DIY emergency switch?

[sam1741]

hi everyone..


if u see race car..
got one big big red button

when accident.. those racer will pess the switch
then everything will be shutdown (no electric)
including the engine
so that there will be no explosion



so anyone know how to DIY that switch?
wiring?

 

[DarkAccoon]

i think for that you just need to wire your positive line from the battery to the switch lorrr
make sure the switch can stand the voltage larrr

nothing much to think of if you ask me
cause once you press the button, the positive flow will be cut, no spark will come out if any other positive wire were to touch bare metal

correct me if i am wrong
me amatuer

 

[sam1741]

but what about the ignition part?

for what i know
when the engine running..
u can disconnect the battery..
the engine still running

 

[Vyraz]

Originally posted by sam1741@Jan 19 2005, 13:11
but what about the ignition part?

for what i know
when the engine running..
u can disconnect the battery..
the engine still running

no laa..
thats only for bikes..
cars dont. take out the batt and the engine doesnt even crank

 

[chelnick]

Originally posted by Vyraz+Jan 19 2005, 14:14 --></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Vyraz @ Jan 19 2005, 14:14 )</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-sam1741@Jan 19 2005, 13:11
but what about the ignition part?

for what i know
when the engine running..
u can disconnect the battery..
the engine still running

no laa..
thats only for bikes..
cars dont. take out the batt and the engine doesnt even crank [/b][/quote]
dude... if your car is started.. you can run without the battery...cause power will come from your altenator(is this the part???) ;)

 

[sam1741]

so.. how to wire the switch?
the switch is not simple switch lor..
have to take care the battery part + the ignition part?

 

[Rein]

the switch is not wired to the battery. It's wired to the ignition. Once turned, it will cut off the power supply to the ignition, hence disabling the function of the sprak plug, finally killing the engine.

 

[DarkAccoon]

can it be wired to the earth (- negative) cable on the battery
once wired there
just say if the button is pressed and it disconnects the earthing
won't all parts be disable as well

 

[Vincew]

Originally posted by DarkAccoon@Jan 19 2005, 15:27
can it be wired to the earth (- negative) cable on the battery
once wired there
just say if the button is pressed and it disconnects the earthing
won't all parts be disable as well

This make sense.

Do we track the ignition cable from our start key to check where is the cut off?

The button is supposed to off the electrics car just like we turn the key to off right?

Any additional?