On Tue, 30 Sep 2008 23:07:16 +0100
"Just zis Guy, you know?"  wrote:

> On Tue, 30 Sep 2008 20:34:27 +0100, Rob Morley 
> said in <20080930203427.01d7062b@bluemoon>:
> 
> >It shouldn't be, but they have a tendency to sag with age.  Check the
> >knuckle joints are OK, and the trumpets haven't been cut down (a
> >popular mod in its time).  If they're OK you need to either replace
> >the cones to restore the original ride height, or fit some HiLos so
> >you can adjust it.
> 
> Usual one is the suspension knuckles, or actually just the plastic
> cups, but you buy the assembly because the ball end is usually
> knackered as well.
> 
Once the cup is gone the ball grinds against the suspension arm with
considerable force - leave it for long and it can wear away the recess
that the cup fits in so a replacement cup isn't properly supported and
wears rapidly or breaks up.  Not totally off-topic - the weird
suspension was designed by one Alex Moulton.