering sound from the bike under acceleration. Seems to be the left-hand side and mid-to-rear… but it’s hard to pinpoint when riding.

At idle/at stand-still, there’s no noise.

If i pull the clutch in and coast along, I ‘think’ it goes away.

Doesn’t seem like it’s the engine (idles fine with no odd noise) or wheels (seems to go if I pull the cutch in), so wondering if maybe it’s something to do with the drive belt?

Any other ideas where I could start looking or maybe think to mention if/when I take it into HD (it’s still under approved/used warranty from when I bought it in Oct)

Is it throttle dependent? My Road Glide and LRS both made "chirping" sounds from the intake while under throttle, even when cruising with a steady throttle input. Took me a while to figure it out.

It was more noticeable on both bikes when I installed larger/aftermarket air filters
 
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Old Apr 8, 2024 | 02:13 PM
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Similar problem. It was a loose belt guard rubbing the tire. Blew tire at 50 mph. Bit of a thrill.
 
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Old Oct 19, 2024 | 12:15 AM
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Forgot about this post! The dealer adjusted the belt and rear wheel alignment when it was in for a service - no more noise
 
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