Triumphrat

jcline8

When I am riding and dcide to really twist the throttle, I get a chattering noise at around 5000 rpms. If I build to the 5000 more gradually, the chatter is not there. Only when you really open the throttle.

Any idea what is causing this noise?

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2005 Bonnie Black

markbvt

Try holding down your clutch lever. Mine rattles at a certain RPM when a certain load is placed on the engine -- vibes come through the handlebars and shake the clutch lever in its bracket. If I push it down with a couple fingers to keep it from vibrating, the chattering stops.

I suppose it could just as easily happen with a brake lever, or possibly a mirror if it's a little loose.

--mark

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Bennington Triumph Bash
Bennington, VT May 30-June 1, 2008
Thanks to all who attended!

Do you keep one bullet left for yourself, for when it's all over and done?

Normandy

Clutch is slipping ? What oil is in it ?

357Bob

What octane fuel you running?

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357bob

jcline8

I will try that on the lever, but it sounds as if it were coming from the font of the engine.

The clutch does not appear to slip. The only time I notice it is when I am in 5th gear and hit it hard. I am using the Mobil 1 racing 4t (I believe) what is recommended by the dealer. I am planning to switch to Amsoil at the next change.

I run 93 octane fuel.

Should any of these things be changed?

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2005 Bonnie Black

Normandy

When you are in 5th gear and hit it, what rpm is showing before you hit it ?

jcline8

It is probably at about 4000 to 4500 when I twist it hard.

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2005 Bonnie Black

JTKMX

Does it feel like someone has a hold of the frame right under the tank, and they are shaking it at a frequency less than the engine RPMs? I have a Bonneville Black and I can be going 65mph and give it 3/4 to full throttle and it will shake (shudder) noticeably until about 75mph. It stops instanly, like someone turned off a light switch. If I accelerate gradually (very gradually), it will remain smooth. It is still under warranty, so I don't want to try to start tearing things apart to try to solve it and the dealer is clueless.

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2006 Bonneville Black, TORs, Hepco and Becker Junior 30s, Corbin Smuggler

tc_dick

I feel a similar sensation.. sorta feels like the motor might be bogging a little bit, but it shouldn't as it's right in the power band.

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'07 Silver Bonnie
Seattle, WA

Geoff

Sounds like a jetting or carb balance issue, perhaps
G

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I never wanted to lead, and I never wanted to follow.
I just wanted to ride