Front end singing noise - Page 2 - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #11 of 15 (permalink) Old 04-02-2019, 12:50 PM Thread Starter
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Just a quick update, the noise was the tire. I changed it and now the noise is gone completely. It is now quiet enough that I can make out a similar noise coming from the rear tire. Changing it next.
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post #12 of 15 (permalink) Old 04-02-2019, 03:25 PM
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are the tires due for a change?

now can you stop by a figure out why my VS650 has that beat frequency hum?

Hmmmmmm? Hmmmmmm? Hmmmmmm?
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post #13 of 15 (permalink) Old 04-04-2019, 06:18 AM Thread Starter
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Originally Posted by KCW View Post
are the tires due for a change?

now can you stop by a figure out why my VS650 has that beat frequency hum?

Hmmmmmm? Hmmmmmm? Hmmmmmm?
Wish I could help KCW, but I am very sure you know more about motorcycles than I do.

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post #14 of 15 (permalink) Old 04-04-2019, 09:35 AM
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are the tires due for a change?

now can you stop by a figure out why my VS650 has that beat frequency hum?

Hmmmmmm? Hmmmmmm? Hmmmmmm?
Harmonics !
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post #15 of 15 (permalink) Old 04-04-2019, 10:43 AM
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a beat frequency happens when you have two things spinning at nearly the same RPM

if your front tire is spinning at 30rpm and your back tire at 31rpm, and making a sound, the two will beat against each other and create 61 rpm, and 1rpm beat frequencies (3721 Hz and 60Hz)

this is what you hear on old 4 engine propeller planes, that Rummm Rummmm Rummm Rummm drone every second.

Maybe it is my tires - they are not the same size, will have to take a tape measure to my wheels this weekend and do the math....
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