Engine vibey

[crickleymal]

I had the valve clearances done recently and the carb rubbers changed. They said they'd balanced the carbs. Since then there is a horrible vibration between 5000 & 6000 rpm. It comes right up through the seat and is very uncomfortable. Of course that happens to be between 60 & 70 mph. Before the work it was beautifully smooth. So is this normal?

[darrsi]

Well balanced carbs make the bike feel really smooth, so I'd say no, something ain't right.

[crickleymal]

I'll have to have a look at the balancing at the weekend.

[crickleymal]

Checked the carbs and they're fine, all carbs within 6 mBar of each other. One needed a slight tweak but nothing significant. Still horribly vibey between 5 and 6k prm. A bit like having your balls in a blender. And when you get up to 10k the second harmonic vibes are just as bad if not worse.