Thoughts on fuel inertia switch?

[Joe]

When I built my cobra I put one. im Most likely putting one on my 40 but just curious to if any one else is running one on there’s?
thanks

 

[Neil]

The SCTA requires an inertia switch on cars or bikes that run an electric fuel pump. I use an impact switch from a Ford in my car. I think it opens at about 20Gs. If you are involved in a crash- even on the street- and are knocked unconscious, you don't want the electric fuel pump to keep running. You are in enough trouble already-- you don't want to be awash in gasoline as well.

 

[Randy V]

I ran one from a Ford Mustang in my Cobra racecar. There’s a lot of speculation as to proper placement in a race car. Some guys put theres in the tail end of the car like Ford did. I put mine at the bottom of my instrument panel. Some of the guys found that the switch could be a little trigger happy when lightly tapped by a car from behind.

 

[Joe]

I’m running the Ford in my cobra aswell,I have in the back in trunk. I bought another for my 40 build was just curious as to how many people have it in there’s.going through many build threads here it looks like not many.

 

[Neil]

My car has no trunk, it's a mid-engine layout. I mounted my impact switch on the right side of my cockpit; this way, if it trips accidentally I can push the reset button from the driver's seat.

 

[DaveC]

Neil is on it. In my Cobra, I installed the Ford switch in the trunk. It tripped on the track, requiring a tow-of-shame back to the pits. In my GTM, it's in the center console within reach.

 

[David mono]

The amount of impact to trip the switch does very , I'm pretty sure I saw one mounted on the left just below the drivers knee on a Ford mini van 2005 or so. I'd have a look around the junkyard for different mounting points , for personal safety I would mount the switch in arms reach.

 

[Joe]

As mentioned a few above. I agree to keep within arm reach. Never really thought about that. Didn't think there that sensitive as i havnt touched mine in cobra since installed.
Thanks

 

[Malcolm]

I have a 10g switch mounted on the chassis by the door hinge behind the dash. From a Jaguar I beleive but can't remember which one. Only ever triggered once when spun off a track during a competition and went across some very rough ground at speed! Not a lot of effort to fit and a good safety feature to have I think.