Wobbly bars - cause?

Beelzebob · Spanner Monkey Joined: 08 Sep 2010 Karma :

Hi there

Got a wee problem with my 600 Diversion where the bars get a bit wobbly at anything upwards of about 20, when taking one hand off the bars. It's not so serious that it's unrideable but obviously something's not quite right.

Would appreciate some advice:

1) Is the symptom called 'head shake'?

2) Could the cause be head stock bearings? Had to adjust these at MoT time and, though they adjusted fine to get through the test, they were not in the greatest condition.

Cheers

Bob
____________________
'09 YBR 125 -> '92 XJ600 S Diversion -> '99 Hornet 600

"Stronger than your average female lifeguard"

Vincent · Banned Joined: 16 Oct 2006 Karma :

Check tyre pressures first, and tyre condition. An under inflated or knackered tyre on a the rear can cause these symptoms. Next, check the state of the wheel bearings. Make sure all yoke pinch bolts are tight, check condition of rear shock and make sure forks are filled with the right oil to the correct level. Check swingarm bushes, headrace bearings and wheel allingnment.

That should give you enough to start on Wink

Howling TerrorOutOfOffice · Super Spammer Joined: 05 Dec 2008 Karma :

Another thing to check...No missing wheel weights.
____________________
Diabolical homemade music Bandcamp and Soundcloud
Singer songwriter, Artist and allround good bloke Listen to Andrew Susan Johnston here
The Harry Turner Project

Vincent · Banned Joined: 16 Oct 2006 Karma :

Truzo · Nova Slayer Joined: 03 Sep 2010 Karma :

I have had this before. my problem was wheel balancing, but i guess it could be tyre pressure or maybe head stock bearings
____________________
Current Bikes: RXS 100, RD 125lc3, RD 350 F2

Easter Bunny · World Chat Champion Joined: 20 Aug 2010 Karma :

I know my head bearing need replacing (going in Tuesday) and I also had a very apparent shake with one hand, put it down to bearings, had the tyre changed last week, shake is almost gone, must have been balancing!

Honda ST1100
____________________
The light at the end of the tunnel is an oncoming train!

Beelzebob · Spanner Monkey Joined: 08 Sep 2010 Karma :

Thanks all Karma

Just a couple of things to check then...
____________________
'09 YBR 125 -> '92 XJ600 S Diversion -> '99 Hornet 600

"Stronger than your average female lifeguard"

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

As Vincent said check the shape and condition of the rear tyre. Steering head bearings too tight can also low speed weaving.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good Very Happy