CD's and speed laser detection

[cagiva gezzer]

Just watched 'kerbside justice' on men&motors and they had a bloke with a bike with a cd attached to the front.

They started talking about how the cd is a class 1 laser product and the speed lasers are aswel. The theory is that the laser is messed up by the cd?!

Sounds like bull to me.
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"because one stroke isnt enough and four strokes waste two"

[craigT19]

i think so


the camers guns are radar? guided? so anything moving through an area will reflect the beam back, the time it takes to bounce back is calculated to give a speed reading??


i think so anyway
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Bikes owned :- 2001 nsr125, 1999 zx6r, 2006 yzf-r1, 2009 xmax 250, 2012 yzf-r1, 2015 MT-07
Current bike : - 2016 MT-10
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[mr jamez]

[Davo]

If anything it gives Mr. Policeman a nice flat reflective surface to aim his laser speed detector at.

I have heard this rumour before amongst some of my mates that could be classed as boy racers. I just smile and nod when they tell me

[dibbster]

Now if you covered your bike in the stuff they use for stealth bombers.
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[Davo]

[Dr Nick]

Quite a few boy racers round here, put about 4-5 cd's in their grill to it refracts, the flash from the camera.

But camera's arent allowed to flash at you?, just being you?
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is that it

[Phil.]

Car drivers have been at it for ages. All the cruise boy(z) at uni have them dangling from their mirrors. Personally i wonder if they have been hit in the eye with this class 1 laser. Their cars luck soo bad you would have to have dodgy eyes to think they look good.

I am usually told about the speed cameras by on coming drivers.

If there a law against bringing some bert backarack for the ride with you?

[rsooty]

[Zimbo]

I love boy racers!!

Mobile speed detection in the UK is pretty much all laser, they don't use radar at all, except in fixed units such as gatsos and mini-gatsos. Scamera vans use laser. Stealth radar cloaking devices are useless. I did see one boy racer who had imported from the States one of those anti-radar bra devices, fits all over the front of the car bonnet and grill to make it invisible to radar, or so the manufacturers claim. Unfortunately the only radar used in speed detection generally in the UK measures off the rear of the vehicle as you drive away, so sadly he's wasted his money and looks a twat as well. Gave me a giggle though.
CDs in your grill to reflect camera flash is also useless, the only units that flash are gatsos and they take you from behind. Since they are equipped with very high quality hasselblad medium format cameras the police can enlarge the picture and adjust the contrast of the print, and still read your plate easily.
Truvelos flash infra-red light from the front, but they'll still be able to read your plate, and the speed detection is done by magnetic or pressure strips on the road surface. Laser traps don't flash at all.
CDs won't confuse laser guns, if anything the perpendicular reflective surface will actually improve the performance of the laser gun!
The only device that will stop laser from getting your speed is a laser diffuser - a device fitted on the front of the vehicle that fires a bright burst of light at 905 nanometers - the frequency laser guns operate at - when a laser attempts to lock on to you. Since the emitted light is brighter than the laser reflection off the front of your vehicle the speed gun attempts to read that instead, and fails to work out your speed. They are a bit naughty though, there have been two sucessful prosecutions by police on the grounds that you're obstructing them in the course of their duty.

[Kickstart]

Hi

Lorry drivers tend to have loads of them on the front of their trucks, and I think the idea is that the CD reflects the laser all over the place. Doubt it works really, unless the police choose to aim at the CD.

All the best

Keith
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[yambabe]

I have been told that whether or not the cds reflect lasers/speed-traps etc one thing they do do is flash back & blind the idiot who is coming towards you at night with his lights on full beam.

They also make good wind-chimes when hung in trees for the more hippy-inclined.

[stinkwheel]

What you want is a couple of rear facing ALARM on the pillion

https://www.raf.mod.uk/equipment/a_slong.html

Nice piece of kit
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[Mr C]

[Davo]

I suppose the only possibility of a pilot being presented a warning would be something like an attack helicopter (apache for example) that has been fitted with a Laser warning reciever. The pilot would still have to manually engage the target.

I would also think that military radars are much more complicated than a simple gatso radar unit. e.g. the Radar warning reciever in a military aircraft would know the difference

My (also highly likely to be inaccurate)

[Ste]

[Mr C]

This is just the myth I was talking about.

No way would an armed RAF jet be flying over populated aera with the Master Arm switched to ON

also, the Sidewinder is an air to air missile and is not radar locked or sensitive, the AIM-9M is a heat seeker

if there is such a thing as automated response from an aircraft then it will almost certainly be defensive, ie chaff/flares rather than the offensive automatic targeting and releasing of a missile
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187.3bhp = 201mph

[rsooty]

[Mr C]

I was told this story in 1987 when I was at RAF Halton doing my Aircraft Technician training.

I doubt if it was true then and I still doubt if it's true now


I was also told a story about a sidewinder locking onto a masturbating female because she was so hot



c'mon, the instructors have a file full of these bullshit war stories
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187.3bhp = 201mph

[rsooty]

Well i disagree seeing as they explained why it does it and it's in the training books. But we all have our own opinions on things so i won't argue.

Sooty