One feature the inertia switch shares with the manual cutoff
(for theft prevention) is that it can be easily activated manually.
How many thieves are going to know, or even suspect you have
one?
BTW, my son's TR8 came from the factory with a fuel pump
inertia cutoff switch.
Roland
On Mon, 08 Dec 2003 10:26:37 -0800 Steve Laifman <SLaifman@SoCal.rr.com>
writes:
> Race organizations want the manual switch as mandatory. It is
> simple,
> near fool proof, and when hidden (NOT SCCA APPROVED) can be a theft
>
> stopper. Your car is only a block away when it stops.
>
> An oil pressure switch can simply be an oil pressure indicator light
>
> switch, but does not provide safety in case of a fire while running,
>
> along with the starting issue you mention.
>
> The inertia switch cuts you off on ACCELERATION?? I think it's
> facing
> the wrong direction. On rapid deceleration, depending on setting,
> you
> could find no power after a hard brake for a turn. No fun coming
> out of
> that corner.
>
> Of course, all the types you mention are electric fuel pump devices.
> I
> believe the race organizations want a fuel line valve, although a
> hide
> able electric switch (or in fuel line valve) under the carpet, with
>
> removable key, is best for theft prevention. Having it in the
> middle of
> your cowl may be best for racing safety, but unsightly.
>
> Steve
>
> W Goebner wrote:
>
> >I would like some ideas on adding an automatic fuel pump cutoff
> switch.
> >In case of an accident, it would be valuable to stop the flow of
> fuel.
> >
> >
> >
> >I know of two types of cutoff switches available:
> >
> >
> >
> >1. Inertia, which activates when subjected to a rapid change in
> >acceleration or deceleration.
> >
> >
> >
> >2. Oil pressure, which would cutoff the fuel when oil pressure is
> lost.
> >
> >
> >
> >The inertia switch would probably be the best because very little
> extra
> >wiring would be needed and the engine wouldn't have to be cranked
> to
> >bring up oil pressure to activate the pump.
> >
> >
> --
> -----
>
> Steve Laifman
|