Boy am I lost! Putting together a decent tac light...

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Newly Enlightened
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Mar 21, 2009
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Well, kinda. It's my first post here, so I'm hoping that I don't make myself looks like too much of a noob...but I inevitably will at some point.

Anyway, I carry a SF G2 every day at work (I'm a patrol sergeant and firearms instructor for a local emergency services agency), and initially set out to find an upgrade that would give me the perfect balance of flood and throw that everyone seems to covet. Unfortunately, I didn't find this forum until I had already wasted my money on a cheap, overrated LED module from ebay (Alpha USA G8 or something like that) that was rated at 390 lumens. 390 lumens? When I saw that I was very excited...I thought that I'd be holding the sun in my hands and blow my coworkers' Pelican 7060s away.

Not the case. At all. Much brighter than the stock P60 bulb...but only putting out 100 lumens at best. A far cry from the 390 lumens advertised.

So then I come upon CPF, lurk a while, and learn some stuff. I've been slowly but surely going e-bay crazy buying decent parts for a good tactical light build up. I just found a great deal on an SolarForce L2 body complete sans bulb, ready for a drop-in. Picked it up for $15 shipped. I ordered an extension unit last week for $9 shipped so I can add a 3rd CR123A battery (basically I want to push that POS Alpha USA LED to see if it can do any better than what it's currently putting out, but it certainly wont be a permanent fixture in the new light).

Anyway, I need to pick an LED module to run in this new tactical light, and I've been seriously considering the Malkoff M60. I've read nothing but excellent things about it. But, I've also been reading alot about 18650 batteries, which appeals to me since having rechargeable batteries is a must in my line of work. However, this is where I get a little confused.

[noobness]

From what I gather, 18650s are rechargable Li/Ion batteries, right?

From all of the pictures I've seen, they look like they are the size of two CR123A batteries, so do they just drop in like the CR123As, or do I to run them with an extender or something like that?

And, since I'd be running the 18650, I'd need to use a M30 drop-in instead of an M60, right?

Can you guys point me toward good brands of batteries and chargers? The last thing I want is to lay down the $55 on a Malkoff then feed it crappy batteries, or good batteries with a poor charge.

[/noobness]

Pardon the obviously very common questions...I've read the wiki a little and browsed several posts, but most of the conversaitions on here get pretty technical pretty quickly, and it's rather hard to decipher for someone not in-the-know. :confused: I'll get there eventually, I just need a little break-in time. :D

Also, I tend to write introductory novels when I get onto a new forum, so sorry about the long first post. Thanks in advance ladies and gents...looks like quite a knowledgable group here. Looking forward to becoming a part of it.
 
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1x 18650 will replace 2x CR123 batteries. You have to have a body that is bored wide enough for the 18650 battery though, they don't all work. Surefire 6P's can be bored for 18650. Solar Force and other manufacturers produce lights that work with 18650's.

If you don't want to bore out an existing light or buy a new one you can buy a 17670 instead. This will also replace 2x CR123 but is a little thinner than an 18650.

AW makes some of the best protected Li-Ion batteries and they aren't expensive.

Two popular and affordable chargers would be the Ultrafire WF-139 and the Pila IBC. The Pila IBC is a nicer charger but is more expensive. I own both and like to use the IBC at home while I consider WF-139 more expendable so it can come with on trips and I don't have to worry too much about breaking or losing it.

An M60 will run on a single 18650/17670 but an M30 will run a little better on a single 18650 or 17670. The voltage of 2x CR123 is a bit much for the M30. If you want to be able to use the rechargeables and primaries you should consider an M60.
 
Welcome to CPF.

Seriously, why waste time, effort trying to reinvent the wheel for a "tac light"?

When there is a company, Surefire, that hear what LEO community want in a flashlight. Invest in R&D to create unqiue/cool flashlight designs, pioneer the use of CR123 cell and build reliable flashlights that meet those needs.

I would said just get a SF M3 or M4. Support US economy and a company that put in a honest day work with your wallet.

