PSN-L Email List Message
Subject: Re: Seismometer phosphor bronze metal strip springs?
From: "meredith lamb" paleoartifact@.........
Date: Tue, 25 Mar 2008 00:05:57 -0500
The 14 tho flat spring coil length is ~116 foot. Unfortunately; I
checked further on
the web and its no longer being made in that thickness by Lyon Industries, but,
<12, 16> tho etc., are.
The 7 tho flat spring 2 coils total length is ~320 foot. Still in
on width; its 1/2".
All old/new stock surplus. CDA-510 grade A; apparently very widely
used, high strength and resilence. Possibly very slightly magnetic
but haven't checked.
Could be interesting....
Take care, Meredith
On 3/24/08, ChrisAtUpw@....... wrote:
> In a message dated 23/03/2008, paleoartifact@......... writes:
> I ran across some phosphor bronze metal alloy strip coils recently and
> naturally the thought of
> using such in a seismometer comes to mind. One size is .007" thick X .375"
> and the other is .014" thick X 1" width. The springs are tempered.
> Hi Meredith,
> The 7 thou stuff is likely too rigid for a good Wood-Anderson. You can
> buy bronze wire relatively easily.
> And it is rather thick for light flexures. Maybe OK on a Sprengnether.
> The internet yields very little or no recommendations or any real strong
> (metal creep..PSN email @ ~1999).
> Besides the possible usual flexure use: I do envision (muse) on the thought
> trying such as a taut vertical strip spring and with a attached/extended
> light weight mass
> which operates in a horizontal sensing configuration. Yes; its a old idea
> similar to the old
> Wood-Andersons of yesteryear; but different only in it being a strip and
> a round
> wire as a torsion pivot.
> Thoughts? Recommendations?
> The 14 tho stuff should make OK springs for a vertical?
> How long are the coils?
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