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I understand the basics of the resonance and how it works.

Now the case is, there are vibrations from my motorcycle engine which then gets transferred to the handlebar. The motorcycle came with weighted bar ends (210gms each side) shown as number 2 in the given photo and it helps in reducing the handlebar vibrations a lot.

I thought why not add more weight,so I added additional weighted bar ends (180gms), shown as number 1 in the photo, along with the original bar ends (210 gms).

Ideally the vibrations should reduce, but what I observed was, drastic increase in the handlebar vibrations.

Anything I did wrong here? Shouldn't it be more the weight of the handlebar, lesser the vibrations?

enter image description here

Pᴀᴜʟsᴛᴇʀ2
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Coffee_lover
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2 Answers2

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Adding weight will change the resonant frequency of the handlebars, yes. But if the weight you added made that resonance closer to the problem frequency, then it can amplify them dramatically.

It is always worth experimenting with weights, but also steering dampers. Altering both can help you get rid of unwanted vibrations.

I'd be tempted to suggest it may not be the engine vibration that is the main problem, after all you can always ride at different rpm. Is there a specific frequency that issues happen? Look at the rest of the bike as well.

Rory Alsop
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Me too facing the problem of vibrations at the handlebar when I changed the stock one with an after market handlebar which is heavier in weight.Fixed the same with stock bar end weights, But the Handle bar tends to vibrate at 3000 rpm which creates numbness in fingers when I go for a long ride. Realized this is because of a heavier handlebar with a heavier bar end. So I removed the bar end weights on both sides. Now the vibration is not there.

Raja Chandru
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