[Land-speed] Inertia Switch Specs...

[Dave Dahlgren]

No one has asked the big question what resets them ie. are they a one time 
use if so you can not test them.. sort of like testing a fuse.. They should 
at least latch up if activated.. Testing is sort of a joke in real time a 10 
or 12 g test means a crash test for all the cars.. at least the lines will 
be short for the bikes..lol
Dave
----- Original Message ----- 
From: "drmayf" <drmayf at mayfco.com>
To: "James Tone" <gmc6power at earthlink.net>
Cc: "LSR" <land-speed at autox.team.net>; "Rick Byrnes" 
<Rick at RBMotorsports.com>
Sent: Thursday, December 04, 2008 7:30 PM
Subject: Re: [Land-speed] Inertia Switch Specs...


> James, all... I too wonder how to demonstrate that the device is 
> functional. But another thought also comes to mind. Are these things 
> directional?  Would they activate in a roll over?  Or does it take the 10 
> g crash loading of impact to actually trigger them?  If they are 
> directional, then would the demonstration need to be conducted in three 
> orthoginal axis and then off axis conditions?  As an old test guy I'd say 
> yes.  Each one would need to be activated in all directions or at least a 
> good sampling of them.   Anyone know how the SCCA regulates and specs this 
> kind of system? Heck, since it is a safety feature, maybe it needs an SFI 
> tag as well....Then a manufacturer would be on the hook to demonstrate 
> that it works.
>
> mayf