Hi Chris,  =20

>Does the increased daytime noise on the vertical correlate in time with =
the noise levels on the Lehman?

They are in two different location 7 miles apart.  BUT =20
1.  Night time both very quiet.
2.  Weekends both very quiet.
3.  Work day M-F 8-5 ..........Lehman not near road construction QUIET =
with very little noise
4.    ..       ..   .. ..  ..             Vertical "Slinky"  1.5 miles =
to road construction very noisy.   And as the work get closer to our =
house the noise gets worse.

I will insulate the tower, to see what happens.

Thanks, Ted



  ----- Original Message -----=20
  From: ChrisAtUpw@..........
  To: psn-l@.................
  Sent: Thursday, July 26, 2007 10:50 PM
  Subject: Re: "P" ky "Slinky"


  In a message dated 2007/07/26, tchannel1@............ writes:



    So why not chop a few turns off the spring? ! Maybe make two, with =
half length springs?...........I could have, but gathering the loops =
aloud me to add and subtract to adj the length.


  Hi Ted,

         Trim the extension by adding mass, eg large diameter washers?


    >Have you tried putting thermal insulation around the tube?  =
...........I could, but the room is temperature stable, so I have not.


         I suggest that you try it sometime? Maybe just wrap / hang a =
rug or a blanket around it for a rough test?
         It is likely to significantly reduce the noise.=20
         Does the increased daytime noise on the vertical correlate in =
time with the noise levels on the Lehman?

         Regards,








Hi Chris,   
 
>Does the increased daytime noise on =
the=20
vertical correlate in time with the noise levels on the =
Lehman?
 
They are in two different =
location 7 miles=20
apart.  BUT  
1.  Night time both very =
quiet.
2.  Weekends both very =
quiet.
3.  Work day M-F 8-5 =
...........Lehman=20
not near road construction QUIET with very little =
noise
4.   =20
...       ..   .. .. =20
...            =
;=20
Vertical "Slinky"  1.5 miles to road construction very =
noisy.  =20
And as the work get closer to our house the noise gets =
worse.
 
I will insulate the tower, to see what=20
happens.
 
Thanks, Ted





  
----- Original Message ----- 
  From:=20
  ChrisAtUpw@....... 
  
To: psn-l@.............. 
  
Sent: Thursday, July 26, 2007 =
10:50=20
  PM
  
Subject: Re: "P" ky =
"Slinky"
  

In a=20
  message dated 2007/07/26, tchannel1@............=20
  writes:



  So why not chop a few turns off the spring? ! Maybe make =
two,=20
    with half length springs?...........I could have, but gathering the =
loops=20
    aloud me to add and subtract to adj the length.

Hi=20
  Ted,

       Trim the extension by =
adding=20
  mass, eg large diameter washers?


  >Have you tried putting thermal insulation around the =

    tube?  ..........I could, but the room is temperature stable, =
so I have=20
    not.

       I =
suggest that=20
  you try it sometime? Maybe just wrap / hang a rug or a blanket around =
it for a=20
  rough test?
       It is likely to=20
  significantly reduce the noise. =

       Does=20
  the increased daytime noise on the vertical correlate in time with the =
noise=20
  levels on the Lehman?

      =20
  Regards,

       Chris =
Chapman=20