Video*** 2C Mag MC-E from Nailbender = 610 out the front lumens...

bigchelis

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Hi all,


http://www.youtube.com/watch?v=-iovLqE3XtE

I just got a 2C Mag MC-E from Nailbender. In the past I purchased 5 P7 D size Mags from him. Why so many? Maily for MrGman to test, but co-workers, friends, and family got some of them. At the end I had none for me.

I wanted something thin easy to grip and to have as close to 2 hours of runtime. I wanted to use AW black C cells and AW IMR C cells. My 1D P7 lights were all direct drive and while the firt 5 minutes while using li-on cells were 600~710 lumens I know the lumens would keep dropping, and I would get 45 or so minutes at 2.8A with AW 18650 cells.

So, I knew I wanted a regulated quad emitter for flood and 600 plus lumens for some throw. I also wanted 2~3 li-on cell capable. Well I got everything I wanted and my new 2C MC-E is regulated at full power and wired 2S2P. It made 610 out the front lumens ( using MrGman built and calibrated IS Sphere now owned by Nailbender) and runs at 2.8A fully regulated with 1.3A at the tail with 2 li-on cells.

Here it goes....and the beamshots come later with a video from Me and MrGman to follow.

Here it is compared to a 1C Mag cut super short for IMR C cells as opposed to AW li-on C cells which are slightly longer. There is a 2 18650 Solarforce and Malkoff E-series bezel that makes all your E-series lights P60 compatible with all P60 drop-ins:twothumbs
P8260061.jpg



P8260069.jpg



P8260067.jpg



Here is both rear shots of the 1C hosts and 2C hosts that had to get bored to allow the thicker IMR C cells to fit.
P8260070.jpg



P8260074.jpg


While using AW black 3300mAh cells I use the shorter spring tail, but with the IMR C cells I use the stock tail and spring. Please note that you have to dremel out the anodizing from the tail cap to push in the stock spring and still have good connectivity or electrical contact.
P8260071.jpg
 
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OceanView

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Nice. Can't wait for the movie...err, video! I have one of Nailbender's early MC-E builds, in a Mag 2D, with a 5A tint emitter. Still gets used on most nights for puttering around just outside the house in the dark (love that we're not stuck with just cool white tints anymore!)

What driver are you using?
 

bigchelis

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Nice. Can't wait for the movie...err, video! I have one of Nailbender's early MC-E builds, in a Mag 2D, with a 5A tint emitter. Still gets used on most nights for puttering around just outside the house in the dark (love that we're not stuck with just cool white tints anymore!)

What driver are you using?


Nailbender used a 1.4A driver from KD.
 

bigchelis

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Nice build! I'm working on a budget 2D [email protected] conversion so its good to see other builds, keeps me pushing forward.

^G


Just an FYI:

With a 2D heatsink you will get about 100 more out the front lumens.:D, but I didn't want the thicker 1D size hosts anymore, which is why I went ahead with the C size. To me it is a good compromise. Plus, being regulated at 1.4A, but wired 2S2P the light doesn't get warm untill about 40 minutes.

Good luck on your build, but if I were you I would use 2 IMR C cells in that 2D hosts. Check with some builders in the custom section and for under $20 bucks I am sure you could have it cut down to a 2C size.

Regards,
bigC
 

waddup

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

the longer im into lights, the more im leaning towards harder to lose lights (AAA lights are just too easy to lose/misplace forever) longer runtimes (sure 110 otf lumens is cool for an AAA light, but 9 minutes runtime is useless for almost anything) and multiple levels (low-med-high) lithium 2C, 2D, 3x18500 size lights are where im at. hard to lose easy enough to carry and provide a lot of light for a long time.

2C mc-e is something id buy.

theres a new 2C work light coming out (lumapower mentor) somewhere here ill be after as well
 

Justin Case

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Just an FYI:

With a 2D heatsink you will get about 100 more out the front lumens.:D, but I didn't want the thicker 1D size hosts anymore, which is why I went ahead with the C size. To me it is a good compromise. Plus, being regulated at 1.4A, but wired 2S2P the light doesn't get warm untill about 40 minutes.

I don't see why 1.4A drive and 2S2P is anything special in terms of keeping the light cool. Whether it is 2.8A/4P, 0.7A/4S, or 1.4A/2S2P, it's all the same power draw by the MC-E-- about 10W.

It's my understanding that nailbender correctly separates the driver heat sinking from the LED heat sinking. That is one factor that probably helps to keep the light cooler.

I personally would not push that modified KD ProductID=1640 driver (I assume that's the driver used) above 12V. In my testing of that driver, the regulation showed some odd behavior at that Vin level. Thus, IMO, 3xLi-ion is iffy, at least initially for cells hot off the charger.

Regarding throw, I can get a hot spot reading of 19,000 lux at 1 meter using a Seoul P4 and the stock smooth Mag reflector. If I use a P7 run at full power, I can slightly exceed the P4's hot spot throw. But it takes 10W vs 3.4W to do it. What you get for your 10W is a very bright, large spill in addition to a good hot spot.
 
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bigchelis

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

I just finished running it for 2 hours and 20 minutes with the AW li-on C cells and it was still bright and wouldn't give up.


The current at the tail with fresh IMR C cells is 1.1A. This makes it 8 to 9 watts under load.


I don't know what if anything is special, but any light that small that can make 600 out the front with 8 watts under load gets an :twothumbs

MrGman can probably elaborate more on how good the build is...He wanted to take it from me, but I said no way Jose.
 
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Justin Case

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

I just finished running it for 2 hours and 20 minutes with the AW li-on C cells and it was still bright and wouldn't give up.


