used to be a dorcy.......(lots-o-pics)

I decided to work on a dorcy 1 watt to make it more suitable for my needs, and here's what I came up with;
assembled:


I wanted to use a scope ring to mount it to my Mossberg 590, so I milled out an area to fit it. Here it is without the ring (I know the lathe work is rough, but I did it by clamping it on my wood lathe, so all and all, it's not too bad. The work on the head was just for fun):


exploded view:


I used an old Q3 board that was laying around, cut out the bottom of the "light engine" resistor holder to use as a spacer, and mounted a Lux3 red/orange to the original heatsinc:


The switch is a pigtail pressure switch I had laying around, and built a drop in which can be replaced with the original reverse-clickie (bonus points for anyone who recognizes the white piece I used to house the switch):


And, of course, the beam shots, first alone at 3':


and compared to my HDSU60 on high at 3':


This thing can almost out-throw my HDS, and it's PAINFUL to look at - no up close work with this one! I'd love to replace the stock heatsinc (if you can call it that) as well as the spacer with a 1 piece aluminum cylinder, but I don't have the tools to turn it - maybe someday.

Not too shabby for a $16 light, $12 LED and a bunch of old parts!
Josh

trivergata said:

(bonus points for anyone who recognizes the white piece I used to house the switch):
Josh

Click to expand...

Nice job! Is it an mn03 (e2) bulb base?

pretty close - it's out of a stinger that met it's end under a firetruck.

it's loss is my gain - one of those parts that I thought would come in handy someday - just had to keep it for about 3 years..........

Make sure you isolate the star from negative, as it's connected to the postive bond wire of the luxeon and can melt/fuese open if it touches negtavie.


So you're using a 4.5v in from the batterires AND a boost circuit?

I already isolated it - learned that one the hard way.

I figured as well as the Q3's run on R123's, I should be ok. I have gotten some really weird numbers across my V/A meter, though. 275ma? Doesn't seem right to me, but then again I just built a DB900 and my meter says it's only drawing 350ma or so - maybe my meter is jacked up.

With the downboy, if you read the battery draw, it will be less than what the luxeon is receiving since it is taking a higher voltage and stepping it down.

I know DD 3xAA NiMH or alkaline is pretty close to full power with a R/O. I have no idea what the circuit will cause it to do. It may even be a current limiter... best to measure current right at the LED.