E2L-CREE great runtime w/17670

[cbubu]

I was so happy of the runtime of the new Surefire E2L w/ primary batteries in real situation (see thread : http://www.candlepowerforums.com/vb/showthread.php?t=172159) that I wanted to see what would be the runtime w/ Li-Ion battery : here is the runtime (just great !!!) with an AW 17670 battery (bored body):

Just great !!! close to 5 hours of regulated output ! I like it
To all : have great time :wave:

 

[BBL]

Thanks for the effort. 5 hours regulated from one 17670 is excelent... maybe i should consider the E2L

Any ideas why the reulation curve is somewhat weird at 6:05?

 

[Bullzeyebill]

BBL, a slight movement of the light could cause that. Looks like cbubu is plotting by hand. cbubu did you use bounce or direct lux with lightmeter?

Bill

 

[Nathan]

Thanks for useful info. I'm currently using my KX2 on an Aleph 2x123 body since my E2L body doesn't take 17670's.

 

[cbubu]

@ BBL & Bullzeyebill : Yes, the curve is plotted by hand. The output is the direct lux value measured with a lightmeter (and my watch for time )
You're right, the output stopped to decrease just before 50% and staid nearly constant during 20 mn: for me a movement could explain a weird modification of the value but not such a flat slope. So, I just don't know but wondering if it is a coincidence that it happened at 50 %. If I had to advertise the E2L, would I take 6:05 or 6:30 hours as runtime at 50% ?
@ Nathan : the E2L body didn't take 17670 but with some patience and sand paper now it does

 

[Nathan]

cbubu,
Did you have to sand the entire length of the tube, or just the opening where there's a slight lip? If it's just a lip that needs to be removed, that should take just a few minutes with my trusty Dremel...

 

[cbubu]

@ Nathan,
I just had to sand the last third of the length (about a inch close to the tailcap) : in fact you don't have to sand a lot, your Dremel should do the work very well within a quarter of hour ;-) with the right tool. I used a kind of cylinder of sand paper w/ my maxicraft: I protected the thread and the ring w/ Scotch tape and coat the body w/ a wet sponge to evacuate the heat, 15 min after it was done
Regards

 

[Bullzeyebill]

cbubu, do that runtime again using bounce off ceiling in a small room. Place lightmeter about 2 feet or so from light at same level. Just don't change anything in room after starting test. Light needs to be close to meter so you can have some fairly high numbers to plot.

Bill

 

[cbubu]

@ Bullzeyebill : this is about the configuration I used (dark room, 1 meter - ~3 feet-), the only difference is direct but not bounce measure. I will do another measurement w/ another cell next week (I have to find more than 7 hours free ;-) ).
THANKS for your advices !
Regards,
Clem

 

[Nathan]

@ Nathan,
I just had to sand the last third of the length (about a inch close to the tailcap) : in fact you don't have to sand a lot, your Dremel should do the work very well within a quarter of hour ;-) with the right tool. I used a kind of cylinder of sand paper w/ my maxicraft: I protected the thread and the ring w/ Scotch tape and coat the body w/ a wet sponge to evacuate the heat, 15 min after it was done
Regards

Merci cbubu!

 

[jcompton]

This is exactly what I was looking for!!!!!!!!!! Thank You!!!

Was this a protected 17670, and was this the body, that came with the KX2 head, that you bored? I heard that the older style (w/KL1 head) body was wider and was wondering if that would need to be bored to run an AW protected 17670?

I just purchased the E2L-Cree and I am considering this exact same setup. Just looking to find out if boring is necessary or if picking up an older body will do the trick.

 

[adirondackdestroyer]

I have to say I am pretty impressed. Great regulation and runtime considering the high output. If only a 18650 would fit, then I would be seriously thinking about buying one.

 

[Bullzeyebill]

adirondackdestroyer, buy an after market 18650 body. Google 18650 body and see the choices out there.

Bill

 

[Chao]

or try lighthound, he has 18650 body for E head, KX2+18650 is very cool, you will get 9 hour regulation, this is same as using primary cells.

 

[cbubu]

This is exactly what I was looking for!!!!!!!!!! Thank You!!!

Was this a protected 17670, and was this the body, that came with the KX2 head, that you bored? I heard that the older style (w/KL1 head) body was wider and was wondering if that would need to be bored to run an AW protected 17670?

I just purchased the E2L-Cree and I am considering this exact same setup. Just looking to find out if boring is necessary or if picking up an older body will do the trick.

jcompton,
- Yes, the 17670 is protected (brand : AW) I removed the silver sticker (but not the black protection!). I have several 17670 and there is a slight difference of size for each of them.
- the body came w/ the KX2
- I have also a luxeon E2L (KL1) but the 17670 doesn't fit, the body has also to be bored. I bought it one year ago, it may be not enough old
The E2L-Cree is great w/ primary cells but I feel like a child with my flashlights ... playing with them in my apartment during the night :naughty: so I feel better to use rechargeable cells ...
Regards,

 

[jcompton]

jcompton,

The E2L-Cree is great w/ primary cells but I feel like a child with my flashlights ... playing with them in my apartment during the night :naughty: so I feel better to use rechargeable cells ...
Regards,

I am right there with you... I used the E2L-Cree for almost 2 hours of runtime w/primaries (on for 1 hour continuously) last night replacing the bathroom exhaust fan/light/heater unit at my parents house since I had to go up into the attic to replace old unit without ripping out sheetrock. I had to lay on my stomach on top of the rafters to get to the part of the attic that allowed me to reach the top of the fixture, and as luck would have it, the little light I did have was blocked by my body leaving me with much less then adequate lighting to complete the job. So I grabbed one of my dads old baseball caps, clipped on the E2L, and it worked great. I had more than enough light and it was always right where I wanted it. Not to mention that I hit the finish on the head a few times on the brackets (once pretty hard, and I thought I took a chunk out of the light) and today there are no marks or scratches at all... The finish on this light really holds up.

The worst part of all this (besides the fact that I have been using primaries, since I am waiting for my order from AW to arrive) is that I get home, take a shower, and soon come to the realization that I aparently running the light for 2 hours earlier was not enough for me... I go and pull out the E2L again along with the U2 and start flashing them around the house comparing the beams on each of the 6 settings to see which has better throw, flood, and is overall just brighter...:shrug:...:thinking:... I am officially convinced that "I Have A Problem..." :twothumbs