2D Mag P7 shopping list + Build thread

[spankone]

ok I've set my sights on modding a 2D mag because of its nice size, I wanted to run run it direct drive and it seemed to do that my best option was to run 3xC cells. it seems that a better option considering that I dont have any C cells or charger is to go to 2x18650 cells instead using a DW buck converter.

afterall I've all way's been told build it once and build it right!

the shopping list

4x18650 = 2xspares
charger
P7 D***I
Britelumens Heatsink
Buck converter
Battery adapters
Epoxy
thermal paste
total cost is nearly £100 bit more than I wanted to spend but build it once build it right means I have to spend a bit extra

any thing else / recomend

EDIT

its built

well its built still waiting on the 18650 batterys though,
I'm not going to post a build thread but if you want to know how its done check out these links

http://www.candlepowerforums.com/vb/showthread.php?t=238641

http://www.candlepowerforums.com/vb/showthread.php?t=195358

link to my pictures, can't wait to test it tonight

http://smg.photobucket.com/albums/v201/spankone/modified%20maglite%202%20D%20cell/

beam shot taken with the room lights on from 2meters away

the back fence is 5 meters away and the side fences are about 3 meters apart still using standard refelctor and lense

 

[tx101]

UCL glass lens
Metal orange peel reflector or you can get away with
spraying the stock Mag reflector
Teflon sleeved wire

 

[eprom]

Maybe you can use FiveMega VLOP Deep Alu. Reflector

http://www.candlepowerforums.com/vb/showthread.php?t=242571

Your choice.

EpRoM

 

[spankone]

I was thinkin of spraying the reflector, whats the best product to use? could I use a simple clear laqure?

 

[spankone]

is this epoxy ok

http://www.maplin.co.uk/module.aspx?moduleno=46006

 

[tx101]

What are you thinking of using that epoxy for?
If your thinkmg of using it to stick the emitter
to the heatsink, don't
Use Artic Alumina epoxy

 

[spankone]

I guess I can source that in the uk?
thermal paste, is that just cpu paste?

 

[tx101]

you can get it on ebay

The thermal paste you use is the same as the CPU stuff

 

[spankone]

thanks

 

[spankone]

I've had many hobbies and projects but flashlights are very anoying, I'm waiting for batteries, driver, heat sink, led. all making there way to me from over sea's and a looming postal strike aswell. I can't stand waiting I want to build this now lol

 

[spankone]

most the bits have arrived now but I'm still waiting for the led,heatsink and batterys

 

[tx101]

Hope they don't get held up in the Postal strike

 

[spankone]

well the led and heat sink just arrived 10mins later all soldered and in my torch. running off 3xaa atm and seems to be working ok. just need to wait for my 18650 batterys to arrive

 

[Justin Case]

Which buck driver did you select? IIRC, your link #1 describes a direct drive Mag build, and link #2 uses an AMC7135-based driver, which is limited to 1xLi-ion or 3xNiMH magnitude input voltage.

If you can't find thermal epoxy but can find thermal compound (paste) or alumina powder (e.g., from a chemical supply house), you can try either of these workarounds to glue down your LED:

- Put the thermal compound under the LED and use regular epoxy around the circumference of the LED's case to fix the LED in place on the heat sink

- Mix some thermal compound with regular epoxy to create a homemade thermal epoxy (I've done this using Arctic Alumina thermal compound and Devcon 5-minute epoxy)

- Order some alumina powder from The Sandwich Shoppe (or any other convenient source) and mix that with regular epoxy to make thermal epoxy

 

[spankone]

used a Der Witchel buck convertel

http://www.candlepowerforums.com/vb/showthread.php?t=201981

I used both of the build threads for refrence

 

[Anto]

Not bad, can you focus the head anymore so you won't get a donut? KD and DX both have $5 reflectors that fit the P7 nicely with some modification.

 

[spankone]

I'm not sure on what size refector it would need

 

[JamisonM]

I'm not sure on what size refector it would need

A standard maglite reflector will work, but because of the spacing between the LED dies, it will have a hole in the center of the hotspot. You can alleviate this by sputtering your reflector or buying one with a textured finish. You can also defocus the reflector slightly. One thing I see that you should think about doing is pulling the wires going to the LED through the heatsink more. This will help you better focus your light.

 

[Anto]

http://www.dealextreme.com/details.dx/sku.12229

 

[spankone]

DX have only just shipped my batterys