Drag Racing Discussions > Front Engine Dragsters

Battery Cut-Off/Kill Switch

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THE FRENCHTOWN FLYER:
Yes, tech requires the engine cutoff switch be "push to disconnect" in the case of a push/pull switch. You can orient the switch or the twist-off lever to get this action. I have had to put a stud in the end of a switch that had a thumb lever to attach the rod. Some levers are hollow. In that case in addition to tapping the lever for the stud I filled the hollow in the switch lever with JB Weld for strength.

BTW, these switches do not last forever. I have had to replace one that was giving an intermittend bad connection. Maybe using isolator grommets would have prolonged it's life?

lake_harley:
Thanks for the clarification and suggestion. This afternoon I abandoned my thoughts of doing some sort of electrically switched cut off and ordered a push/pull cable. I already have a manual battery cut off on hand and after thoughts of using the hollow handle to attach a cable, I decided to fabricate/machine a different steel or aluminum handle with a bit extra length for leverage to lessen the push/pull load on the cable itself.

I appreciate all of you who have offered sound advice when I'm stumped. This FED stuff is all new to me. I am thoroughly enjoying the build process and look forward to the car moving under it's own power!

Lynn

slingshot383:
The other reason for the cutoff switch up by the battery and using a cable is weight, and simplicity.

THE FRENCHTOWN FLYER:

--- Quote from: lake_harley on January 09, 2023, 06:53:36 PM ---Thanks for the clarification and suggestion. This afternoon I abandoned my thoughts of doing some sort of electrically switched cut off and ordered a push/pull cable. I already have a manual battery cut off on hand and after thoughts of using the hollow handle to attach a cable, I decided to fabricate/machine a different steel or aluminum handle with a bit extra length for leverage to lessen the push/pull load on the cable itself.

I appreciate all of you who have offered sound advice when I'm stumped. This FED stuff is all new to me. I am thoroughly enjoying the build process and look forward to the car moving under it's own power!

Lynn

--- End quote ---
We are rooting for you.

Curly1:
On my Altered I built I put the battery in the back with a push off mechanical shut off. Then the battery cable goes to electric solenoid for a master kill switch that I can kill all power from inside my car. I turn main power on when I pull it out of trailer and use the inside switch during the day.

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