Surefire U2 Lux5

iocheretyanny · Oct 17, 2008

Questions:

My Surefire U2 head is a bit purple. Are all U2 heads a bit purple or just some?

The low level is rated at 2 lumens but seems much brighter - is that correct?

Has anyone modded these with a P7 yet?

Illumination · Oct 17, 2008

I've been wondering how to upgrade a U2 as well.

https://www.candlepowerforums.com/posts/2657008#post2657008 https://www.candlepowerforums.com/posts/2657008#post2657008

gswitter · Oct 17, 2008

An MC-E should be any easy swap. I've got a pair of U2's awaiting that upgrade.

tebore · Oct 17, 2008

If you use a 17670 or have a 18650 tube not using 2xCR123 will allow you to use a robust emitter for more light and increased runtime. When the P4 first came out people swapped it in but the levels were a bit off.

If you're looking for increased efficiency without much modding I'd say the K2-TFFC emitter shoehorned in will work. This is so you don't have to mess with the reflector.

The only other cool upgrade I've seen is the 4 rebel milky has been doing. That's a bit more work.

Illumination · Oct 18, 2008

gswitter said:
An MC-E should be any easy swap. I've got a pair of U2's awaiting that upgrade.

Please post when you have finished...sounds very interesting.

greenLED · Oct 18, 2008

iocheretyanny said:
Are all U2 heads a bit purple or just some?

Just some; it depends on the anodizing batch. My first and last U2's had black heads, the others were purplish.

:)> · Oct 18, 2008

I have had U2's that looked a bit purple and currently have one like yours. The low setting is more than 2 lumens by a large margin in all of the U2's that I own (4) and have owned.

DM51 · Oct 18, 2008

One of my A2-BKs has a sheen rather like that, so it isn't just U2s.

Surefire U2 Lux5

iocheretyanny

Enlightened

Illumination

Flashlight Enthusiast

gswitter

Flashlight Enthusiast

tebore

Flashlight Enthusiast

Illumination

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greenLED

Flashaholic

:)>

Flashlight Enthusiast

DM51

Flashaholic

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