Remote Kill Switch

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turbodiesel_67

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Mr. Krunch,

I have figured out how to operate the remote kill switch, referred to in this "old thread." It's going to work great. Anyone wanting to know how can post or email me. I won't post the solution so as not prolong the "old thread".
 
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eesakiwi

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I read a book years ago that described this idea very well.

I'll try & do my best...

Ok, they used a small transistor radio as the reciever.
& a small transmitter made from a Radio Shack store.

The transmitter is the sort they call a 'Bug', a couple of transistors & resistors etc on a board, cost about $10 each.

The idea is that you tune the radio to a part of the band wheres theres plenty of static.
Then tune the 'Bug' to transmit to the radio at that same frequency.
Now connect a relay to where the speaker is on the radio & connect the other end of the relay to the kill switch.
(you are gonna have to figure that bit out yourself, sorry)

Yeah, thats about it.

How it works?
Well, while the transmitter is transmitting, the radio will be silent, no static, because theres no power comming out of the speaker while its silent the relay won't trip.

But when you turn the transmitter off, or the reciever gets out of range, the radio will now pick up static, that static is enough electricity to trigger the relay & it will kill the engine.

Yeah, thats it.

I figured the idea is a good one as it can be fitted to the gocart & if someone (there always is..) won't get off the Gocart, just turn the bug off & the gocart dies.
Now they have to push it back to you.... haha.

Also, if its stolen, it won't work untill they figure it out.

& if someone drives the gokart out of the range of the transmitter (your specified driving area) it dies & they have to push it back to you again.
 
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squat251

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thats a slick idea...now to rig that up to someones car...i can just hear it now "i got about a half mile from your shop and the motor died" hehehe evil thoughts
 
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frederic

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noley99 said:
I want it for the safety factor. My son is only 5 and this is his first kart and I want to be able to kill the engine just in case he goes where he shouldn't. I have about 2 acres and there is highway near by. If you recall this kart is a bit extreme so my focus is safety. I will have it governed way back and maybe even throttled back to help keep him in check until he gets used to it. He will be able to grow into it for quite some time, that's why I am building it on the extreme side. Just want to make sure he's around to enjoy it for years to come.
Click to expand...

I started to build my son an electric car when he was two, and finished it a year later and had the same concerns.

I used the guts from a forward/backward remote control car my son sat on for the emergency remote kill switch and it worked excellent the four times I needed to push the button.

Mine drove a relay that would unlatch if I pushed the kill switch. To re-latch the relay I had to reach under the car and turn the ignition key to the "start" position and release to "On".

For cheap, imported garbage this free circuitry worked without a hitch. Three times this saved my son and the car from injury due to his looking at me instead of at the oak trees he was heading towards, and the fourth time saved him from zipping off the driveway into the street in front of a UPS truck.

I am most pleased.
 
Raywelder

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You could install an underground dog fence.
Then use the shock collar receiver to trigger a kill switch, so when the cart gets near the line, it shuts off.

Or you could put it around the driver :devil2:
 
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turbodiesel_67

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Wireless Kill Switch

I purchased the wireless kill switch listed here:
http://www.extrememotorsales.com/chineseatvparts.htm

It was dropped shipped from Tank Sports in El Monte, California. I think you can get the same part cheaper from them.

I cut off the OEM connector which had six wires. Two of them were for 12V power, two of them for a starter relay, and two of the were are an interrupt for the TCI module. I just hooked up my 12V battery to the power wires (in this case red and green), and spliced the interrupt wires (in this case they were both blue/white) into the TCI wire.

Now I can use the key fob that came with it to ground the TCI circuit. It works great!

P.S. This unit comes with an alarm that I don't use.
 
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GOKILL

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Guess I'm from the old school. I always thought, "Dont go pass the big OAK tree down there, or you don't go kart for a week." worked well?

Then there is always plan B.

You go pass that Big OAK down there again and I'm gonna beat your ***. no questions there....

Thanks to ray I now have a Plan C. :idea2: That was a cable stretched tight between 2 trees.... right?

very insightful thread.
 
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frederic

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GOKILL said:
Guess I'm from the old school. I always thought, "Dont go pass the big OAK tree down there, or you don't go kart for a week." worked well?

You go pass that Big OAK down there again and I'm gonna beat your ***. no questions there....
Click to expand...

I think it depends on the child. My son got his first homemade electric riding car when he turned three, and that seemingly is the age where children push their boundaries without making the connection that pushing too far has consequences.

For my son, a remote kill switch seemed necessary considering a select few of my neighbors buzz down the street close to 40 MPH when the speed limit is 15 mph. My remote kill switch also shorts the motor's power leads to act as a brake.

I felt that paranoia and taking every precaution is better than losing a child.

Considering the 11 y/o girl who lives in the house to my left got sideswiped by another neighbor while riding her bike last summer, I thought paranoia was not unreasonable.
 
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