Vibration in 5th Gear

[lx_online]

Hi,

I'm not sure if this is normal - or indicates an issue. Comments please?

Edit: (Any gear upwards of 3rd seems to do this) At 7500RPM the bike vibrates so much that it is uncomfortable (would quickly cause my bum to go numb!). If I go slower or faster it fades away.

The vibration comes from the pegs/seat more than the bars.

If you need any more info, let me know.

Cheers for your time,
Alex.

[Rocket]

Carbs/throttle bodies been balanced recently?

Chain & sprockets in good condition?

Rear wheel bearings OK?


Engine speed rather than road speed is pointing to a bit of balancing required.

[lx_online]

Thanks Rocket. My Haines manual arrives soon, I will check it for balancing notes. Forgot to mention it's a pointy - so no carbs to check.

[tom-k6]

sounds mental but are the alun bolts on your pegs done up tightly? that could explain the huge vibrations from these specific areas,

[lx_online]

sounds mental but are the alun bolts on your pegs done up tightly? that could explain the huge vibrations from these specific areas,

I'll check...

[Bibio]

Forgot to mention it's a pointy - so no carbs to check.

yes but you still need to balance the throttle bodies.

if its a twin spark K7> you will need an sds tool as well as the gauges.

[lx_online]

Thanks Bibio. It's a K5 - does this mean I won't need an SDS tool (sorry, I don't know what one of those is).

[Bibio]

no you wont need the SDS tool. just a set of vacuum gauges.