Back in Black - SST-90 4D Maglite "Shower Head" Aspheric build.

The part number I received from mouser, in a sealed package, was the "N" bin. That's all I know. The heatsink is way too small for this light and I only meant it for a quick turn on wow light. It was never meant to run for more than a minute at a time. In order to cool one of these in a passive cooling environment, such as a flashlight, it would take a piece of copper/aluminum the length of about 2-D batteries, plus the area above the switch and where the switch is as well (about 200mm in length). If I had used a 6D flashlight, I would have filled the first 1/3 of the light with a heatsink, but I had a 4D and space was such an issue, that I put the drivers flat, to gain a few mm of room. I never imagined it would be used for more than a WOW light. I thought wrong... See, I'm not a flashaholic, so I don't think like one. I turned it on the first time and thought WOW, but ok, what would I ever do with it? I never ran it for more than 30 seconds at a time. You guys turn them on and immediately see how many amps you can squeeze out and for how long and make charts & graphs, LOL, I'll never understand, (I am Not putting y'all down, more power to you and good for you and the knowledge you share). Definitely, this is the second SST-90 that I have tried and failed with and this is the last SST-90 I will ever waste the time on. An SST-90 at 9 or above amps needs to be in an active cooling situation. A fan, or water cooling, if it's going to run steady for several minutes. I just wanted to make a thrower that would reach over a mile, to put all the chinese throwers to shame. That was the whole reasoning for even doing it.

Anyhow, I'm done rattling on over nothing...

Justin please don’t stop making SST-90 lights! Not until an LED comes out which surpasses it (I’m hoping XML2). Even at 1000 lumens that’s got to be brighter and throw further than any chinese thrower. Your work is great and a minor setback shouldn’t discourage you :slight_smile:

After all, you can do what a lot of people here can’t do :slight_smile:

Yep, with the circles and the arrows and the paragraphs on the back explainin’ what it’s all about :wink:

BTW, I do have a 6D Mag waiting for some fun J) Those NiMH D cells that I have are 9.5 Ah (and will put out at least 50A). That should make for some fun wowness.

What are you going to run on 50 amps?

The 540,000 lumen array that I built draws over 120 amps from a 48V supply, but has no battery.

The 180,000 lumen array draws over 40 amps. It has a backup battery made from A123 20Ah prismatic pouch cells.

And if 50 amps from a D cell won’t cut it for you, Saft makes a NiMH D-cell rated at 70 amps continuous/200 amps pulsed… but they aren’t low self discharge.

Definitely a dealbraker.

Definitely a dealbraker.

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Yep, that’s why I bought the Imedions… they don’t actually say what kind of current they are rated at. They do peg a 50A meter though. 9.5A is 1C on them, should be safe.

Wow d cells are crazy. How many will you use? And what kind of runtimes would you beeedpecting?

It uses 4 D cells. At full blast it would run the light for an hour (but, due to LED heating, the light output falls to half after three minutes). On medium it would run for 4 hours with no drop in LED output. I don’t remember the current on low… it was under an amp so call it 10-12 hours.

I still think this is one of your best mods. Would you ever do something like this again?

I would love to do one with the MT-G2 if I could figure out using two lenses. One near the led to pre-focus and then the large aspheric on top. Either that or my own version of the wavien ring. Yep, I have to try making one myself and see what all the fuss is about. I'm sure not going to pay for one, LOL.

Also one of my favorites. So much so that I copied it for my own use.

This thread is almost a year ago, while it’s still looking very impressive to me. So texaspyro how about swapping the LED into de-domed XM-L2 U2? Over 2 miles possible?

I wonder where this light is now, and what its doing.

It’s sitting on my floor, thinking if it wants a different or de-domed LED…

have anyone tried to dedome a SST90 ?

Yes, it’s trivial. Grab dome with pliers and twist…

Same shower head but on a long run body. De-domed XML2

This is madness!

This is a classic mod by O-L. So much good work and info in it.