If you prefer to DIY your own light, you may get the following components as suggested by other users.
a)18650 body
b)Malkoff M60
c)18650 batteries
d)Pila IBC charger

As you already found out, most ebay stuff are junks from China. Not trying to be mean or nasty, just hate seeing people wasting money on junks.

The final decision is yours. Cheers
 
Seriously, why waste time, effort trying to reinvent the wheel for a "tac light"?

When there is a company, Surefire, that hear what LEO community want in a flashlight.

If you want to know why just compare a P60L to an M60L or M60LL sometime. I really don't think anybody is clamoring for lower output and less runtime. SureFires are good lights in stock form but you can see serious gains with only a few simple, relatively inexpensive mods.

Speaking of hosts the Malkoff MD2 looks like it will be an amazing M60 host.
 
If you want to know why just compare a P60L to an M60L or M60LL sometime. I really don't think anybody is clamoring for lower output and less runtime. SureFires are good lights in stock form but you can see serious gains with only a few simple, relatively inexpensive mods.

Therein lies my reasoning for wanting to put together my own light. I spent several years in the air force as a machinist and welder, so tinkering and building stuff is in my blood. I'm actually re-enlisting in a couple of weeks, but cross training into Security Forces...but that's neither here nor there.

Thank you all for the responses, that kind of info was exactly what I'm looking for. As for the junky LEDs...I've learned my lesson with that one. Never again. I can't believe that I paid as much as I did for it, too...for $20 more I could have picked up an M30 or M60. I'm quite pissed about that. But, live and learn. I sure won't make that mistake twice.
 
So based on what I'm reading, I can run an M60 on either CR123s or the 17670, whereas with the M30 I'd be better off going with the 17670 rechargables only? Sounds like the M60 is the way to go on this one, just in case the rechargable dies - I can just pop in a couple CR123s and be good to go again.

What kind of output will I see with a 17670 as opposed to 2xCR123? Is there any discernable difference?

One other thing that I've been reading on the Malkoff site that I'm wondering about: With LEDs, what is the meaning of "regulation" versus "direct drive"?
 
A LED drop-in won't like the polymer body of the G2 very much since very little of the heat will be transfered from the drop-in. There are a few lower powered ones that could work though(Malkoff M60L and LL).

A 18650 battery is 18mm wide (1st 2 #s) and 65mm long(2nd 2 #s). A CR123 is 16mm wide and 34mm long. You could have gotten the Solarforce with a 18650 compatible body if you wanted to use 18650 batteries.

:welcome:
 
:welcome:

You won't be dissapointed with the Malkoff. I have a M60 & M60L. There is no hype with these drop-in's... only light... and a lot of it. Good hotspot and spill. Not to mention tank like construction:twothumbs I've tried other drop-in's and the only one I've used that comes close is the BOG super premium. I would still take the Malkoff if I could only have one though.
 
WRX, good to hear!

Gunner, thats kinda why I decided on ordering the Solarforce L2 - it will be the host for the drop in. I just didn't realize that the 18650 wouldn't fit it. Oh well, the body was only $15 shipped to my door, so it's not a huge loss if I decide to go with a body capable of housing the 18650.

Is there a big advantage of using a 18650 over a 17670?
 
It's hard to tell just by looking, but it looks like it has the 18650 battery tube to me, assuming the ebay listing is accurate.
 
WRX, good to hear!

Gunner, thats kinda why I decided on ordering the Solarforce L2 - it will be the host for the drop in. I just didn't realize that the 18650 wouldn't fit it. Oh well, the body was only $15 shipped to my door, so it's not a huge loss if I decide to go with a body capable of housing the 18650.

Is there a big advantage of using a 18650 over a 17670?

A roughly 40% jump in capacity.
 
Could I pint your attention to the switch function?

Have you gotten the Solarforce body yet? the switch is a reverse clickie (works opposite to the surefire). Hardly a tactical way of function...

Thre is a forward click (works as a maglite switch) Solarforce option though...
 
Could I pint your attention to the switch function?

Have you gotten the Solarforce body yet? the switch is a reverse clickie (works opposite to the surefire). Hardly a tactical way of function...

