Harsh Vibs, While Driving

[zoro]

This last few months, i,ve had harsh vibration, while driving, the engine has 60.000 miles up.
first of all
The swingarm has had new bearings, with the shock & linkage cleaned & new bearings, where needed.
New wheel bearings & cush drive bearing. Cush drive rubbers fine, as back wheel, arm & shock, out of a low milage D9.
Bevel box, changed. cleaned & greased.
Drive line checked, in good condition. Splines good ect
U Joint. i checked it the best i could, by rotating it, to see if there was any free play. Seems to be tight, through out its full rotation, up -down & side to side.
Casing was removed, from drive side of engine, all gears seem mark & chip free, will free move ment.
All engine mounts tight
All exhaust mounts = bolts tight
Right hand frame cradle tight
New clutch & springs
New neddle roller bearing that spins within the clutch.
The shaft, seems tight, & runs smooth, that the clutch bolts to
Cam chain, adjusted, seems to be half way down the ratchet, for adjustment.
I have noticed while the bike is sitting ticking over at normal running temp, a odd little thump, or maybe a little glitch, while at idil speed.
Not sure at what to check next.
Any one any thoughts, or might have seen the problem before.
The rev counter has went AWOL. Priced a new throttle censor, from Fowerls. £190, i think i might do without.

Any Ideas ??///
The bike is used 7 days a week, with full luggage, top box plus side boxs, plus luggage straped across the seat at times when needed.
. well looked after, never reved above 5 thou, only when needed. Oil changed between 1000, to 1600, depending on how rough, the engine = gearbox, & the amount of work the bikke has seen within those miles

If i can get the bike lifted, some way to check under the frame cradle, incase a engine mount might be cracked within the frame

After reading the reports on these bikes, always made me wonder what mileage, the engine would run to. hope fully i,m not going to find this out soon???////

[neilmud Lord Protector]

Maybe grannies & eggs what about carbs? balence cracked tired rubbers etc.

Or tyres? fronts tend to step especially on BRIDGESTONES

CD swears by steering bearings as a cure all.

Neil

[CD]

Oh yes every time but only for weaving handling. ;D

Has the front wheel bearing been done?

Could the engine mounts be rubbing. I believe they are rubber mounts.

Mine gets run at around 6000 revs most of the while and revved harder from time to time. Not revving it might have gunked up the pipes somewhere. Maybe give it a really good thrash.

Mine also does that funny hunt on tickover. The carbs are balanced and its always been like that.

[Padster]

If the carbs are balanced then a slight air leak somewhere in the system can cause the hunting effect. Has the TPS been adjusted recently? If this is at all out of true you will get a few vibration and rough running problems.

[Padster]

Having re read your post the TPS and rev counter seem favourite.If the TPS is playing up the rev counter won't work. There is a guide on the site to resetting.

[zoro]

Aug 5, 2009 9:34:54 GMT Padster said:

If the carbs are balanced then a slight air leak somewhere in the system can cause the hunting effect. Has the TPS been adjusted recently? If this is at all out of true you will get a few vibration and rough running problems.

The TPS, has only went awol, this last week, but in hindsight, the carbs will come off soon, to be cleaned, & set. In the Hynes book, it was wrote that if the rev counter, goes to 10 thou, then back, every few seconds, then it was at fault.
I was never certain that these could be fixed??
I,ll go back through the pages, to find the info on the TPS.

Thanks.

[Padster]

The method for checking, setting is shown here
diversionclub.proboards.com/index.cgi?board=techarticles&action=display&thread=3821