[GUIDE] Mag623 Build w/pics

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I got a PM from Lux suggesting I use his "18.0V (15 cells) $75" pack for the 623 build I'm doing. I'm doing it in a Tri-bore 3D with AW's soft start, by your estimation, wouldn't this pack be a little too much? I guess with the soft start and low I could discharge the pack some though...

And as for KD's 3AA to 1D, NO. I just had a set melt in my ROP HI.
 
Swagg said:
I got a PM from Lux suggesting I use his "18.0V (15 cells) $75" pack for the 623 build I'm doing. I'm doing it in a Tri-bore 3D with AW's soft start, by your estimation, wouldn't this pack be a little too much? I guess with the soft start and low I could discharge the pack some though...

And as for KD's 3AA to 1D, NO. I just had a set melt in my ROP HI.
Click to expand...

Please be accurate if you are representing something we discussed in PM's. I did not say that about using a 15 cell pack with a 623. Luckily, I save copies of PM's and here is what I actually said, with specific reference in red, bold:
================================================================================
From : LuxLuthor
To : Swagg
Date : 2008-05-06 21:52
Title : Re: Run times
--------------------------------------------------------------------------------
Remember those charts are for a very low resistance setup coming from power supply and using thick wire.

The average Mag setup and batteries probably has a resistance of at least 250 (or higher) milliohms, so with a bulb like the 64623 which uses 10.5 Amps, that resistance gives a drop in voltage of 2.6Volts (using Ohms Law)
Ohms Law: V=IR

V (drop) = 10.5 Amps x 0.25 Ohms
​
So generally you are best using a 13 cell pack which has a range of: 15.6V to 18.85V (full charge of 1.45V per cell....which drops fast under demand), and with the drop from resistance (in comparison to my chart) will be an actual delivered voltage of 13V to 16.25V

Swagg said:
ok, last question. I noticed in your bulb testing that the 64623 flashed at 16.9V. I am using a 3D with an AW soft start and multi-level switch, so the question is will your 16.8V pack be too much for the 64623? If I'm going to build a superlight I might as well push it to the max. I also read that lights are more efficient when driven harder so will the runtimes change from what you already stated with the higher pack? Thanks for your help, I will be buying two of your packs this month once I decide the exact builds I want.
Click to expand...
 
LuxLuthor said:
Please be accurate if you are representing something we discussed in PM's. I did not say that about using a 15 cell pack with a 623. Luckily, I save copies of PM's and here is what I actually said, with specific reference in red, bold:
================================================================================
From : LuxLuthor
To : Swagg
Date : 2008-05-06 21:52
Title : Re: Run times
--------------------------------------------------------------------------------
Remember those charts are for a very low resistance setup coming from power supply and using thick wire.

The average Mag setup and batteries probably has a resistance of at least 250 (or higher) milliohms, so with a bulb like the 64623 which uses 10.5 Amps, that resistance gives a drop in voltage of 2.6Volts (using Ohms Law)
Ohms Law: V=IR

V (drop) = 10.5 Amps x 0.25 Ohms
​
So generally you are best using a 13 cell pack which has a range of: 15.6V to 18.85V (full charge of 1.45V per cell....which drops fast under demand), and with the drop from resistance (in comparison to my chart) will be an actual delivered voltage of 13V to 16.25V

​
Click to expand...


Sorry about that, I overlooked the "13 cell pack"...I was recalling from memory and remembered the numbers but obviously not all of them. Again, sorry and I did not mean to misrepresent you just a simple mistake.
 
i'd like to ask, is this essentially a "torch"?

it uses the same bulb, and i assumes overdrives it just as much?

Crenshaw
 
One more cell than the original torch, so overdriven just a touch more.

I have had one ( more now ) for well over a year, and its a sweet light.
 
Raoul_Duke said:
One more cell than the original torch, so overdriven just a touch more.

I have had one ( more now ) for well over a year, and its a sweet light.
Click to expand...

sweet...looks like ill have to start accumalating parts again.anyone wanna sell me a tri-bore 2d mag next month? :ooo:

Crenshaw
 
Looks like 299792458m/s hasn't been around for quite a while, anyone knows? I'm waiting for the update of this guide.
 
Well I have a tri-bore Mag 3D that I've got this build in, the only thing I need now is a LuxLuthor battery pack. I was confused on the battery stuff but once I figure out the right pack for the 3D size I'll be ready to roll. I just can't wait to fire this thing up for the first time! And with the AW multi mode this should end up being a useful light.
 
I am keen on building one of these Mag623 things - I have no need for one and they aren't particularly practical for normal torch uses, but how is THAT relevant?

Anyway I have everything I need on order, except the bulb itself . . . oooh, and the necessary batteries. I want to run it off 4 x Li-ion batteries in my 4D Maglite. I could get 4 x IMR 18650 cells which would be running just over 6C for their amperage, AW says they are good for 10C continuous. I am hopping to find a better power source though - I have asked AW if he can make some IMR 32400 cells, hopefully something like that would only need to output at 3C giving close to 20 minutes run time - I can live with that. If AW ends up doing a run of IMR 32400 then I will set up a 2.5D Maglite up as a Mag623. I have already ordered a couple of 34mm extension tubes from fivemega to allow me to lengthen one or 2 of my Maglites as required.

I see the first post mentions a 13 cell power pack (13 x 1.2=15.6V), I am looking at 4 x 3.7V = 14.8. Hopefully this means I will get a longer life out of each bulb, but a pretty good output. Lux Luthor's destructive tests suggest I will get 60+ hours out of a bulb if I keep it under 15V - if I only run 15 minutes before recharging batteries then that is 240 runs to a bulb. Are you guys running Mag623s getting anything like that life out of the bulbs?

Can someone quickly post a link here to the current best source for these bulbs please?
 
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