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>  
> I just installed a new set of shock donuts from Lancair, replacing the
> original, cracked, 1986 units on my 235.
>
> I agree with Bill Rumburg's statement "they are so stiff and
> over-compressed that they offer virtually no shock absorption".  If
> anything the new ones feel stiffer than the old ones.  
>
> Oh well,  they look better!
>

Bob -

  I neglected to mention that the slight amount of shock absorption
in the present setup comes from tire compression, not from the extremely
stiff rubber "doughnuts". Besides a substantial improvement in ride, the
major advantage of a true coil spring shock absorber assembly would be
improved landing load shock absorption (for those whose landings are less
than perfect)
           Bill Rumburg
           N403WR  (Sonic BooM)