Hi Chris,   My reason, was I had the band saw blade.   I think I will =
try your idea, and I do have some music wire, and can get some piano =
wire.  Your idea  would stabilize the top and the bottom, so that would =
be a better way to go.   Thanks,
Ted
  ----- Original Message -----=20
  From: ChrisAtUpw@..........
  To: psn-l@.................
  Sent: Monday, December 17, 2007 7:26 PM
  Subject: Re: 30 second period


  In a message dated 2007/12/18 , tchannel1@............ writes:


    Hi Folks,  I am pursuing, the concept of a "Inverted T torsion =
spring"  I just want to experiment with a mock up, in the shop, to study =
the idea.


  Hi there,

         Why are you trying to use steel tape when piano wire is readily =
available and quite cheap? It can give longer periods.

         If you use a vertical rod connected to the centre of the =
horizontal dumbell and clamp sections of piano wire in both it's ends, =
you can get quite a rigid system which does not wave about in the =
breeze....

         Regards,








Hi Chris,   My reason, was I =
had the band=20
saw blade.   I think I will try your idea, and I do have some =
music=20
wire, and can get some piano wire.  Your idea  would =
stabilize=20
the top and the bottom, so that would be a better way to go.   =

Thanks,
Ted

  
----- Original Message ----- 
  From:=20
  ChrisAtUpw@....... 
  
To: psn-l@.............. 
  
Sent: Monday, December 17, 2007 =
7:26=20
  PM
  
Subject: Re: 30 second =
period
  

In a=20
  message dated 2007/12/18 , tchannel1@............=20
writes:


  Hi Folks,  I am pursuing, the concept of a =
"Inverted T=20
    torsion spring"  I just want to experiment with a mock up, in =
the shop,=20
    to study the idea.

Hi=20
  there,

       Why are you trying =
to use=20
  steel tape when piano wire is readily available and quite cheap? It =
can give=20
  longer periods.

       If you use =
a=20
  vertical rod connected to the centre of the horizontal dumbell and =
clamp=20
  sections of piano wire in both it's ends, you can get quite a rigid =
system=20
  which does not wave about in the=20
  breeze....

      =20
  Regards,

       Chris =
Chapman=20