Just got my first light, an Ultrafire WF 501B 150lm 800mA, last night from dx and I was impressed with the throw for the price. The light will be used on an air rifle / rimfire with a converging lens for vermin control.
I haven't even had it 24hrs and I want to start modifying. From what I have read, the XPE R2 appears to be the best green led for the WF 501B for throw with a converging lens. But I can't find an XPE R2 in green - XPEGRN-L1-0000-00E01 - R2 114lm @ 350mA, 1A max. From the data sheet, it should put out about 220/230lm @ 1A if I've read it correctly. This may not be a great improvement, but I'm hoping this low cost project will give me a bit of experience and the confidence to move onto bigger projects. Any suggestions where to get this LED would be appreciated.
Would you change the driver on the WF 501B to get the full 1A and if so what to?. Stupid question, I suppose you would.
I'm tempted to get a Jacob A60 and put a green XPE R2 in that as well just to see the difference. I'm getting hooked!
I did see the Q5 at mouser, but the postage brings it up to $24.42 / £15.69 which makes it twice the price of the 501B. I was hoping I could get it cheap from China.