BSRU wrote:I recently received some 5w led MR11's from China that I took a punt on from EBay, cost £12 for 3 including the shipping.
They are supposed to be equivalent to a 35w halogen, I do not know if this is true but they are brighter than my 20w halogen bulbs. Cannot use them for real yet as they have no front protection so need to sort something out.
gentlegreen wrote:BSRU wrote:I recently received some 5w led MR11's from China that I took a punt on from EBay, cost £12 for 3 including the shipping.
They are supposed to be equivalent to a 35w halogen, I do not know if this is true but they are brighter than my 20w halogen bulbs. Cannot use them for real yet as they have no front protection so need to sort something out.
Any chance of a link ?
My MR16s are lovely things with quality optics - even at about £17 plus postage they were a bargain.
) me to this point.Graham wrote:I will return to this post and edit in some of the links that have led ( geddit ?
ransos wrote:I'd be very interested in the result. I have a spare Lumicycle lamp housing and NiMh battery - this could be just the ticket. Do you know what the light output is? What about the beam angle?
gentlegreen wrote:So the Lumicycle halogens had unfettered conical beams ?
gentlegreen wrote:Coincidentally, I have a couple of these on the way for my bike :-
gentlegreen wrote:£9 including post. Over-sized MR16 though - so strictly DIY - And they look like they may be the 30 degree beam I want, but I won't know until they arrive.
gentlegreen wrote:I will be fitting a hood to my dipped beam one ...
Graham wrote:ransos wrote:I'd be very interested in the result. I have a spare Lumicycle lamp housing and NiMh battery - this could be just the ticket. Do you know what the light output is? What about the beam angle?
Quick response :
There appear to be two major options
triple XRE with spot-like optics - giving an output estimated of 550 lumens approx . . . . 680mA driver ====> good enough for road, with loooong runtimes
triple XRG with flood-like optics - giving a significantly higher lumen output, but spread over a wider area . . . . I think that they are recommending a 830mA driver for this one.
======> good enough for off-roading, but with slightly shorter ( but still long ) runtimes.
Note : Above, I'm paraphrasing and garbling the contents of several long threads on SIngleTrack forum. . . .and events are constantly moving on.
http://www.singletrackworld.com/forum/t ... step-guide
Incandescent lights are clearly the worst choice we can do. Their very high consumption of energy lies in their low conversion rate. Incandescent light bulbs - traditional or halogen - convert only 5% of energy into light, the rest is emitted as heat. Besides, these light bulbs have a very short lifespan, so they have to be purchased very often.
Fluorescent lights are somewhat better choice. They convert about 20% of the energy into light, and have a longer lifespan ranging from 1000 to 10000 hours depending on the product. They still don't mean a radical change in your electricity bill, but definitely reduces it, and they are not the most expensive buys either. The environment, however, suffers the most of this type of lighting, containing poisonous chemicals like Argon and Mercury released to the air whenever one light breaks, and also most of its parts are not recyclable. Also, fluorescent lights struggle with lighting up, depending on the model it might take several minutes to gain full brightness.
Installing light emitting diodes (LED) is a huge step in saving energy. Their conversion rate is 80-90%, they hardly emit any heat and consume only a few wattage in the case of a regular light bulb. If you replace your incandescent light bulbs with LED lights the money spent on lighting bill will reduce with 80-90%, but even if you replace fluorescents with LEDs the money saved is roughly 50%, not to mention the life-span of the LED, which works for 3 to 10 times longer than fluorescent bulbs or tubes. Recently LED lighting products have developed at such a fast pace that an incredibly wide range of products and solutions have become available. Not only home light bulbs are replaceable but street-lights, flood lights, wall washers, advertising panels or television sets operate with it, and provide a whole range of new lighting solutions.
