SUREFIRE G2 CPF-50

SureFire G2 CPF-50 Model, (Currently no longer available)
Manufactured by SureFire (www.surefire.com)
Last updated 04-21-11




The SureFire Nitrolon G2 CPF-50 is a very special, limited edition flashlight that SureFire had made for Candlepower Forums, a group of people who are nuts about flashlights, LEDs, and other glowing things. (I'm a moderator of two of those forums, so I must be really nuts about flashlights, LEDs, and other glowing things!!!)
There were only 50 of these things made, so you probably can't get them anymore.

It works the same as the regular Nitrolon G2, so if you end up with one of those, you can use this page as a reference.

The flashlight uses two CR123A lithium cells and a SureFire P60 incandescent lamp, providing 65 lumens of light for about an hour per battery change.

A page about the standard Nitrolon G2 can be found right here if you're interested.


SIZE



To use the CPF-50 Special, first be sure to load batteries in it. See just below for more information on that. Once you have batteries in the flashlight, it's ready to go.

To get a shot of light anytime, push down the rubber tailcap. To shut it off, just let back up on the tailcap.

For continuous light, twist the tailcap clockwise (as if tightening it), and the light will come on and stay on. Twist the tailcap counterclockwise (as if loosening it) to turn the G2 off.

There is no LOTC (Lock Out TailCap) position, so you might want to take the batteries out when putting the flashlight in a location where it might get squished, such as in a backpack, box of camping supplies in the car, etc.



To change the batteries in the CPF-50 (or regular SureFire Nitrolon G2), unscrew and remove the tailcap, and tip the batteries out of the flashlight and into a garbage can (or the dead battery box, if your community has a battery reclamation program). Insert two new CR123A lithium cells into the barrel, button (+) side first. Screw the tailcap back on, and back it off a bit when the G2 comes on.

The CPF-50 model uses 1.11 amps of power with the standard P60 lamp assembly it comes with.



I haven't punished this sample a lot because it is a very special edition.
Somebody else who has a regular Nitrolon G2 will have to do this part. :-O



Beam photograph at ~12".
Measures 1,160 foot-candles.


Spectrographic analysis
Spectrographic analysis of the lamp in this flashlight.


Spectrographic analysis
Same as above; newer spectrometer software & settings used.
USB2000 spectrometer graciously donated by P.L.


ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.


A video of this flashlight and the Light Cannon 100 HID flashlights attempting to nock the Syma S107G R/C Coaxial Helicopter out of the air.
You can guess who wins...if you guessed "the flashlights" then WRONG SOONG! WRONG SOONG!! {from the Star Trek: TNG episode "Brothers}......er...uh...I mean, "You guessed incorrectly!"
Even with intense light (both from incandescent and HID sources) falling directly onto the heli's sensor, nothing at all unfortunate happened to it!

I thought that the HID light would have brought the heli down, but examination of its spectrum showed relative lack of NIR (near-infrared) spectral lines -- the part of the spectrum that the heli's Rx would be most sensitive to after seeing it not come down when irradiated with powerful lasers and other visible light sources.

This video is approximately 2.60226568590 megabytes (2,778,433 bytes) in length; dial-up users please be aware.
It will take no less than twelve minutes to load at 48.0Kbps.



TEST NOTES:
The CPF-50 flashlight you see on this page was received early this year (2003), courtesy of a couple of Candlepower Forums members; David W. and John W. ("Illuminated" on CPF). Thanks guys!!!
I wasn't sure I'd put it on my website, but here it is for everybody to gawk at. :-)

PK (Paul Kim), vice-president of Engineering for SureFire, made this donation to help with bandwidth costs at Candlepower Forums, with the approval of president, founder, and owner of SureFire LLC, Dr. John Matthews.

One of the threads about the SureFire Nitrolon G2 CPF-50 Edition on Candlepower Forums can be found right here (link opens in a new window) if you're interested.


UPDATE: 04-29-05
SureFire has confirmed that all current SureFire lights should be waterproof to about 33 feet/10 meters. Some evaluations were posted before Surefire made the affirmation that their lights were watertight to 1 atmosphere depth. Any new SureFire lights you purchase now should be considered waterproof to 33' (10M).


PROS:



CONS:



    MANUFACTURER: SureFire
    PRODUCT TYPE: Special edition handheld flashlight
    LAMP TYPE: Incandescent, SureFire P60 module
    No. OF LAMPS: 1
    BEAM TYPE: Slightly ovoid spot
    SWITCH TYPE: Push tailcap momentary/twist tailcap continuous
    BEZEL: Lamp assembly protected by acrylic window
    BATTERY: 2 ea. CR123A lithium cells
    CURRENT CONSUMPTION: 1.11 amps
    WATER RESISTANT: Yes
    SUBMERSIBLE: Unknown
    ACCESSORIES: Probably a set of SureFire CR123A cells
    WARRANTY: Lifetime, as far as I know

    PRODUCT RATING:

    Unrated because this is a very special, limited edition flashlight.
    Somebody with an ordinary SureFire Nitrolon G2 will have to test one.





SureFire Nitrolon G2 CPF-50 Edition * www.surefire.com/cgi-bin/main/co_disp/displ/prrfnbr/878/sesent/00






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