In a message dated 2008/08/29, paleoartifact@......... writes:

> The below URL is of a simple table top test vertical setup I tried today.  
> Its uses only flat spring material for the hinge/pivot, main spring/s and 
> seems to allow some limited mass weight variations by sliding the 2 main springs 
> on the "mast" (bracket) upward. 

Hi Meredith,

       In your final version, you could replace the 'hinge' springs with 
round bars and two figure of 8 wire loops in tension. This could give a system 
very similar to the Streckheisen STS-1 vertical suspension. You could probably 
extend the period further this way, but you may be limited to about 6 seconds 
due to the large rate of change of the spring modulus with temperature. 
       Maybe also try using thinner / narrower short lengths of spring 
mounted ~horizontally in compression? Maybe even a safety razor blade flexing? Or 
pairs of blades taken from multi-blade razors? Have fun!

       Regards,

       Chris    
In a me=
ssage dated 2008/08/29, paleoartifact@......... writes:



The below URL is of a simple ta=
ble top test vertical setup I tried today.  Its uses only flat spring m=
aterial for the hinge/pivot, main spring/s and seems to allow some limited m=
ass weight variations by sliding the 2 main springs on the "mast" (bracket)=20=
upward. 




Hi Meredith,



       In your final version, you could replac=
e the 'hinge' springs with round bars and two figure of 8 wire loops in tens=
ion. This could give a system very similar to the Streckheisen STS-1 vertica=
l suspension. You could probably extend the period further this way, but you=
 may be limited to about 6 seconds due to the large rate of change of the sp=
ring modulus with temperature. 

       Maybe also try using thinner / narrower=
 short lengths of spring mounted ~horizontally in compression? Maybe even a=20=
safety razor blade flexing? Or pairs of blades taken from multi-blade razors=
? Have fun!



       Regards,



       Chris