Thre is a forward click (works as a maglite switch) Solarforce option though...

Hrm. Thats a little discouraging, but really only a minor setback. I have a pressure pad tailcap switch on the way, so perhaps this could become a weapon mounted light for my AR15 and I can keep the G2 for duty use...

I'll find something to do with all of it. :thumbsup:
 
If you have the money I would highly recommend buying a Surefire like the C2 and Malkoff. Thats probably one of the best combinations around. Otherwise your Solarforce is a good choice.
As far as the switch goes they do sell forward clicly switches for that Solarforce. You might want to check in the marketplace and see if you can fine one. The Solarforce and the Surefire 6P are compatible from what I have seen.
As far as batteries go I would get one from AW. I've noticed that the protection circuit on the Ultrafires and Trustfires tend to go bad and they quit working for seemingly no reason. That has not happened with my AW cells.
I have used a number of the WF-139 chargers for awhile now with no problems.
 
I'm all for tinkering and customizing - that said, do you have any job specs beyond a "tactical light?"

On a forum like this, that's like asking the NRA - "can you recommend a gun?"

In your body search, don't forget to look at Lighthound's offering of Five Mega Flashlight Bodies.

At a certain point, you need to ask yourself if you're customizing because a product doesn't exist to fit your need or you want an expression piece.

Neither answer is wrong, but it will help nudge your selections one way or the other.

-Trevor
 
Haha, thats a very good point Trevor! I suppose my initial post was a little cryptic in the sense that I know what I want in my head, I just didn't do a very good job of laying it out.

I suppose that this light will fill a certain need, as well as having just a touch of personalization. Obviously buying a complete Solarforce body minus the bulb isn't exactly "ground up" custom, but its different than your standard 6P or G2 that alot of my coworkers have, and will certainly be brighter with the Malkoff installed. Additionally it will run off rechargeable cells, so that adds another leg up. As for specifics, here's what I'm looking for:

1. Relatively small size. I have a ITI M6 weaponlight mounted on my Sig, so I use that for building searches and whatnot. However, pulling my gun out just to use the flashlight is NOT a practical or politically safe method of lighting up an area. :crackup:So, thats where the G2 comes in.

2. Bright beam with good throw and good spill. I work in a very rural community in unincorporated Douglas County, and while not technically a "mountainous" area, there is approximately 800 feet of elevation difference from the south end to the summit on the north side. There are some large wooded areas, huge areas of open space, and some exceedingly long driveways leading up to some very large homes. I need a light that will throw a decent beam out a ways (100ft or so), as well as one that has enough spill for safe room clearing/searching when the M6 isn't being used. This is why I've pretty much decided on the Malkoff M60 - it exceeds all of my requirements. I'm going to swing shift starting next wednesday (2pm-midnight) so thats an even greater reason for having a good light at the ready.

3. Rechargeable batteries. I use my lights alot, and consequently they eat a ton of CR123s. I need good run time combined with good output, so the AW 18650 setup sounds like a winner to me. If I can get 1.5-2 hours of run time out of a single charge, that would ideal. If it runs longer, I won't complain.

Other than that, I'll be replacing the reverse-clicky tailcap on the Solarforce with a momentary switch, and that should make me happy for a while. I know those are very basic requirements compared to what some of you guys look at when putting together a flashlight, but I'm keeping things simple and fucntional for this one.

When I get further into this (and I can definitely see this becoming ANOTHER one of my extremely addictive hobbies), I will seriously consider one of those FiveMega bodies as the basis for the build. They look very well made.
 
so what are your options on a forward clicky?

1. Solarforce form ebay or lighthound
2. Solarfoce from Kaidomain (it is a forward/reverse clickie combination) without a lockout feature
3. a surefire tailcap (I am currently in searchy for one too)
4. an option i will be exploring the next days. a mcclicky switch on the existing tailcap

BTW can anyone that has received a solarforce flashlight recently tell me if the innards are annodized or not?
My old one is not and that does not make it lock-out and that is bad regarding accidental light-ons....
 
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