[twov8sandat4]

Hi everyone,

Our local track is rumored to go NHRA for 2011, and I am getting conflicting answers on the type of battery disconnect switches that will be accepted for 2011. I currently have the rotary style ON/OFF switch, which is supposedly going to be unaccepted. Is this true? Online searches for 2011 amendments did not show the push/pull as the only accepted style, and previous year rulebooks I could find online did not specify the type required

Any information is greatly appreciated

[DAVE RIBEIRO]

I run the same switch in my NHRA stocker, you should be fine unless they changed in the last week ??? Rule book shows its OK.

Dave...1033 Stk (RV-455)

[66bonne]

That rumor about the cut-off switch has been floating around Florida for a couple of years but I haven't seen any change in the rule book yet.

Jim

[1qikta]

Discreet

[beargfr]

My 2009 rule book says (Section 8:4, MASTER CUTOFF, page 275):

"Mandatory when battery is relocated, or as outlined in Class Requirements. An electrical power cutoff switch (one only) must be installed on the rearmost part of each vehicle and be easily accessible from outside the car body. This cutoff switch must be connected to the positive side of the electrical system and must stop all electrical functions including magneto ignition. The off position must be clearly indicated with the word "OFF". If switch is "push/pull" type, "push" must be the action for shutting off the electrical system, "pull" to turn it on. Any rods or cables used to activate the switch must be minimum 1/8-inch diameter. Plastic or keyed switches prohibited. Switches and/or controls must be located behind rear wheels on rear-engine dragsters.

So, it doesn't say the switch must be push/pull. It says IF you're using push/pull, it has to be set up so that "push" turns it off. I don't see anyting that precludes using a different type of switch as long as it's not keyed and not plastic.

How-some-ever, talking with "a guy" the other day who has quite a bit of experience running events, he pointed out that the final safety authority at any track is the guy who's in charge of tech. He can say "no" to things that might otherwise be permitted by the rulebook and you're not likely to get anywhere by trying to debate him. So, seems to me the safest route would be to check the rules AND talk to the tech folks at the track.

Bear

[Probird]

Originally Posted by beargfr

My 2009 rule book says (Section 8:4, MASTER CUTOFF, page 275):

"Mandatory when battery is relocated, or as outlined in Class Requirements. An electrical power cutoff switch (one only) must be installed on the rearmost part of each vehicle and be easily accessible from outside the car body. This cutoff switch must be connected to the positive side of the electrical system and must stop all electrical functions including magneto ignition. The off position must be clearly indicated with the word "OFF". If switch is "push/pull" type, "push" must be the action for shutting off the electrical system, "pull" to turn it on. Any rods or cables used to activate the switch must be minimum 1/8-inch diameter. Plastic or keyed switches prohibited. Switches and/or controls must be located behind rear wheels on rear-engine dragsters.

So, it doesn't say the switch must be push/pull. It says IF you're using push/pull, it has to be set up so that "push" turns it off. I don't see anyting that precludes using a different type of switch as long as it's not keyed and not plastic.

How-some-ever, talking with "a guy" the other day who has quite a bit of experience running events, he pointed out that the final safety authority at any track is the guy who's in charge of tech. He can say "no" to things that might otherwise be permitted by the rulebook and you're not likely to get anywhere by trying to debate him. So, seems to me the safest route would be to check the rules AND talk to the tech folks at the track.

Bear

It says the exact same thing in the 2011 rule book. Rotary switch is fine.

[twov8sandat4]

Thank you gents I'll contact the track staff also just to make sure.