Diy Projects For Anti-carjacking

**jimaroquai** · November 11th, 2005 11:10 AM

Originally Posted by ghosthunter

Round 1 - How about a stun gun system wired to a couple of metal plates under the door handles... 100,000 volts powered from the car battery. That should be enough to shock the bejesus out of them.

Round 2 - So the carjackers don't want to open the door? Install a propane/LPG fueled flame thrower under the chassis below the door frames. Trigger using a foot switch and watch ten to fifteen foot flames shoot sideways from the car and fry the suckers.

Sa Round 1. That is possible pero it will definitely drain your battery unless you put a separate battery.

Round 2. Possible din, pero hindi kaya abutin din ang gas tank mo?

**jimaroquai** · November 11th, 2005 11:12 AM

Originally Posted by zero

pwede kaya ang finger scan to start the engine?

Pwede, but that will defeat the purpose of this thread because the scanner itself will cost you about Php 35,000, more or less.

**kinyo** · November 11th, 2005 11:59 AM

Originally Posted by jimaroquai

Sa Round 1. That is possible pero it will definitely drain your battery unless you put a separate battery.

No, it won't drain the battery because such circuit will not require that much power, it has high-voltage but low current. The real obstacle is how to insulate the 100kV from the chassis ground. A 100kV can jump 3 inches of air.

However, the idea is cool. Using 1kV might be enough to give a painful shock and insulation would be manageable.

**beachbum** · November 12th, 2005 09:43 PM

mga pare, interested ako sa mga idea nyo. it's cool at mahilig din kasi ako sa mga ganito. tanong ko lang mawawala ba ang waranty ng car kapag nagkabit ako ng mga relays. TIA

**nugundam93** · November 12th, 2005 10:04 PM

nice idea ah. pero natawa din ako sa DIY #8.

**wildthing** · November 12th, 2005 10:37 PM

maganda ang most ng concept assuming pababain ka kaagad sa oto mo na kinarjack. as mentioned papaano kung isinama ka muna?!?

I am thinking na what if you control these fuel shut-off valves with a remote switch (just like the keyless entry remote) na hidden sa belt or pants mo (remember the old style pants na merun secret pocket?).

So you would "arm" your delay switch sa fuel shut off valve when you get off the vechicle...sisimple ka lang sa bulsa or sa belt mo when they left you off na.

OR

A remote switch na meron proximity sensor...so as long as the nearby ka the shut-off valve will be on. Pero pag napalayo ka na, mag-ooff na ito. Hindi ko lang alam kung meron nang ganitong electronic kits available.

**D4D** · November 12th, 2005 11:14 PM

Tama! Paano nga kung isinama ka muna at na-trigger na ang DIY mo??? Sabi nga ni Bitoy: "Yari ka!" Pero kahit hindi ka isinama, 50 meters lang? Ang mangyayari pala, pag-iwan sa iyo, dapat karipas ka talaga ng takbo in the opposite direction ala the Flash! At kung may back-up car o motorcycle na kasama, "Yari ka na naman!"

Nice ideas though kaya lang di ako marunong ng electrical/mechanical. Baka pwede pa-demo naman.

**jimaroquai** · November 15th, 2005 05:35 PM

Originally Posted by wildthing

A remote switch na meron proximity sensor...so as long as the nearby ka the shut-off valve will be on. Pero pag napalayo ka na, mag-ooff na ito. Hindi ko lang alam kung meron nang ganitong electronic kits available.

Actually meron na nito and nasa divisoria ako last weekend to look for one. It is a keychain with a tweeter. yung 1st part is nakaattach sa key chain while the 2nd part may be kept inside your pocket. kapag napalayo sa iyo ang mga keys mo eh tutunog siya.

ano ang idea dito? pagbaligtarin ang use nila. Use the 2nd part sa armature ng relay. Tanggalin yung tweeter at connect it to the armature ng relay. but you have to look for a low voltage armature which can react to at least 1.2v of power. yung 1st part naman ang ilagay mo sa secret pocket mo.

Voiding warranty:

Relays are not that destructive. Kung nagkamali ka, you will only fry P10 pesos worth of fuse which you could easily replace. Just dont work your way towards the ecu.

In case na isama ka:

Well, you could consider putting a second switch sa gitna ng second row seats where you could have access.

50 meters is not enough:

Gayahin ninyo ako, I always drive with my rubber shoes on. Para mabilis ang takbo ko kung sakali