Another Regulated P7 M@g 3D (w/ pics and beamshot)

[Supernam]

Hey guys,

Here's a build I just completed. I'm very happy with it considering the the cost/lumen of this light. It's a CSXPI P7 running at 2.8A. The heatsink is an H22A "DHS" with the centering posts dremeled down and holes enlarged to 3mm. Arctic Silver to isolate slug. Anodizing sanded down inside mag body to help with fit of sink and thermal conductivity. Thermal greased up and pressed the sink into mag body. Thermal grease on head and body threads to help conduct heat from body to head.

It has 2 AMC7135 1400mA boards in parallel. I wanted to take pictures of the wiring before shoving it all together, but my hands were covered in Arctic Silver. The boards are not sandwiched together like the one KaiDomain has. Instead I Arctic Silver epoxied them individually to the inside of the Mag body. This is to help with heat dissipation.

The reflector was sputtered with clear gloss spray paint and remarkably resembles AND performs as a high quality (expensive) metal reflector. I even tried this light with the modified stock reflector side by side with my FM MOP reflector... no difference! I added a regular glass lens because I hate scratched lenses. A UCL would would perform better at a higher cost of course. Thanks to DarkZero for his advice on sputtering.

Finally the pics...

Note the reflector sputtering.

No beam donut here!


Beamshot!
Canon 20D- AWB, f/4.5, 1/200, ISO3200

First- Novatac 120T on High. Fresh primary cell.

Mag Seoul P7 @ 2.8A- CSXPI. No donut!

Overall, I'm very happy with this build. It's relatively inexpensive. Easier to work with than multiple emitters. New modders should be able to do this mod, especially if they direct drive.

Thanks for Looking! :twothumbs

 

[worldedit]

Are you sure Arctic Silver will insolate the led? It has some silver in it!

 

[Supernam]

You wouldn't be seeing beamshots if it didn't!

 

[Stereodude]

Are you sure Arctic Silver will insolate the led? It has some silver in it!

Arctic Alumina is a better choice.

 

[toby_pra]

WOW very nice and clean mod!

 

[darkzero]

Thanks to DarkZero for his advice on sputtering.

Glad you were able to save the reflector, looks great! Nice work on the mod! :thumbsup:

 

[jeffosborne]

Looking good! Reflector is a work of art, me thinks.

A+ on this mod, sir!

One question: how long does it run before it is too hot?

Thanks,

Jeff O.

 

[Supernam]

I have a small problem right now. I don't have D sized NiMh's, but I DO have a MagCharger. I took the 6v battery from that and shoved it in here for testing. The drivers get REALLY hot at that voltage so I could only turn on the light for 5 seconds at a time as to not damage the drivers.

I had tested the emitter and sink together outside of the light direct driving off of 3 AA Eneloops. The sink got hot to hold in about 30 seconds. Of course there would be better sinking sitting inside of the Mag, but I cannot quantify this.

I ran down some 3 D Alkalines with this light, it runs at about half brightness due to voltage sag. But obviously heat isn't a problem at half power. I'm not going to buy D NiMh's because I don't plan on keeping this light since I have a P7 4C NiMh with external charging jack build on the way.


***Edit

I managed to get my hands on 4C NiMh's and ran the light for about 10 minutes before it was hot. Not too hot to hold, but getting uncomfortable to press against my cheek. It's also 75 degrees here in Orange County, so the ambient temps weren't helping it cool down much.

 

[ace0001a]

Yeah I did one last week doing almost the same thing. I went with direct drive, using NiMH batteries. I also had a Malkoff Devices heavy stipple reflector lying around. Turned out very nice.

 

[rizky_p]

so this is using stock SMO mag reflector sprayed with clear spray paint and becomes MOP? looks really nice.

 

[Supernam]

Well, technically it's "sputtered" but the appearance of the reflector and beam are indistinguishable to that of a MOP in my opinion.

 

[Timson]

Supernam - I think you ought to be giving 'sputtering' lessons....That's fine work - very professional. :thumbsup:


Tim

 

[gojira54]

Nice mod, looks very clean!
Some tips on how to 'sputter' the reflector would be appreciated

 

[darkzero]

Nice mod, looks very clean!
Some tips on how to 'sputter' the reflector would be appreciated

Just do a search. Lambda was the one who originally started sputtering MagCD reflectors.I then mastered it & had a for sale thread where I sold a great deal of them. I also sold sputtered MagAA reflectors.

If you search you'll find plenty of info that Lambda & I have posted on how to sputter. I can sputter from very light to very heavy to simulate orange peel & also sputter to kind of resemble & perform like stripple. Practice makes perfect & it's not too hard.

I can't say for sure since looking at the reflector at different angles makes the orange peel look different but the reflector Supernam did here looks close to medium to heavy. Good to smooth out the P7 but will loose a good amount of throw if used with a single die LED.

Funny, when I was selling the sputtered reflectors, all the ones that had medium to heavy sputtering I would throw out because of the loss in throw. Luckily I still have some of them cause they work great with the P7s mods that I had.