The current at the tail with fresh IMR C cells is 1.1A. This makes it 8 to 9 watts under load.

I don't know what if anything is special, but any light that small that can make 600 out the front with 8 watts under load gets an :twothumbs

MrGman can probably elaborate more on how good the build is...He wanted to take it from me, but I said no way Jose.

That tail current draw seems low.

Some possible reasons include:

- DMM interaction with the current measurement
- an exceptionally low Vf MC-E
- tail current measurement is for the initial turn-on rather than a steady-state value
- not running quite at full 1.4A drive current output

I'd check the tail current draw with another DMM. What DMM brand/model did you use?

Assuming a very good driver efficiency of 95% and a Vbatt under load of 7.8V, the LED is getting about 8.1W. The Cree Vf spec at 1.4A drive for 2S2P is 6.9V. At 8.1W, your Vf (assuming 1.4A drive) is only 5.8V. That seems unrealistically low. Now if Vbatt is 8.4V (no voltage sag, which would be the case at initial turn-on), then you could be delivering about 8.8W (instantaneous) to the LED. And if we again assume that you are sending 1.4A drive to the 2S2P MC-E, that corresponds to a Vf of about 6.3V, which is in the ballpark at least (I've measured Vf~6.3V for a 2S2P MC-E driven at 600mA per core). However, even the IMRs are going to have some voltage sag. If they sag to 4V per cell, then the calculated Vf at 1.4A drive is 6.0V, which again seems unrealistically low.

I could believe that your driver is sending closer to 1.2A drive current (600mA per core).

I would hook up a DMM and measure Vf and If.

I would also try running the light at higher Vin, say 10V, to make sure that you aren't running into voltage headroom issues. I wouldn't expect this to be the case, but who knows. I'd check to see whether or not the current draw from a 10V source scales in proportion to the draw with 2xIMR-C.
 

waddup

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

if it works...... dont fix it.
 

Justin Case

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Nothing I suggested involves "fixing" anything. They are all diagnostics. And except for measuring If, none of the diagnostics disturb anything. And if you have a DC clamp-on meter, you can measure If without desoldering anything as well.
 

^Gurthang

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Big C,

Thanks for the info and encouragement. I'm still REALLY wet behind the ears about this stuff. Just figured out the 2S2P for MC-E emitters. [I'm sticking w/ single die emitter to start...]

I'm keeping the 2D host stock for future changes [2D Li-Ion, Li-PO etc.] plus its a "beater". Plus I'm learning to use a lathe so I'd like the chance to learn boring, reaming & threading [being incredibly cheap helps too].

^G
 

MrGman

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

This is a really nice light, and yes I wanted to keep it. The 2 C maglite size is very nice just a little bit bigger and stockier than the Malkoff MD4 Wildcat. The beam is narrower and more of a green tint. The Wildcat has a wider yet smoother beam. Output was real stable. Of all the P7's that I have seen so far, this is one that I would like to have because its got a good balance of size, brightness runtime and ease of use with the mid body button.

I would say the Malkoff Wildcat still has the better beam but I always like to have some lights with mid body buttons on a smooth cylindrical tube.

Big C and I will make a video hopefully next Monday night comparing this to the Wildcat, Solarforce L900 and the Modoo Triple R2.
 

supasizefries

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Oh cool, I'd like to see the comparison compared to the triple R2! :popcorn:
 

bigchelis

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Re: My New 2C Mag MC-E from Nailbender = 610 out the front lumens...

Oh cool, I'd like to see the comparison compared to the triple R2! :popcorn:


The tripple Moddoo drop-in did 560 out the front in MrGmans work IS Sphere. The beam is almost all flood, but due to the 500 plus lumens it has plenty of throw.

Here is the video comparing the Nailbender 2C MC-E, MD4, Solarforce L900, and Moddoo Tripple R2. All the test subjects are around 600ish lumens plus or minus 50 lumens.:D
http://www.youtube.com/watch?v=-iovLqE3XtE
 

MrGman

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Does it still have the focus function?


the head screws in and out somewhat but from what I could see very little change in the beam pattern. So don't count it having a true focus adjust. But it has a good beam just the way it is. I believe and big C while chime in here, that Nailbender is setting it up to be pretty much spot on with the head screwed all the way in when he sets up the position of the LED in its heatsink. Based on what I have seen when I played with it. Its a very good overall light if you like that mid body button format which I always will. Not to big and not too small. I have the belt ring all ready for it. :D
 

recDNA

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the head screws in and out somewhat but from what I could see very little change in the beam pattern. So don't count it having a true focus adjust. But it has a good beam just the way it is. I believe and big C while chime in here, that Nailbender is setting it up to be pretty much spot on with the head screwed all the way in when he sets up the position of the LED in its heatsink. Based on what I have seen when I played with it. Its a very good overall light if you like that mid body button format which I always will. Not to big and not too small. I have the belt ring all ready for it. :D


Oh I like it...but as you may remember I'm a flood fan (I'd love a Malkoff but a little too pricey)...so if I could get that throw WITH a flood I'd be doomed to buy one. Discovering this website has cost me more money then I'd care to admit. Thanks for the great video and doing the lumen readings.
 

bigchelis

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Oh I like it...but as you may remember I'm a flood fan (I'd love a Malkoff but a little too pricey)...so if I could get that throw WITH a flood I'd be doomed to buy one. Discovering this website has cost me more money then I'd care to admit. Thanks for the great video and doing the lumen readings.


If you want a Malkoff Drop-in P7 for D size Maglights it will have almost all flood, but throw will be provided due to the 700 plus lumens.

This site is leaving a negative balance on my bank account:mecry:

lovecpf
 
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