STRONG VIBRATIONS

[Tonythetiger]

I've decided to look at things I've done to the bike since the vibrations began, I've bought a wheel balancer to re-do the balancing and check the wheel isn't bent out of shape, check those new tyres front and back and also change the fork oil as I went with 10w not 5w as the book says. After that it's a case of check every nut and bolt until I find out what the cause is.

[seth]

I've decided to look at things I've done to the bike since the vibrations began, I've bought a wheel balancer to re-do the balancing and check the wheel isn't bent out of shape, check those new tyres front and back and also change the fork oil as I went with 10w not 5w as the book says. After that it's a case of check every nut and bolt until I find out what the cause is.

There is a thread here that barmy (I think though it could have been someone else) all about fork oil and how one manufacturers 5w is totally different to others and that the same across all manufacturers (think there's even a chart)
So before saying you put the wrong stuff in you know if the original oil's grade was closer far away from what's in it now.

Separately I remember folk have vibration issues years ago and the way they fixed them was to support motor lossen all the engine mount bolts lift/jack up the engine very slightly and then retightened all the engine mount bolts so the bolts are in the centre of the mount plates/holes rather than all the engine weight being at the bottom of them and making it easier to transfer the vibrations from the engine to the bike .

[DTTW]

Just how old was the PR4 your mate fitted DD? I haven't seen them for a while - the Road 5 has been out since 2018 so maybe an old tyre?

Dated W20/23. So new tire. I have always used PR's, 3's, 4's and now currently running on fifth generation. Never had an issue.

[Mick_J]

Have you checked the balancer shaft to make sure it's tight?

[DTTW]

Is the balancer shaft engine related part because that's the only balancer shaft I can think of?

[Mick_J]

Yes, it's the crank balancer.