Landracing Forum

Tech Information => Technical Discussion => Topic started by: ggl205 on August 02, 2019, 08:01:21 PM

Title: Master switch
Post by: ggl205 on August 02, 2019, 08:01:21 PM

I have a quarter turn master switch and would like to relocate it inside the driver cockpit. Rules mention a cable or rod to actuate this switch. I am curious how some of you installed your master switch inside the car but actuate it from outside. My car is a lakester and the body comes off frequently.

TIA,
John

Title: Re: Master switch
Post by: Speed Limit 1000 on August 02, 2019, 08:14:59 PM

John, The switch on the Bockscar was in the nose with a cable to the back of the car and the pull to turn off built into the push bar.

John

Title: Re: Master switch
Post by: ggl205 on August 02, 2019, 08:36:04 PM

Thanks, John. I am relocating all electronics high in the driver compartment with all relays, buses, ground and hot terminals mounted on a 1/4? aluminum plate for easy access. I would like to have the master switch close by too.

I will take a look at Bockscar when rob returns to Wichita.

John

Title: Re: Master switch
Post by: Speed Limit 1000 on August 02, 2019, 10:48:12 PM

We wired the car with relays running just about everything. The switches only supply the coil ground for the relay. Keven and Jeff tried to add something one year and were very confused that only grounds were on one side of the switches no power.

Title: Re: Master switch
Post by: ggl205 on August 03, 2019, 12:00:05 PM

Dave Dahlgren suggested I stay with positive power to the master shutoff switch. I used to use negative ground to the master.

The more I thought about this, the better I liked using a long pull cable with T-handle, to turn the master switch off. But it will be one very long cable.

John

Title: Re: Master switch
Post by: manta22 on August 03, 2019, 12:18:23 PM

John;

I have a push-pull cable running from my cut-off switch to the nose of the car and an actuating rod inside the cockpit. Either will switch the battery on & off. My switch is a big Moroso switch with a lever arm that I fabricated from aluminum plate.

Regards, Neil  Tucson, AZ

Title: Re: Master switch
Post by: ggl205 on August 03, 2019, 08:30:51 PM

Thanks, Neil. I like what you did for a better lever arm on the switch. I too have a big kill switch with a heavy release. I like your idea and looks close to what John and Rob use on Bockscar.

I think you just saved Stainless hours of my intrusion scoping out his lakester.

John