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#14567 - 02/28/05 10:03 PM Impact sensitive Fuel cutoff switch?
jcc Offline
No politics

Registered: 12/21/03
Posts: 17384
Loc: Trumussia
Any body know who makes them or who sells them? I remember seeing them a number of years ago to shut off electric fuel pumps in a hard crash. Seemed like a good/safe idea. Any comments? couldn't be much of a problem in a street car, but a race car (non drag) might be more problems then it solves?
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#14568 - 02/28/05 10:17 PM Re: Impact sensitive Fuel cutoff switch? [Re: jcc]
blown340 Offline
master

Registered: 08/25/04
Posts: 3289
Loc: Walnut Creek, CA
Ron Francis has them, and yes they are a excellent thing to have.

http://www.parts123.com/parts123/yb.dll?parta~dyndetail~0000278a~AAAOB~77.50~~~~1GN00O92K~

-Jon
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70 challenger convertible. 340/5 speed. blown, intercooled, efi, blah blah blah 71 valiant scamp 318/A833OD/AC/PS 00 dakota RC 4.7L 5 spd autoX'r. SRT10/T56 swap in process 73 W200 Power wagon, PTO winch, 4 spd

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#14569 - 02/28/05 10:21 PM Re: Impact sensitive Fuel cutoff switch? [Re: jcc]
1_WILD_RT Offline
Management Trainee

Registered: 01/15/04
Posts: 27347
Loc: Today? Who Knows?
On Efi vehicles its called an inertia switch, typically a magnetic switch with a spring trying to seperate the contacts if its shocked hard enough it opens..generally good, but sometimes slamming a door or trunklid will open it as far as on a race vehicle if the car hooks good the violence of the launch can cause the switch to open
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#14570 - 02/28/05 10:22 PM Re: Impact sensitive Fuel cutoff switch? [Re: jcc]
topside Online   content
I Live Here

Registered: 01/19/03
Posts: 12836
Loc: So Near, Yet So Far
They've been on Fords since they went to EFI, and are generally mounted in the trunk, away from the tank & electric pump; might be adaptable to an aftermarket pump.
To be honest, it's not something I've worried about; there's a switch on my dash and a master cutoff on the rear of the car per NHRA rules. But if no-one's around & your bell is really rung, an impact-switch could be a nice thing to have. I guess the thing to find out is at what impact the Ford unit activates; I can tell you that I once hit a chunk of tire on the freeway that whacked the LR wheelwell of a Ford I was driving and shut the pump off. So I think it was fairly sensitive.

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#14571 - 03/01/05 05:30 AM Re: Impact sensitive Fuel cutoff switch? [Re: 1_WILD_RT]
dkn1997 Offline
master

Registered: 01/23/04
Posts: 2978
Loc: Coram, NY
the belt parkway in brooklyn can cause them to open, especially when going over a draw bridge. Don't ask me how I know.
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