Penta Cree NASCAR Spectrum M@g

[Greg G]

I finally finished this baby last night around 3 AM. :sweat: It is a NASCAR Fade as we call it, or Spectrum light as called by M@glite, with 5 Cree Q5's.

List of parts: :naughty:

NASCAR M@g host

Sandwich Shoppe heat sink

Sandwich Shoppe Shark converter board

Sandwich Shoppe McR19XR reflectors turned down to .650"

Cree Q5 WD(edit on the tint) tint emitters from Cutter Electronics

4 AW C cell batteries

UCL lens

Custom made copper heatsink for the Shark

To fit all four battieries in I shortened the bottom of the stock M@g switch in my lathe so that the positive end of the first battery touches the little V-shaped contact. The spring and the circular pad that holds it are gone.

I made a delrin sleeve to center the batteries in the M@g. I spot faced the center of the tailcap and shortened the spring. The trimpot has been removed and jumpered for the full 980ma.

A few pics. I don't know if I'll take any beamshots. I've neve done that before and I'm sure you all know what kind of light a penta Cree puts out. A heck of a lot! :duck:

Hope you guys like it.

 

[Greg G]

 

[Greg G]

 

[A123Powered]

Very nice looking light!

How is the heat sinking with that setup? I have a quad CREE Q5 driven at an amp with a buckpuck, in a C-cell Mag and it gets pretty warm after 15 minutes. My heatsink is probably not as efficient as it should be though.

 

[Greg G]

The heatsink in this light started off as an aluminum C M@g tri/quad version from the Sandwich Shoppe. I like it because it is the full diameter of the inside of the head on the light. I turned the face of it flat so I could Arctic Alumina the 5 emitters down. It comes grooved for 3 or 4 Crees. Then I turned the threads off the bottom side, leaving a spud, and made a copper slug that is about 1 inch long and just fits inside the bore of the light. I bored out one end of it for a .002" press fit over the spud/tail of the aluminum heatsink, and pressed it on. Altogether it's pretty massive.

I haven't run it for a long time yet, and probably won't. This light is mostly for showing off, and I don't want to use it daily because I'll end up dropping it or scratching up the finish. Nor do I want to fin the head. I have other lights for general use.

I have plans to put 7 emitters in this light. I *think* I can fit them in with a lot of tweaking. I'll put that setup in this light and move the penta heatsink/emitters into another light with a finned head.

 

[Bimmerboy]

First time I recall seeing this kind of mod with a NASCAR host. Very nice light.

But I like the dual intake manifold even better. :devil:

What is it, and what does it go on?

Edit: Am I counting 10 tunnels?

Viper?

 

[Greg G]

LOL, yeah you got it, it's a Dodge Viper intake manifold. It's on a twin turbo engine I'm working on at the moment. Should make about 1200 rwhp when finished. I thought it would make a decent background for the light.

 

[Bimmerboy]

Should make about 1200 rwhp when finished.

Yeah baby! :rock:

You live anywhere near NY? I absolutely NEED to go for a 1200 rwhp ride!... lol.

Betcha' I take ya' in the turns though. :nana:

 

[Greg G]

Well, it's not my car. It belongs to a customer.

Actually, these cars do great in the corners. A lot of guys road race them. I don't know what you have, but a Viper with decent tires on it would certainly be some good competition for you.