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  1. #1
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    New question here. LED P4 highest efficacy lm/W

    Hi. In 2006-2007 the SSC Seoul P4 U-bin was unleashed and it was spectacular boasting 100lm/watt. i see that now the Cree XP-G boast 148Lm/watt and I am sure that other manufactures have similar LED available BUT the form factor is a huge issue considering that you can't replace the old P4 with the new LEDS!!!!

    Is there a P4 pout there that can be used to boost the light output?
    can I use a P7 W-Bin they look allot bigger and I am not sure if old P4 lenses will fit the P7

  2. #2
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    Quote Originally Posted by jjziets
    Hi. In 2006-2007 the SSC Seoul P4 U-bin was unleashed and it was spectacular boasting 100lm/watt. i see that now the Cree XP-G boast 148Lm/watt and I am sure that other manufactures have similar LED available BUT the form factor is a huge issue considering that you can't replace the old P4 with the new LEDS!!!!

    Is there a P4 pout there that can be used to boost the light output?
    can I use a P7 W-Bin they look allot bigger and I am not sure if old P4 lenses will fit the P7
    No big advances in the P4... no V bin.
    Best you can do easily is get a U3 bin P4. Its 109-118lm@350mA. Probably a decent bump from whats in there at the moment (I think T bin maybe 85lm@350mA)
    DIY LED Bike Lights:
    A few Dynamo builds and some Small battery lights

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