Originally Posted by
KnhoJ
If this is true, they're not using 3 single emitters. The XP-G R5's (most efficient currently available single emitter led) are good for a dynamo-limited 500ma output of 190-some lumens each. The S2's might hit 220 lumens, but they're not available beyond a few samples for testing.
You're assuming the dynamo is only putting out 500mA. In fact you can get over an amp with the proper circuit (it is peaky though).
See this thread over at CPF.
http://www.candlepowerforums.com/vb/...d.php?t=202121