EO-6 in Surefire G2?

[Alteran]

I'm just wondering a few things about putting a Lumens Factory EO-6 in a G2. I know plastic lights are worse at transmitting heat, so could this be a problem? Also, is this really 200 lumens for 40 minutes off 2 primary CR123as? How is this possible, if the P61 is just 120 lumens for 20 minutes? How long would this stay at top brightness? What could I expect as far as bulb life goes?

I'm sorry to bother you with so many questions, but I am very new to incandescents, and thought I might as well get a good one.

 

[marcdilnutt]

The lumens factory are bulb lumens, whereas surefire use torch lumens. Meaning that about 60 percent of the stated lumens will be lost due to reflector and lens, while with surefire you know that these losses have already been accounted for and what they say as output will actually come out the front of the light.

 

[Alteran]

Oh, so its more like 90 lumens? That's not actually too impressive compared to my LED lights, I may go back to my original idea of getting the Streamlight TL-3. Or maybe that lighthound kit that lets a mini-mag use TL-3 bulbs, does anyone know how well that works?

 

[Flash007]

I've read in some posts that bulb lumens is 2/3 of torch lumens.

Thus, real output about ~133 lumens with EO-6.
Let say 120 lumens. Not bad.
But you must think about heat. G2 is plastic lens (polycarbonate or Lexan ?), and you have the risk of melting the lens.

Cree/Seoul and generally LED's are really great alternative for incandescent, but don't forget color rendition outdoor is not the same.

For me, LED's are excellent for indoor use, but for outdoor, when you need throw @ longer distance, actually there is nothing better than incandescent, or HID, but I don't have experience with HID flashlights.

For closer use outdoor however, LED's are OK even outdoor.

 

[marcdilnutt]

Also i would be wary of thermal transfer with a G2, it doesnt give you much opportunity to get rid of the heat. Try one with 120 lumens, you will like it!

 

[Alteran]

Does anyone ahve the EO-6? Is it a very throwy light? Because I have plenty of LED lights that are perfectly bright for close up work and general walking around at night. My main needs in an incandescent are throw/very high power. If the EO-6 can get even 120 lumens for 40 minutes, I think that would be very good, and it is advertised as working with the G2. Not only am I not in the marker for an LED drop in, but they tend to need good heatsinking, something which plastic is not great for. Any opinions of the TL-3 or TL-3 bulb kit for mini-mags?

 

[Flash007]

I had the EO-4 (3,7V 190 lumens).
I say "I had" because last night @ work my bulb blew up. Premature dead after only 1 hour use.
I've sent a mail to lumens factory and they will ship another lamp assembly.
Great service !

The beam of the EO-4 is a thrower, but you have also sidespill. I like it.
The EO-4 is bright, and white.

 

[Alteran]

I think I will go with the EO-6, and maybe another 6 series bulb as well. Are there any heat concernes with the G2? Lumens Factory says it's compatible, but it might just be size.

 

[Flash007]

Heat will be maybe a problem in the G2.
It's better to send a mail @ Lumens Factory and ask the question.

For compatibility with Surefire, I have used the EO-4 (current draw 2,35A @ 3,7V) in my Surefire M2 + 17670 with no problem.
Same thing with my HO-9 + M2 + 2x AW RCR123 750mAh. No problem too.

HO-9 (current draw 1,55A @ 7,6V) is now in Wolf-Eyes 9AX (cells have more capacity = more runtime).

I have putted the Wolf-Eyes lamp 9V assembly in my Surefire M2 with 2x RCR123 from AW.
Beam is much more flood than the HO-9, vey very big hotspot, but also yellower than the Lumens Factory lamp assemblies I have.
Not a problem for me.
I am sure the current draw in W-E 200 lumens is lower than the HO-9 320 lumens.
But I don't know precisely the current draw.

 

[mdocod]

Surefire says the P61 is fine to use in the G2, and trust me on this, it makes a LOT more heat than the EO-6.

The best way to compare is as follows.

1. SF uses de-rated torch lumens, giving an average lumen output during the run on a set of cells.
2. LF uses bulb lumens at a voltage that is pretty close to fresh cells.
3. torch lumens are about 65% of bulb lumens.
4. LF lamps are designed to run the bulbs a little harder than SF bulbs, so they don't last quite as long, but they are usually whiter, and give more lumens/watt than a SF bulb.
5. Power consumption is your best starting point for comparing how bulbs compare, then apply rule "4" and you can come up with a pretty good estimate.
6. LF lamps are all pretty much geared for throw, so even with less overall light output, they seem to punch out there and light stuff up VERY well. The high color temp also makes them very desirable.

The EO-6 is rated 1.9A
the SF P61 draws more like 2.5A

after taking into consideration LFs slightly better efficiency, I would estimate the EO-6 to be about 90-110 SF lumens. But it will more than likely out-throw a P61.

Another way to look at this is that the P61 is like 220-250 LF lumens.

these are estimates, but I am pretty confident in these ranges.

 

[Alteran]

The EO-6 it is in that case! I'll have the P60 and LED lights for flood, and it looks like LF LAs are good for throw. Not only that, but the P61 costs more.

 

[Alteran]

Hey, does anyone know how this would throw compared to a d-mini or a TL-3?

 

[tofer50]

Heat will be maybe a problem in the G2.
It's better to send a mail @ Lumens Factory and ask the question.

For compatibility with Surefire, I have used the EO-4 (current draw 2,35A @ 3,7V) in my Surefire M2 + 17670 with no problem.
Same thing with my HO-9 + M2 + 2x AW RCR123 750mAh. No problem too.

HO-9 (current draw 1,55A @ 7,6V) is now in Wolf-Eyes 9AX (cells have more capacity = more runtime).

I have putted the Wolf-Eyes lamp 9V assembly in my Surefire M2 with 2x RCR123 from AW.
Beam is much more flood than the HO-9, vey very big hotspot, but also yellower than the Lumens Factory lamp assemblies I have.
Not a problem for me.
I am sure the current draw in W-E 200 lumens is lower than the HO-9 320 lumens.
But I don't know precisely the current draw.

Hey Flash007, can you run a P91 on a 9p with 2 17500 cells (AW 1000mah)? If so, what is your estimated runtime?

Same question with a SF G2, HO-4 lamp and one WE 169B rated at 1500 mAh?

 

[Flash007]

Hey Flash007, can you run a P91 on a 9p with 2 17500 cells (AW 1000mah)? If so, what is your estimated runtime?

Same question with a SF G2, HO-4 lamp and one WE 169B rated at 1500 mAh?

P91 draws too much current (~2,5A) to work safely with 2x17500 cells.
It's better to buy A19 extender and 2x17670 cells.
Size will a little longer off course.
18500 cells (1400-1500mAh, depends on manufacturer) will work with P91, but unfortunately Surefire bodies don't accept 18,5mm cells.

With P91 + A19 extender + 2x17670 cells (protected 1600mAh from AW), you can expect ~30 minutes runtime. Better than the ~20 minutes with standard 3xCR123 cells.
And in addition it's a rechargeable solution.

Use protected cells every time with high drain lamp assemblies like P91.

 

[Flash007]

Same question with a SF G2, HO-4 lamp and one WE 169B rated at 1500 mAh?

With HO-4 and 17670 (or 169B), no problem !
You can even use the EO-4 lamp with 17670.