Opinions on ThruNite Drop in engine

**espnazi** · 04-13-11, 00:51

If you are truly that worried about heat just wrap the drop in a little copper or tin foil so that it has better heat transfer to the host.

**uwe1** · 04-13-11, 12:09

Originally Posted by aflin

I'm currently running a 6P LED on my AR. I was doing some night shooting the other night and realized 80 lumens wasn't quite enough to illuminate targets at 50 yards (may be my eyes just suck).So now I'm looking for a new bulb. I recently came across the ThruNite 460 bulb.

I was wondering if anybody has any experience with these? Are they reliable and durable? I figured if nobody has any experience, I will take the plunge. Heck its only $25.

Note* 80 Lumens is plenty indoors. For outdoor use, I plan on dropping the new bulb in.

OR I can use this Malkoff M60 235 lumens

Your eyes are fine. 80 lumens does suck for 50 yards. During the night shoot at a EAG Carbine 2 class, everyone with the 80 lumen G2/6P LED realized they needed more. I ran a Malkoff M61 in my G2LED. It was awesome and lit the whole range up.

**aflin** · 04-13-11, 15:28

Originally Posted by espnazi

If you are truly that worried about heat just wrap the drop in a little copper or tin foil so that it has better heat transfer to the host.

Sounds like the heat isn't really something to worry about? I can see how heat displacement would be a consideration in a G2 chasis due to the polymer. A 6P doesn't seem like it would be much of an issue.

Would this statement be safe to say?? Thanks again for all the input gentlemen!

**CLHC** · 04-14-11, 01:12

I have three (3) of the Malkoff Devices that I use in my SF.6Z, SF.6P, and SF.M2. Two are the M61W with one being the M60F.

Very satisfied with these drop-in LED LEs!

**espnazi** · 04-14-11, 11:41

Originally Posted by aflin

Sounds like the heat isn't really something to worry about? I can see how heat displacement would be a consideration in a G2 chasis due to the polymer. A 6P doesn't seem like it would be much of an issue.

Would this statement be safe to say?? Thanks again for all the input gentlemen!

It depends how long you run it and it what mode. Just for goof measure if the drop in doesnt fir snuggly I add a little copper tape or aluminum foil. I only do this in XML drop-ins.

**camoman** · 12-28-11, 17:15

Originally Posted by joffe

I would not use one in a weapon light. I highly doubt these are potted with thermal epoxy. The epoxy keeps everything snug and minimizes vibration - without it the electronics and wiring are prone to shaking themselves to pieces.

If you want something cheaper than the Malkoff, Dave at CPF builds bespoke P60 modules

http://www.candlepowerforums.com/vb/...s-%28part-8%29

Specify thermal potting, and also mention that the dropin will be going in a weapon light, and he'll take care of you.

An XM-L dropin with potting would run you $45. You also have multiple driver level choices, for a weapon light I'd recommend a single-level module. You can also choose between a smooth reflector for longer reach, and an orange-peel pattern reflector for a 'nicer'/'smoother' beam.

The thing about that is, even if it isn't potted from the factory...you can do it yourself easily....and cheap. (I just potted a Solarforce R5 XPG) I paid like $17 for the Drop in at Lighthound...and $9 for the Arctic Alumini thermal epoxy at Newegg. I desolderd the driver, and used a syringe to inject the epoxy into the pill, and pack all the electronic, then I re-soldered the driver. It seriously took me like 45min, and at least I seem to get some satisfaction out of taking a cheap piece of junk and making it a gem.

**ra2bach** · 01-03-12, 15:21

will any of these drop-ins work in the new X-series Surefire lights like the G2X or 6PX?

**Denali** · 01-03-12, 17:26

Originally Posted by aflin

I'm currently running a 6P LED on my AR. I was doing some night shooting the other night and realized 80 lumens wasn't quite enough to illuminate targets at 50 yards (may be my eyes just suck#.So now I'm looking for a new bulb. I recently came across the ThruNite 460 bulb.

I was wondering if anybody has any experience with these? Are they reliable and durable? I figured if nobody has any experience, I will take the plunge. Heck its only $25.

Note* 80 Lumens is plenty indoors. For outdoor use, I plan on dropping the new bulb in.

OR I can use this Malkoff M60 235 lumens

I run the same 6P on this Colt's 6940, it's lamp was replaced long ago with the "Thrunite" XML, performance has been superb, especially as I now run it with RCR123's which is verboten in the original Surefire lamp assembly...for the money you really can't go wrong, bought mine#three of them#from Lighthound...