Grumble from LSD

[ratty]

Or maybe not... I've noticed two things occuring on my Chim 500. First is that when I accelerate in a low gear (eg 4th) there appears to be a momentary shudder in transmission accompanied by a slipping noise from the rear end - doesn't appear to actually slip (like a duff clutch) but just gives the impression of some sort of take up when pressure applied. Second is that there appears to be a slight hum from the rear end at 100mph+ V slight at the moment - I wondered whether the prop shaft might be out of balance (?). Does anyone have any ideas or has had similar experience. Is it possibly the LSD ? Would like to get some ideas before going to a dealer. Many thanks Ratty ps car has not been abused, last main service 4k miles ago (24k)

[ratty]

Peter, thanks once again for the feedback. As you suggest, the symptoms under acceleration give the impression of take up of slack in the rear end somewhere. Having had the car for 18 months I can say it wasn't the same when I bought it although it's not appearing to get any worse. Are there any simple tests I can do to check where the slack may be? As for the hum you're right it could be in my mind or even from the radio (the exhausts have been modified by the dealer so are even louder than normal) by I'm sure there's something not quite right. It doesn't sound like diff whine, more the sound of something not quite in balance (if such a state has a sound!). Has anyone experienced similar? Rgds Ratty