Classic/Antique Car Repair: 1971 Rolls Royce Silver Shadow, rolls royce silver shadow, royce silver shadow

Question
I have a problem with my Silver Shadow, there is a irregular knocking sound from drivers side back wheel. Engineers had it up on ramp and cannot find the problem. Checked struts,suspension,bushing and velocity joints but no luck. Any ideas would be greatly appreciated. Thanks

Answer
Hi Anthony:
Well, this sounds a bit strange. I would want to know a little about the sound first...

1. If it is a clicking sound that occurs as the wheel turns(especially when moving slow), it could be as simple as the hub cap emblem is loose.

2. If it is a knocking sound that occurs randomly(especially while idling), it could be the exhaust banging against the frame.

3. If neither of the above, please explain the sound in more detail.

Thanks.