Dereelight CL1H Dropin for SF C2 Question

[herolet]

Judging on the specification and the pictures from the Surefire web site, I really like the C2 or M2. But I don't like the output and runtime of the incandescent bulb that comes with the light.

Does anyone have experience using a Dereelight CL1H Cree Q5 2SD/3SD (2.8v - 4.2V) + 18650 battery + Surefire C2/M2? Or do you think it's going to work without modifications?

I like the idea of having a high mode for the brightness and a very low mode for runtime. If it works, this would be my new favorite light. The C2/M2 just looks so elegant.

Thanks a lot.

 

[Mercaptan]

C2 won't fit an 18650 stock, it will fit a 17670, which has lower capacity - or you could get a HAIII natural 18650 Leef Surefire C-type body.

 

[herolet]

C2 won't fit an 18650 stock, it will fit a 17670, which has lower capacity - or you could get a HAIII natural 18650 Leef Surefire C-type body.

...I guess the Leef C-type body is larger in overall diameter then or is it just the inside hollow tube is larger? Does that mean I would need to get a larger tall cap as well?

Thanks.

 

[RichS]

I ordered a C2 which is arriving tomorrow, and have a Deree 3SD module (OP) ready to put in it. However I will be using primaries in it since it won't take an 18650. I also have an extra 2SM module, which I may end up using with it if it seems to work better with the twisty tail cap of the C2.

I really liked the look of the M2, even a little better than the C2. But the reason I went with the C2 is that the reflector is further back on the M2 for the shock absorption, so the C2 should have more spill and overall output than the M2 because of that.

 

[stevie-ca]

I just received a Malkoff M60 and installed in my M2. What a difference in output from the original bulb.

 

[herolet]

I ordered a C2 which is arriving tomorrow, and have a Deree 3SD module (OP) ready to put in it. However I will be using primaries in it since it won't take an 18650. I also have an extra 2SM module, which I may end up using with it if it seems to work better with the twisty tail cap of the C2.

I really liked the look of the M2, even a little better than the C2. But the reason I went with the C2 is that the reflector is further back on the M2 for the shock absorption, so the C2 should have more spill and overall output than the M2 because of that.

Good to know that I am not alone. Please let us know how the 3SD work with your C2.

Thanks.

 

[herolet]

I just received a Malkoff M60 and installed in my M2. What a difference in output from the original bulb.

I've considered that too, but wanted to have a low mode to have long run time. Hopefully one day he will be making some multip-level drop in. Am I dreaming?

 

[Mercaptan]

I ordered a C2 which is arriving tomorrow, and have a Deree 3SD module (OP) ready to put in it. However I will be using primaries in it since it won't take an 18650. I also have an extra 2SM module, which I may end up using with it if it seems to work better with the twisty tail cap of the C2.

I really liked the look of the M2, even a little better than the C2. But the reason I went with the C2 is that the reflector is further back on the M2 for the shock absorption, so the C2 should have more spill and overall output than the M2 because of that.

Excuse my ignorance, but aren't the SD modules rated for 4.2 volts max? Two 123 primaries would fry that board, I think... SM work with higher voltages.

 

[WadeF]

Yes, the 3SD will be fried or damaged if primaries are used. 1SD, 2SD, 3SD by Dereelight are for 18650's ONLY.

2SM can work with primaries.

 

[flash99dark]

Herlot,

I recently put a new Dereelight Cree Q5 1SD in my C2 Surefire Centorian and used with AW 17670 consider it to be my best purchase for 2007. You will love
the Dereelight Modules [make sure to get a spare OP reflector so you can have it both ways].

I would say that if for any reason you did not like the module you could probably sell it here in under an hour.

[I do not work for Dereelight or have any investment in the company]

 

[Illumination]

Yes, the 3SD will be fried or damaged if primaries are used. 1SD, 2SD, 3SD by Dereelight are for 18650's ONLY.

2SM can work with primaries.

I thought the 2SM only worked in a Dereelight host (the batteries go in backward)

 

[RichS]

I thought the 2SM only worked in a Dereelight host (the batteries go in backward)

I was wondering the same thing. I just found out my new C2 came in the mail and is home waiting for me and I wanted to try my 2SM pill in it. Do I put the battery + toward tailcap in the C2 also?

 

[Illumination]

I was wondering the same thing. I just found out my new C2 came in the mail and is home waiting for me and I wanted to try my 2SM pill in it. Do I put the battery + toward tailcap in the C2 also?

You should contact Alan at Dereelight. I think the 2SM can only be used in a Dereelight body, but I'm not sure. I think that this module has confused a lot of people (myself included). Its unfortunate that they couldn't design it to fit like the other modules. I dont know if the batteries in the C2 will work if reversed...but if they are not reversed you might fry your module.

Good luck and let me know how it works out. I got my G2 yesterday in the mail and havent figured out which module to get.

Ideally I'd get the 3SD, but I'd rather run on primaries.

 

[RichS]

Well..success!

I got my C2 Centurion tonight (awesome light BTW), and put my Dereelight 2SM module in it with the batteries positive toward the tailcap. It turned on fine, but only in low mode. Momentary action worked as well, but twisting the tailcap full tight only activated the low mode. I assumed the spring wasn't being fully pressed against the center contact on the pill, so I put a small ball of aluminum foil inside the spring. Turned it on and bam - high mode!

Unfortunately I can't get both the high and the low mode to work on the C2, but high mode works fine for me. I tried using even less foil, but still only high mode activated. If anyone has an idea on out how to get it to activate both modes on the 2SM module, let me know and I'll give it a try.

BTW - thanks for your warnings about using the 3SD pill with primaries, I didn't even think about that. I would have fried the thing for sure...

A couple of shots: