LED Headlight bulbs

[patzer]

Just browsing ebay and found these

http://cgi.ebay.ie/Xenon-HID-Conversion-Ki...=item3efaf4eab0 (http://cgi.ebay.ie/Xenon-HID-Conversion-Kit-H7-LED-Bulbs-55w-Pair_W0QQitemZ270498327216QQcmdZViewItemQQptZUK_Ca rsParts_Vehicles_CarParts_SM?hash=item3efaf4eab0)

Does anyone kinow anything about them?

Any use, same as HIDsetc

anything would be welcome?

Thanks

Pat

[kite]

You might get a "bulb oyt" warning with them....

[martin1810]

I fail to see how a collection of LEDS can put out the amount of light equal to an ordinary bulb. Have you tried using an LED torch. They look bright to look at but when it comes to use they are often hopeless.

[zollaf]

you want to try some expensive led torches. my bike lights are super bright, but are £160.

[snapdragon]

They will be no good except for show in those extra show lights you see on trucks, you would need something like CREE 36w emitters to give the same light as an H7, and it would cost about £600 each side. LED headlamps are available on new cars such as top range lexus, but are very expensive and not SMD like above, they are arrays mounted on heat sinks with controllers and fans.

[808]

If u do get some tells us all what u think off them.

[martin1810]

Hi zollaf...I used to sell expensive LED torches. None of them seemed to throw the beam a great distant like a headlight bulb does, but none of them cost £160 either.

[caldirun]

I fail to see how a collection of LEDS can put out the amount of light equal to an ordinary bulb. Have you tried using an LED torch. They look bright to look at but when it comes to use they are often hopeless.
The last quality you would want in a car headlamp, looks very bright to on-coming traffic (the eye is very sensitive at these frequencies) but the landscape is dimly lit (most objects reflect these frequencies poorly), much like HIDs but worse!

[snapdragon]

These should be illegal, it is disgusting to sell this trash as legal.
The optics of a lamp require the filament to be in a VERY precise position. These will scatter it everywhere.

Such irresponsible action is sure to cause a backlash problem...reaction...solution and we will have the EU or government crack down on us or tighten MOT test to check that everything is bog standard.

[limecc]

I regularly frequent flashlight websites, so this thread was of interest to me.

LED's are being developed at a very fast pace. I'm not talking about the pathetic type sold on your petrol station forecourt with £10 of fuel, instead Cree XR-E R2's, Cree MC-E's and SSC P7's. Read about them and get the reviews here:
http://www.candlepowerforums.com/vb/index.php?

http://www.light-reviews.com/reviews_18650.html
If you click the 'max lux' column twice to sort by highest output, we can see that a properly designed 3w R2 Cree (Tiablo A10) will out-throw a good 10w HID. Still a long way to go till we see them on car headlights, but very impressive.

Many people mount these type of lights on their cycles using these:
http://www.4sevens.com/index.php?cPath=92&osCsid=35ab51ba508fd30676ca0f4452058ecd

A lot of the high-end lights from manufacturers like Dereelight, Nitecore, and Tiablo have had their designs copied in China. These are sold under different names but can be had for as little as £30 inc delivery. Not bad for 250 lumens! If anyone wants to know more, I will post additional details.

The bulbs referred to on Ebay cannot possibly be any good because of the heatsinking requirement the brightest LED's need, in order to survive. There isn't any in this case! Instead of 3w per LED, it's 1w for the lot! What a nerve comparing them to the HID kits, which would seem to be worthwhile upgrades.

[martin1810]

I have no problems with LED claims about light output, they are bright. It just seems to me that LED's don't throw the light as far as other types of bulb.

[patzer]

Hi Guys

thanks a million for all your input.

It did seem a little too good to be true and now I believe that it is. I think its a fair point that comparing them to HIDs is very misleading, the only thing comparable is probably the colour of the light. I think after many months of "will I, wont I", a HID kit will be my next purchase.

These bulbs probably wouldn't even be strong enough for a set of fog lamps.

Again many thanks for your comments and for the links posted.

Merry Christmas to everyone :biglaugh:

Pat