Lebro Posted September 1, 2014 Report Share Posted September 1, 2014 Refering to a new topic by RODBR in the Buy/Sell/TRade forum Thanks for the tip Boggie. I have been considering LED rear lights for a while now. Already have LED in my centre (brake + number plate) light, just ordered a pair of COB 380's from "Better car lighting" at £27 the pair. (+ VAT of course) for the outside rears - these are stop / flasher & tail 380 HP COB LED Stop Tail Neg X 2 Decide to leave the front flasher bulbs for now, but may upgrade to the orange ones in the future. Same for side lights (located in the headlamp in my case) & I already have halogen headlamps which are very good. Bob. Quote Link to post Share on other sites
Drewmotty Posted September 2, 2014 Report Share Posted September 2, 2014 I have also been looking at an LED upgrade. Some vendors extol the virtues of using red LEDs under red lenses as white ones alegedly tend to iluminate pink. Does anyone have any experience or comments on this before I get my wallet out? Andrew Quote Link to post Share on other sites
peejay4A Posted September 2, 2014 Report Share Posted September 2, 2014 Bob, are they red LEDs? Quote Link to post Share on other sites
Lebro Posted September 2, 2014 Author Report Share Posted September 2, 2014 Pete. No, they are white - this company do not seem to do red ones - maybe the COB technology does not allow red ? any way ordinary bulbs are white, so I would have thought they would be OK. Will report back with Photos when they arrive. Bob. Quote Link to post Share on other sites
peejay4A Posted September 2, 2014 Report Share Posted September 2, 2014 (edited) Pound to a penny they will show pink through the red lenses. The LEDs emit a very different spectrum to incandescent lamps. Edited September 2, 2014 by peejay4A Quote Link to post Share on other sites
Lebro Posted September 6, 2014 Author Report Share Posted September 6, 2014 OK, The COB LED stop / tail bulbs arrived this week, & I have just got around to trying them. Colour wise, I do not have a problem, but even though they have LED's on the side as well as the end, they are not any improvement over standard bulbs in a TR3. I think in a rear lamp which takes the bulb horizontaly (TR4 etc ?) they would be good, but the TR3 lenses are positioned to be exactly in line with the filament of a normal bulb, whereas the LED element is about ½" above the lens part, & so view from a distance the normal bulb looks brighter. Would probably work well on the front of a TR3 etc where the bulb would point forward. I have only a single filament bulb here (flasher) as my sidelights are in the headlamp reflector. So, I will be passing these on on the Buy / sell / trade area to anyone who is interested. Bob. Quote Link to post Share on other sites
Rodbr Posted September 6, 2014 Report Share Posted September 6, 2014 (edited) Hi Bob, Exactly what I found with the sides screen rear lights, no brighter in rear view but illuminated the ground well. I agree that they would work well in a Tr4 as the bulbs are parallel to the ground. Before you sell them on perhaps it would be worth trying a strip of that stick on mirror stuff behind the light. If I could find Led's like these used on the video I would try them Edited September 6, 2014 by Rodbr Quote Link to post Share on other sites
Lebro Posted September 6, 2014 Author Report Share Posted September 6, 2014 The LED cluster in the above video have been places behind the reflector. For the best result we want something similar which is at the same height as the lens, which is lower down. I think I have seen some like this, with all the light coming out sideways in only one direction, but they are very expensive. Bob. Quote Link to post Share on other sites
peejay4A Posted September 6, 2014 Report Share Posted September 6, 2014 For maximum effectiveness you'll want red LEDs behind red lenses. Quote Link to post Share on other sites
tosachnua Posted September 6, 2014 Report Share Posted September 6, 2014 Depends on how many LED's there are in your bulb as well. There are 92 in mine....the 380 Ultimate Canbus (red) from autobulbsdirect.co.uk £29.99 the pair. Quote Link to post Share on other sites
Lebro Posted September 6, 2014 Author Report Share Posted September 6, 2014 Had a look at these, trouble is only the ones near the centre will be at the right height for the lens in the red cover. The COB ones are different construction - there are four LEDS around the side, & 1 on the end. The cover a large area each, & consist of a large number of "chips" see link below: http://www.cob-led.com/What-is-cob-LED-chips-on-board.html I have come to the conclusion that the sidescreen rear lights are best with a "point source" of light, which an old fashioned bulb gets quite close to. Bob. Quote Link to post Share on other sites
EdwinTiben Posted September 8, 2014 Report Share Posted September 8, 2014 I have created the kit in the video of rodbr. Perhaps the reflector has impact on the light, But this is a Nice and functional modification. Works great ! Quote Link to post Share on other sites
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