Where to put LRC100 and laser detector-front/back?
Where to put LRC100 and laser detector-front/back?
Author
Discussion

David A

Original Poster:

3,704 posts

272 months

Monday 1st December 2003
quotequote all
Ok So I've got a B2 and an LRC100 diffuser. Question is that if I've got the diffuser at the front - does this also alert me to being talivand? If so shouldn't the laser detector that came with the B2 go on the back of the car to tell me at least if I'm being zapped from the back?

Gets installed on Friday so be good to know!


Cheers

Dave

streaky

19,311 posts

270 months

Monday 1st December 2003
quotequote all
The laser detector with the B2 senses (FWIW) laser emissions behind and in front of the vehicle - Streaky

David A

Original Poster:

3,704 posts

272 months

Tuesday 2nd December 2003
quotequote all
How does it do that then?

Dave

streaky

19,311 posts

270 months

Tuesday 2nd December 2003
quotequote all
It has three forward facing sensors and one rearward facing sensor in a single housing that is affixed (usually) to the windscreen. This is just a sensor to trigger a warning, it does not 'fire' anything back. That is the function of the LRC-100 (in the case of your enquiry) and you would need one forward and one rearward facing to provide fore and aft protection. The B2 has provision for connecting one LRC-100, but you might be able to adapt it for two - Streaky

355f

516 posts

269 months

Tuesday 2nd December 2003
quotequote all
Just for information!

puttingan LRC100 on the back of a vehicle is a complete waste of money.

Speaking to steve warren who tests these things he confirms that for some reason they have never been able to succesfully jam a car from the rear

RichB

55,003 posts

305 months

Tuesday 2nd December 2003
quotequote all
With regard to rearward shots, presumably the B2 would have previously "detected" laser and given you a warning, allowing you time to slow down - if you think about it it's oinly forward hits that will get you before you have a chance to react? R...

cptsideways

13,783 posts

273 months

Tuesday 2nd December 2003
quotequote all
If you've picked up the signal on your sensor then you have been clocked already - Too Late & no you can't react within 0.3 seconds anyway. Waste of time knowing you've been clocked, except you'll know when posty is coming with NIP.

The LRC100 will do the job of blocking his signal, front mounted as this is where they target you 90% of the time.

RichB

55,003 posts

305 months

Tuesday 2nd December 2003
quotequote all
cptsideways said:
If you've picked up the signal on your sensor then you have been clocked already

Perhaps I’m not making myself clear? What I mean is; if you are hit from behind then presumably the laser gun is either hand held or in a van on the opposite side of the road facing up the road. So... as you approach the van from the other direction you will get a warning from your B2 that there is laser around, then you can slow down as you pass the van before he can get you with his laser. Agree? Rich...

>> Edited by RichB on Tuesday 2nd December 11:34

Richard C

1,685 posts

278 months

Tuesday 2nd December 2003
quotequote all
1 Infra red ( LTI is 904 nanometer wavelength ) does not easily pass through glass so inside the windscreen is not going to work or will be far less sensitive.

2 The LTI beam is 3 milliradians ( 0.17 degrees ) so its rather thin. It does not spread around but might be reflected from roadsigns or other cars maybe enabling a detector to pick it up.

3 As mentioned before, the LTI uses a 300 millisecond burst of pulses to calculate your speed. By the time your detector bleeps, if the LTI gets a valid return you've been nicked

David A

Original Poster:

3,704 posts

272 months

Tuesday 2nd December 2003
quotequote all
Eh? So where should they fit them then?

Also with the B2 in a Maserati 3200 wheres the best place for the GPS antenna?

Cheers again

naetype

890 posts

271 months

Tuesday 2nd December 2003
quotequote all
RichB said:

cptsideways said:
If you've picked up the signal on your sensor then you have been clocked already


Perhaps I’m not making myself clear? What I mean is; if you are hit from behind then presumably the laser gun is either hand held or in a van on the opposite side of the road facing up the road. So... as you approach the van from the other direction you will get a warning from your B2 that there is laser around, then you can slow down as you pass the van before he can get you with his laser. Agree? Rich...

>> Edited by RichB on Tuesday 2nd December 11:34


I was zapped from behind (Euro 550 went of like a banshee) by a mobile unit on my side of the road (white van in a driveway no markings ). No prior warning as there was no laser 'scatter'. So generally if it's a mobile laser then you'll not get any warning until you're zapped. There is laser scatter but it's not that big (I'm sure there's a techie explanation somewhere on these forums).

Richard C

1,685 posts

278 months

Tuesday 2nd December 2003
quotequote all
IMO you need one front and back. There is no technical explanation why an LRC works from the front but not the back other than

1 They target the number plate as its the best reflector and the rest of the front of any streamlined car will not reflect so well

2 The rear presents a better large target. At short range the laser 'spot' is fairly small and may miss the detector whereas one mounted near the number plate at the front will most likley be hit.

3 Hiding a detector at the rear is not so easy.

The Welsh Talivans do like to target you from the back. If you head towards one targetting your front you can see it; but if its hidden behind an obstruction as you approach it you either don't see it or spot it in your mirror while too late.


buckshee

106 posts

266 months

Tuesday 2nd December 2003
quotequote all
The Welsh Talivans do like to target you from the back.

[/quote]

It must be a Welsh thing, I believe Wellington boots are usual worn too! :bounce

NugentS

699 posts

268 months

Tuesday 2nd December 2003
quotequote all
355f said:
Just for information!

puttingan LRC100 on the back of a vehicle is a complete waste of money.

Speaking to steve warren who tests these things he confirms that for some reason they have never been able to succesfully jam a car from the rear


Cough

mybrainhurts

90,809 posts

276 months

Tuesday 2nd December 2003
quotequote all
NugentS said:

355f said:
Just for information!

puttingan LRC100 on the back of a vehicle is a complete waste of money.

Speaking to steve warren who tests these things he confirms that for some reason they have never been able to succesfully jam a car from the rear




Cough


Thank you, Mr NugentS. You may pull your trousers up........

Richard C

1,685 posts

278 months

Wednesday 3rd December 2003
quotequote all
said:
Just for information!

puttingan LRC100 on the back of a vehicle is a complete waste of money.

Speaking to steve warren who tests these things he confirms that for some reason they have never been able to succesfully jam a car from the rear


Don't know who Steve Warren is but perhaps he couldthe 'some reason' could be explained better than I have.