A build to challenge the Surefire M6...

[Tessaiga]

OK.. I admit.. this is the fruit of a mind that is too free at this point in time.

I was thinking about the MN21 in an M6 and about how glorious it would be to have significantly more than the 20 min achieveable with primaries, without having to change batteries often... :twothumbs

Even 2 X C li-ion would probably not make it past the 30 min mark... :shrug:

SO... I was thinking... :thinking: :thinking: :thinking: :thinking: :thinking:

Build a body that takes 4 stacks of 2 X 18650 wired in parallel, connect it to a KT4, throw in a MN21 and VIOLA!!!

Yes??? Possible???

Or am I just in dreamland?

 

[roadie]

adrian .... u got to go read read on rechargeable M6 ....... in the fourm

beware to note the voltage of the mn21 is 9 volt!

its kinda of good to see what was being posted once a while ....

cheers

 

[Tessaiga]

I have read on the rechargeable M6.. and I know the MN21 is 9V...

4 stacks of 2 X 18650 in parallel would still be 9V yeah?? kinda like the 2 stacks of cr123 in the original M6...

In the rechargeable M6, you would still need the M6.. I was thinking of how to get the same effect by not getting the SF M6 and just building the light around the KT4 and the MN21

Sorry if it wasn't clear in the first post..

 

[Owen]

You would instaflash the MN21 due to the voltage not dropping.

 

[Tessaiga]

You would instaflash the MN21 due to the voltage not dropping.

Ah.. OK.. so how do I get round this problem and still have plenty of juice to run the MN21 without going the route of the rechargeable M6??

 

[tussery]

If all you are looking for is an affordable rechargeable light with the output of an M6 why don't you look into a ROP Mag Mod.

 

[fivemega]

Another option is 3P/2S 17670 powers up a Philips 5761 in M6 for about 45 minutes.

 

[Tessaiga]

Hi guys, thanks for all the recommendations.

I guess what I did not make clear was that I wanted to build a longer running light around the KT4 and MN21, and no, I do not want to buy an M6..

I do have a ROP 2C currently... so...

To rephrase it more accurately, how can I build a longer running light with a KT4 and MN21, apart from the currently available leef bodies (including the new C bodies)?

 

[defusion]

Hi guys, thanks for all the recommendations.

I guess what I did not make clear was that I wanted to build a longer running light around the KT4 and MN21, and no, I do not want to buy an M6..

I do have a ROP 2C currently... so...

To rephrase it more accurately, how can I build a longer running light with a KT4 and MN21, apart from the currently available leef bodies (including the new C bodies)?

if you don't want current body's, make your own body.

 

[Tessaiga]

Hi defusion, thats my point and the title of this thread exactly, if I were to build my own body, what type of battery configuration should I be looking at?

4 parallel stacks of 2 X 18650 in series appears to be too much as the voltage will not drop enough.. so.. what can I use??

4 parallel stacks of 2 X 17500/16340/18500/17670 in series????

 

[tussery]

Your best bet is not to run any LiIon cells in parallel on the MN21. I believe 2 18650's run the MN21 but even with those you risk the chance of instaflash on the MN21. As was stated earlier though you could run a 2x2 18650 setup if you use an AWR Hotdriver.

 

[defusion]

you could get a bi-pin holder for the M6 (also works on anything else running the millennium turbohead). that way you have a huge selection of bulbs you could run. the problem being that it might pop out of the holder if exposed to vibration or shock.
otherwise, you could still run the MN21 on dual stacks, but you will have to live with a shorter bulb life, or you could use a primitive regulator that would help bring the voltage down a bit. or use a more advanced one like the AWR hotdriver to have regulation all over the output range of the batteries.

 

[defusion]

I just realised there is something close to the form factor of a M6, the wolf eyes M300!
it runs on 3 18650's, and can run a 380lm bulb for slightly over an hour (and it's regulated!!)
it's pretty new, but I'm sure there will be some lumens factory bulbs after a while to up the ante a bit.

 

[Tessaiga]

Thanks for the heads up on the M300.. I did some reading and it appears there will be NO LF bulbs for this one...

Apparently regulated but the quoted output appears to be bulb lumens...

Ouput will not be a match for even the MN20.. :thumbsdow

 

[defusion]

thats too bad. though i think the output will closely match the output of a MN20. and it has the advantage of having a focusable beam! very handy feature on such a light!