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15th January 2021, 16:01 | #21 | |
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1.8t Tourer Join Date: Oct 2011
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Quote:
That might be a good enough approximation for 'raw' bulbs, but once in a light housing the actual lux output at distance depends as much, if not more on the reflector and lens of the lamp. I recently watched some tests of LED headlights, and it wasn't the highest lumen output lights (or even highest wattage) that put the most lux on a wall 25ft ahead. fyi: lumen measures total light output from a light source. lux is a measurement of the amount of light over a given area. So high lumen output often doesn't mean more lux on the road where you want it, that is down to the focusing of the lamp as a whole (bulb, reflector and lens).
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Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk) Where?: https://en.wikipedia.org/wiki/Tanelorn Mods/Retrofits: PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors To do: puddle lights; 2 Din cd/nav to fit; boot release button |
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15th January 2021, 16:51 | #22 | |
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MG ZT 190 SE Join Date: Oct 2017
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Quote:
Add to that colour rendering in my namesake units of temperature. |
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15th January 2021, 20:20 | #23 |
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ROVER 75 SALOON Join Date: Apr 2017
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Does Ricksta know the full implications of this new legislation .I would have thought he would have investigated if his previously sold mods were now in fact illegal .
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16th January 2021, 07:50 | #24 |
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Rover 75 Tourer/ MG ZT-T 400 Join Date: May 2012
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Without the E mark you can fit anything as they’ve not been type approved but you can only fit what was tested in the E marked lamp. Practical Classics magazine did the article and I’ve still a screenshot somewhere
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16th January 2021, 09:02 | #25 | |
This is my second home
MG ZT-T 190 Monogram Typhoon Join Date: Jan 2009
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It sounds to me that fitting anything other than filament bulbs into a reflector type headlamp unit will be a fail. |
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16th January 2021, 09:32 | #26 |
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MG ZT+ CDTi Join Date: Feb 2014
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Interesting read
Last Wednesday my 75 went in for the MOT with LED bulbs fitted to halogen projectors, no rubber caps fitted so he could see them fine. No comment at all on the bulbs. Failed on the 2 holes in the sill though ....... Will see what happens next week on the retest. The ZT has lexus rear lights e approved fitted with standard filament bulbs and LED front indicators / DRLS so will see what happens in May Oh and the ZT lights were reported to the insurance company who just recorded them with no issue. Scott |
16th January 2021, 09:37 | #27 |
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That would be my understanding of the issue being HID/LEDs being put into reflector units as they would clearly be designed for the filament lamp and the majority of cars now have clear lenses and the beam pattern is controlled by reflector design - I think this also contributes to far more dazzle. Far more advanced than the old Lucas 7" round lamp.
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16th January 2021, 15:30 | #28 | |
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Rover 75 Saloon Join Date: Feb 2015
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Quote:
Sent from my SM-G975F using Tapatalk |
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16th January 2021, 22:09 | #29 |
This is my second home
R75 Saloon. Join Date: Feb 2009
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How about those daylight running LED lights. Some of those are extremely bright.
I thought they were supposed to switch off at night automatically though I'm sure I've seen some working all the time.--- |
17th January 2021, 08:58 | #30 |
Been absent for a while…
Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007
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Factory fitted day time running lights turn off when headlights are turned on, some manufactures also design their cars so that once you apply the hand brake this also turns off the daytime running lights
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................................................. 'Marmite' Possibly one of the most famous 75 tourers produced! left the production line as the last of only Three Rover 75 tourers produced in Trophy Yellow. 48 hours later Longbridge closed. The last sold ordered 75 Tourer. Paid for by the Phoenix Four and handed over by John Towers to the Warwickshire Northampton Air ambulance service as a Rapid Response vehicle |
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