headset vibration

[bazza3004]

Hi i am getting a fair amount of headset 'judder' just above tick over and also i get vibration through the headset at certain rpm(quite low) whilst riding. I have changed :- engine mounts. Front and rear springs crank from a 58/107 AF welded to a chiselspeed built 60/110 . Made sure the inlet manifold and carb arnt touching anything . I had a GT 186 kit on first and now a Imola kit and hqd the vibrations with both. The only thing i havent replaced is fork bearings but the steering is nice and loose with no play in the bearings that i can feel. The engine was stripped and rebuilt with all new bearings and seals etc. I dont no what else to change / do to cure this so have basically lived with it as its not unrideable by any means but wondered if anyone had any advice or ideas on this.
Thanks. Baz

[Wack]

Have you checked the 3 bolts that hold the clamp to the headset and also for any play in the throttle tube and gearchange ?

[bazza3004]

Il check bolts but fairly sure its not the cause . Thanks.

[hullygully]

check your forks too

[Markpm]

If your carb settings are miles out it can cause this
I had problems with my carb recently and the vibration when pulling away etc was horrendous
Sorted carb and vibration gone

[bazza3004]

thanks for your replies. the carb is set quite rich at the min but as I say I had this same problem when it was obviously jetted lean (holed imola piston). it vibrates the headset if I hold it just slightly above tick over when on the stand and by this I mean you can see the headset juddering and also when riding I get some vibration through the headset in each gear when I reach a point in the rev range , not too high in the revs and this does clear with slightly more revs. ive changed mounts springs front and rear barrel kits , no play in forks although they are old bearings in there. I have resigned myself to having to live with this as its ok but just bugging me.
Lammys for you I suppose

[hullygully]

does it judder when you brake also, if it does whip the forks out pronto & change the brgs, grease it up & re-tighten properly before you have to remove that lower brg housing as its a c**t to change!!

[HxPaul]

I have a series 2,at tick over on the stand it shakes like a shiting dog,but open the throttle and the shaking goes.

[dave411]

I have a series 2,at tick over on the stand it shakes like a shiting dog,but open the throttle and the shaking goes.

[bazza3004]

Hi hullgully no its fine under braking mate just the symptons i mentioned in previous posts. Where as the headset will judder when on stand at around 1600(ish) rpm the vibration i get when riding at at certain rpm is no where near as bad just annoying. Prob more like its resinating than vibration.