Hi Chris,

Excellent!

The two separate masses weigh a total of 20 pounds.  The absolute maximum
width of the spring allowed within the
clamp is 0.311"; it could obviously contain a smaller width ~ 0.25", for
much easier insertion/replacement.

As a possible material prelude; I do have 0.007", and 0.014" thick phosphor
bronze shim roll stock.  I also have
0.010" thick blue tempered hardened steel spring shim roll stock.  All old
but never used.  All would need cutting
down and cut edge filing deburring to fit the flat clamp size firmly/easily;
all the spring widths are more than 0.311".

Take care, Meredith





On Wed, Aug 20, 2008 at 8:17 AM,  wrote:

> In a message dated 2008/08/20, dwebb002@............. writes:
>
> I have a few pieces of the original and will measure the width and
> thickness as soon as I find a micrometer.  I can attest that they are
> rather fragile.  I don't know the composition but they have a brassy
> appearance.
> Dick
>
>
>
> Hi Dick, James , Meredith,
>
>        If you can give me the seismic mass and the maximum width of the
> clamp strip, we can work out the thickness required quite easily. The wire
> was almost certainly a repair.
>        It is very unlikely to be brass, but it could well be bronze or
> phosphor bronze strip. You might also consider a SS replacement?
>
>        Regards,
>
>        Chris Chapman
Hi Chris,

Excellent!

The two separate masses weigh a total of 20 pounds.  The absolute maximum width of the spring allowed within the
clamp is 0.311"; it could obviously contain a smaller width ~ 0.25", for much easier insertion/replacement.


As a possible material prelude; I do have 0.007", and 0.014" thick phosphor bronze shim roll stock.  I also have
0.010" thick blue tempered hardened steel spring shim roll stock.  All old but never used.  All would need cutting

down and cut edge filing deburring to fit the flat clamp size firmly/easily; all the spring widths are more than 0.311".  

Take care, Meredith



 

On Wed, Aug 20, 2008 at 8:17 AM,  <ChrisAtUpw@.......> wrote:

In a message dated 2008/08/20, dwebb002@............. writes:




I have a few pieces of the original and will measure the width and 

thickness as soon as I find a micrometer.  I can attest that they are 

rather fragile.  I don't know the composition but they have a brassy 

appearance.

Dick




Hi Dick, James , Meredith,



       If you can give me the seismic mass and the maximum width of the clamp strip, we can work out the thickness required quite easily. The wire was almost certainly a repair.

       It is very unlikely to be brass, but it could well be bronze or phosphor bronze strip. You might also consider a SS replacement?



       Regards,



       Chris Chapman