Has anyone tried substituting an LED MR16 bi-pin bulb for the stock halogen MR16 bulb in their bike headlight? The brightest LED MR16 I've found is a 3 watt, 150 lumen, 12V DC LED MR-16 bulb sold by LED Liquidators for $39.97 LINK.
Next is the MR16-W4 White Nichia LED bulb (uses Three 1.3 Watt Nichia LEDs) LINK. The MR16-W4 Cool model is claimed to have 120 lumens at 5500K and costs $38.95.
Much less expensive but lumens not stated is a 2 watt (so probably less lumens) 16 LED bulb for only $13.90 at LED Liquidators LINK.
This all assumes the LED MR16 will not overheat the light fixture. Evidently incandescent MR16 bulbs radiate the infrared heat out the front while the LED M16 bulbs use metal fins on the sides. Thus some lights may be suitable for an LED substitute and other not.
Sooner or later I would think those of us with bike lights using halogen MR-16 bulbs will want to consider using a 12V DC LED MR-16 base bulb. Is now the time or should we keep waiting?