Old 05-12-2015, 07:03 PM #1
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Default Defensive

Alright I know this is a wild question but does anyone know what type of laser can cut or burn holes from 10-20 feet or more from the distance of the laser head?

I want to mount one under my car so I can give someone a flat if they are chasing me or trying to assault me with their car.


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Old 05-12-2015, 07:07 PM #2
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Default Re: Defensive

At least try to make it a believable & funny story if you trying to troll us. This is just spam.

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Old 05-12-2015, 07:44 PM #3
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Old 05-12-2015, 08:17 PM #4
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Default Re: Defensive

If you use a high power infrared laser to blow tires, anything that powerful could easily blind someone from a reflection. All of that said, rolling tires spread the heat from a laser beam as they continue to rotate, so it would take a far more powerful laser to blow a rolling tire. I don't know if I could afford a laser like that if I saved up for years, might need a pickup truck to mount it in.

I'm assuming he isn't trolling, maybe he is. But for sake of discussion, I don't think using a laser as a defensive weapon which could harm someone is legal, while a gun is. Maybe the skies the limit if you are defending your life? The idea of shooting someones tire out with a laser or a gun probably wouldn't be considered an acceptable response due to the harm you could cause to others....
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Old 05-12-2015, 09:58 PM #5
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Default Re: Defensive

As Alaskan said, anything that powerful would also be powerful enough to blind someone instantly. Your retina is a lot thinner than rubber from a tire.
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Old 05-12-2015, 10:19 PM #6
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Default Re: Defensive

Quote:
Originally Posted by kevinlt69 View Post
Alright I know this is a wild question but does anyone know what type of laser can cut or burn holes from 10-20 feet or more from the distance of the laser head?

I want to mount one under my car so I can give someone a flat if they are chasing me or trying to assault me with their car.
It's easier and safer to take their license number....some pictures...
and have police knock on their door another day.

Why not just mount a flame thrower or .50 cal machine gun on your car --would be a lot cheaper. lol

Another lunatic asked a similar question a while back but about a stationary tire from a few feet---cutting through the sidewall of moving tire would require much more power probably a pulsed laser several like maybe 10 kilowatts more--see here: http://laserpointerforums.com/f53/ev...ous-57836.html

Best answer was post 12 which said :
"40 watts of CO2 laser, O2 at 20 psi as assist gas, 12 cm focal length lens, aimed at the sidewall, much less then 2 seconds.
However the 4 foot long, bright yellow, Firestar F1 chassis is a little difficult to hide.
You do not get a hole if you do not get the burnt carbon gunk out of the wounded area. The laser lights the plasma and guides it, the O2 does the work and blasts the debris clear."

A couple of opinions can also be found here: http://laserpointerforums.com/f54/ne...ser-62681.html

One guy says: "Pulsed lasers will only vaporise the surface, you'd need a CW beam to penetrate the tire. This CW beam will need to be focussed on a moving target, which will spread the power across a circle on the tire. Car tyres burn instead of melting, so the heated rubber won't move out of the way for the laser to cut deeper. The power needed to cut through a tire across the whole surface is probably in the multiple kilowatts range. This assuming the focus can be kept steady on the tyre."
Another guy says: " It would be possible to do so with a very powerful co2 or pulsed yag/ruby laser and some kind of computer controlled focusing/aiming system but it would be very likely to injure the occupants of the vehicle and/or bystanders rather than safely stop the car.As for affordability, how does years of R&D and then tens or hundreds of thousands of dollars per system sound?
Also with a laser this powerful everybody in the area would need to wear very good safety glasses (even the people in the car), even looking at the spot where the laser hits could blind you. Not to mention the fact the laser would be HUGE (possibly several tons)."

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Old 05-12-2015, 10:25 PM #7
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Default Re: Defensive

Try a CO2 one... And then get arrested.
They are fairly efficient and at a wavelength of 10600nm, you can be sure that it will be readily absorbed with ease. You could get one with kilowatts of power wich is a terrifying amount of power. Of course there's the issue of the terrible divergence, so I would suggest something else.
Maybe a 405nm one could do the job (dot can be focused to a tight spot) but I don't know how much power you can get out of a laser like that...
In other words, good hypothetical question but don't even think of mounting a laser on your car (If you even own one)
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Old 05-12-2015, 11:16 PM #8
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Default Re: Defensive

Seriously get this troll scum topic off of LPF before someone gets a fail idea after browsing this thread.
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Old 05-13-2015, 12:57 AM #9
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Houston, we have an idiot. I repeat, idiot confirmed.
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Old 05-13-2015, 01:25 AM #10
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Yeah don't feed the troll folks.
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Old 05-13-2015, 01:32 AM #11
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I wonder if op is a returning banned troll?

like a guy banned about a month ago.

Just look at his user profile picture when you click it.

This is what you call a "gimmick account."
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980nm with weak cyan line focousable

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Old 05-13-2015, 02:18 AM #12
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Default Re: Defensive

You know what happens when someone's tire blows while traveling? They lose control and crash. Even if you're the most skilled driver on the planet you will still lose control. If you did that to someone you could have potentially killed them and everyone in their vehicle. Especially if they are pursuing you since they will be traveling past the speed limit.
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