more SU data points

["Daren Stone, D2 Mfg. Engr. C5/6, 5-9521" <DSTONE@SC9.intel.com>]

>>Nope- this is the SU design of the 30's. My '34 MG has aluminium SU's >with
>*brass* pistons, and a cap marked something like "Few drops oil >weekly". The
>oil damper and return spring were introduced in the late >30's or 40's.

Another datapoint:  My '51 Mk VI Bentley has side-draft SU's with brass pistons 
and NO SPRINGS!
It does have dampers though.

  --berry

     >>>And yet another data point; My '48 Riley has *one* side
     draught SU with damper, return spring, but I do not
     believe the piston is brass. Pot metal maybe ...

          cheers-
                 daren