Sounds awesome and love the concept drawing. Is it really necessary to aim the heads to the same point? It seems the hotspots would overlap after a certain point with all the heads parallel.
i probally would not have to align them if all four are perfectly parallel. i will probally do some testing once its put together to do final ajustments.
Awesome. This is going to be a great learning experience for all of us. We've seen people build multi-head flooders, but you are building a mega thrower. Your build will probably reveal some the magic that manufactures don't share when it comes to multi-head throwers.
I have already torn down a SRK 4x to get measurements, and have the four DSTs with the heads off them for measurements. I will post a new build topic soon with photos.
So the 4 DST/SRK hybrid ( BARRETT40) is slowly underway, with some parts waitng to arrive, i have began the billet aluminum plate & part measurements, etc.
I’m curious though if anyone else have tried De-Domed XM-L emitters in the DST and got diferent or better results ?
I was thinking of dedoming the 4 emitters for this light, as its intent is to throw as far as possible.
Also i was thinking of modifing the design so that the switch sections of the 4 DSTs to remain on the heads on this light project, meaning i will have a alot more functions of selecting the number of heads that can run on either mode, as in having only one head running on the Low mode for a super long run time on the 4 18650s when i need a long run time, and adding a “moonlight” circuit seperately so it can even have a moonlight mode on one head.
Why do you need four separate heads? Why not replace the emitter in one DST head with a copper-sunk SST-90 and give it as much wattage as your batteries can safely discharge?
I already have several SST90 lights ( Olight SR90, Trustfire X6, etc) and this is to be a multi-head thrower based on the Skyray King M4 ( 4 emitter) light using its driver, switch, and battery tube.
XMl2’s on copper star or even the stock XML emitter de-domed on copper does surprisingly well too. In fact I’m really liking the tint on the stock de-domed XML’s on copper more that XML2 here. It really brings out the natural colors of terrain, greenery, wood, etc., and is almost right up there with eye-perceived output against the XML2 due to its warmer tint in those surroundings. IOW it’s easier on the eyes.
This doesn’t become a super thrower until it’s de-domed IMO. Don’t let anyone sway you on this design either. Even three DST’s here will rock. I think it’s gonna kick major butt. :bigsmile:
The SST-90 emitter has more surface area so less intensity per square inch which is what is required for throw. Throw can be calculated by surface brightness and the size of the reflector. Don’t ask me how the math works because I don’t know. I just know that it’s how it works. maximise the intensity and you maximise throw. For instance I have modded several SST-90’s and replaced them with dedomed XM-L2’s at 7amps the difference astounding. The SST-90 was useful when the most you could pump through an XML was 4amps or so. Now that you can get 1500 lumens out of an XM-L2 it simply blows the SST-90 away in the throw department. Same lumens but four times the intensity.
I saw that this thread popped back up on the first page and got so excited. Imagine my disappointment when I realized that you have not finished it yet, despite being told by MRs to quit yapping and start building. Don't you know that it is wise to always do what the MRs says?
I have all the parts needed now, ( the SRK body, XM-L2 emitters, Four DST heads, 3 + AMP drivers for each LED, a top handle with switch, and the Billet Aluminum metal stock)
im just waiting for after the holidays & xmas madnes to begin putting this beast together. 8)
i have all the components to build the ultimate Skyray/DST monster, the BARRETT40.
in these photos is the main parts to the light, including the four DST heads, billet Aluminum plate, the SRK body, and the donor light that will donate its top handle to the project.
- The plan for this beast may be modified to use “two” SRK bodies, ( 8 - 18650’s in parallel for the high amperage load) and custom 4 seperarte drivers pushing the de-domed XM-L2’s to a screaming 4 to 5 amps each on copper stars, with a unique ability to turn off or on the individual DST heads seperately using the original DST switches. I have already worked on the main plate, using a center ajustment bolt that will allow fine tuning of focus of the four DST heads to get the most throw posible at a given distance.
This light will be all pushing for maximum output and maximum throw. Four DSTs driven to the maximum at the same time at the same point.
I will continue work on this light after the new year
In the photos below shows the rough idea of what is to come for this light:
not for this light as its intended build is a thrower and nto a flooder. The MT-G2 has more lumens and would be a great flooder, but the lux for thrower applications the MT-G2 can’t match an XM-L2 dedomed, (or even a well driven XP-G2 dedomed for throw.)
Personally, I like floody lights better. I find that my 4x SRK has plenty of throw and a good enough flood but I wouldn’t mind trading some throw for flood still lol
Why turn a flashlight into a laser ?? Then again, why not I guess lol
