Help... garage/mechanic required

[ole carter]

Hoping this is the right place for this....

I,m currently running a a bike engined track car for fun...( zzr 1100 to be precise,propshaft to rear wheel drive),but have lately come across a few gremlins...

Is there anybody ( mechanics/garage wise ..) local to the midlands who could help me

Many thanx

Andy

[Frik]

Any more details on the specifics of the gremlins?

[ole carter]

The problem is a really bad knocking when in gear and moving... thought at first the prop had come loose,but that seems to be okay.Engine revs /runs ok in neutral,when you put it in gear and lift the clutch it starts to knock as soon as you move..the knock speeded up the quicker we were going.. thought it might be the clutch as this is a std item...?? It all started when we were coming down the box from bout 70 mph ish..

[Steve_T]

First thing I'd suggest is you work out if the speed of the knocking is engine speed or wheel speed related. If it is the gearbox, then if the noise is engine speed related, it's the input side of the box, where if it's wheel speed related, it the output side, or something else in the drive train.

Steve.

[Frik]

Good advice from Steve.

You'll get a few more replies here I reckon.

[m3psm]

Also check the union between the final drive shaft and the gearbox output shaft for play.

On ZZR's the sprocket nut is prone to coming free (lost mine at 120mph) so this could give the symptoms you describe if the new pinion is secured on the original shaft thread... I think

[ole carter]

guys thanx for the support and ideas..... really need to get my arse off the sofa and sort it.

cheers Andy