NHRA mandates shut off controllers for F/C

[Too many to list here]

NHRA News: NHRA mandates safety shutoff controller for nitro Funny Cars (10/8/2008)

 

[Percboy]

Why only the floppers? TF next?

 

[The Counterfeiter]

Interesting . . . NHRA release says controller is activated by sensing "manifold burst panel failure". Electrimotion's site has a diagram that states "Activates when tether is pulled or circuit is opened." I'm not sure how you attach a tether to the manifold burst panel(s) - obviously, you CAN attach a tether to the burst panel of a FC body. TF? - can't figure this out!
It's possible that Electrimotion's diagram is not up to date. I'm a nut (don't start!) about understanding how things work . . . I'll be very interested in seeing how the system is actually activated. - Jim

 

[topdigger]

Interesting . . . NHRA release says controller is activated by sensing "manifold burst panel failure". Electrimotion's site has a diagram that states "Activates when tether is pulled or circuit is opened." I'm not sure how you attach a tether to the manifold burst panel(s) - obviously, you CAN attach a tether to the burst panel of a FC body. TF? - can't figure this out!
It's possible that Electrimotion's diagram is not up to date. I'm a nut (don't start!) about understanding how things work . . . I'll be very interested in seeing how the system is actually activated. - Jim

"or circuit is opened."


I'm gonna guess that it conducts across the panel somehow and when the panel bursts it become on open circuit where the panel was.

 

[d'kid]

Not sure but I works... Robert has had at least one bust panel failure and chutes came out and car shut off as advertised... there's also a Big Button in the middle of the butterflys...

d'kid

 

[CrewGuy]

or circuit is opened

I'm gonna guess that it conducts across the panel somehow and when the panel bursts it become on open circuit where the panel was.

That is a good question. I would like to see how the design is engineered.

 

[Draw 3D]

The pictures at electrimotion.com looks pretty clear on installation.

 

[The Counterfeiter]

That is a good question. I would like to see how the design is engineered.

Yes, it is a good question. Remember, there are two burst panels on the manifold. If one or both "blow", it's not going to open a circuit since the panels under the clamps are still one conductive piece. Certainly more questions than answers!
Emailed a question to the boyz at [email protected] for some details on this weekend's shows. More emails might get us some answers!

 

[topdigger]

If you look at the diagram on the 6" manifold tether on the lower right it has a wire that is looped on one side and connected to a tether anchor. I am gonna assume that when the panel bursts it opens up and the tether breaks the looped wire causing an open circuit.

 

[CrewGuy]

Looking at the photos:
The opening of the circuit will rely on the failure of the manifold- not just the panel popping- unless escaping pressure pulls the circuit open.

I would think somebody in this world has designed a pressure sensor that could be installed in the plenum of the manifold. That might be a cheap way to police blower overdrive- pops the chutes if pressure exceeds limits.

 

[Rajunz]

If you look at the diagram on the 6" manifold tether on the lower right it has a wire that is looped on one side and connected to a tether anchor. I am gonna assume that when the panel bursts it opens up and the tether breaks the looped wire causing an open circuit.

You are correct Eathon, as soon as a burst plate pops, it will disconnect those connectors causing a shutdown mode.

 

[Usual password less 1]

Alll the ones I have seen including the 2 on our car have a quick disconnect plug suspended above the middle of the burst panel. When the burst panel/s on the intake manifold blows ,the plug unplugs (gets disconnected) and everything is activated.

Jeff

 

[yoda]

Alll the ones I have seen including the 2 on our car have a quick disconnect plug suspended above the middle of the burst panel. When the burst panel/s on the intake manifold blows ,the plug unplugs (gets disconnected) and everything is activated.

Jeff

man, I love when the pros are here....

Thanks for the info jeff

 

[The Counterfeiter]

Yes, it is a good question. Remember, there are two burst panels on the manifold. If one or both "blow", it's not going to open a circuit since the panels under the clamps are still one conductive piece. Certainly more questions than answers!
Emailed a question to the boyz at [email protected] for some details on this weekend's shows. More emails might get us some answers!

Thanks to ESPN for some answers on tonight's show (and to Jeff for his input)!
Guess NHRA is satisfied that the tether/sensor is durable enough that other factors won't cause it to malfunction. Hope the system works as advertised.

 

[Just Paul]

Anybody else catch Del is not running the set-back blower?

 

[funnycarguy]

Hey guys,
Dave's stuff is the best. It works. He is Mr. Promag and a lot more. This is the best thing to happen to drag racing. Check out the pricing on the website. Cheap too in my opinion. These should be on alcohol cars too as soon as there is enough supply. Heck the box is on all the fast cars running the fuel and ignition management anyways.
Lets be positive. Ask those who have worked with Dave's stuff. This sport can't take any more hits.
thanks
Dale