I'm shocked by this Shocker... (de-domed now, more info)


Taken at about 1 foot away from the wall, camera (phone) was just above the torch. The “holes/doughnuts” disappear completely at about 1 meter or 3 feet

IOS driver has visible PWM?

certainly not visible to the naked eye even on the low setting. What you see through the camera LCD and in this pic is definitely not what I see in person. I just sent the original to my computer to see what the EXIF was for the picture to get a better idea:
Shutter speed: 1/861s
F-Number:f2.65
ISO: iso32
Not sure what it all means for helping calculate the PWM (or even if that’s possible). I also counted about 70 lines in that pic….

These are the doughnuts I’ve been talking about. But 1 foot is too close and these should be normal for de-domed XM-Ls/XM-L2s. :slight_smile:

If you move to 2 to 3 meters and still get these doughnuts then I think there’s a problem with focus. If your doughnuts completely disappear at 1 meter then IMO you have a perfectly focused de-domed Shocker. :bigsmile:

Sam Fisher?

Ahh, ok, thanx! Yes, this makes some sense now. I'm seeing the donut holes further out, so worse than yours. The PWM's do exist in med and low modes on this driver, just not as bad as a DRY driver for example. It's listed at 3900 Hz.

Update:

To improve the clearance for the wire connections on the de-domed Shocker I'm working on, I dremel'ed out the backside of the reflector on each side of the LED holes, taking out 1 mm or so of aluminum. Think that did the trick - measured 436 kcd at 5 meters with Samsung 20Q's reading 6.0A. I'll post pics of the cutouts. Was worried about the alum shavings but was able to clean out the reflectors with blown air from one of the squeeze bulbs. Think that's the best I'm gonna get out of this unit - not sure why I got a little better (467 kcd) in the first one. At 3 feet, the dark spots go away but still quite evident at 1 foot.

The LED's:

rotary tool used to create the depressions:

Cleaned up:

Sanded down a little:

wow that’s a ton of work Tom. I can definitely see why you don’t care to mod more BTU’s in the future…. at least not these de-domed ones with the amount of time/effort that goes into focusing them. I’m also extremely and unbelievably appreciative of the time and patients you have for your work rather than just slapping it together and calling it a day. :bigsmile:

I may have another (or possible more) request for a mod from you in the near future, but I promise these ones are much more straight forward (and cheaper)! :stuck_out_tongue:

Dang Tom, these lights are a LOT of work. BTU’s have some serious aluminum in their reflectors. Looks like you took a good chunk out in each spot and its still safe. Very smart mod.
And your seeing some nice numbers. Your latest results are good enough to out throw a 7000 lumen 60wt FF4 HID.
So on the IOS driver when running on protected cells it has full regulation and appx 3.5A per LED, correct? And with free flow cells lioke the 20R’s it basically puts it into a direct mode and powers it at about 6A, right? Just trying to understand that driver a little better. If that’s the case its pretty cool that you can have the option of a “moderate” regulated appx 3400 lumens and 350k on 3400mah protected cells, along with decent run time. Or you can “turbo” charge it with 20R’s and get a boost of maybe 25% in power and throw, though at the cost of a short runtime.
Pretty cool have either option with one driver.

Can’t be more agree on the focusing part which is the most PITA. I have done few mods by myself with T08 and T20 and I’ve had some difficult time with their focusing issue.

Well, to get the high amps of 5-6A, I bridged the resistors on the IOS driver, so, with 20Q's its 6A, but higher resistance cells will get lower amps. I'm thinking 3.5-4.5A on good KeepPower's - can easily check. Though I don't believe it's regulated, but it will work like you are saying - longer runtime on 3400's, while crazy output on 20R's or 20Q', etc. Pana PD's are somewhere in between. You can actually get protected Pana PD's - HKJ reviewed them here: http://lygte-info.dk/review/batteries2012/EnerPower+%2018650%202900mAh%203C%20(Blue)%20UK.html. Little better than KP 3400's but less capacity.

Bad thing of course is no regulation to speak of but you do get advantages with the copper boards of course. The XM-L2's on copper have the high Vf demand, so even with the regulated BTU driver, the amps drops to even 3.2A I've seen when run with XM-L2's on copper.

Truthfully on a big light like this runtime is a non issue for me. It’s not like I’m going to be out walking a dog with a light like the BTU. It’s always been a “fun” light for me. So lacking regulation on a IOS dedomed version won’t matter. I have the bad habit of charging my cells up before any beamshots or light testing. Well not bad habit, but bad for battery life.
Plus I have my regulated BTU driver version just in case I want to actually use one for true flashlight duty requiring more runtime. 3740 lumens, 184K, with 3 x 3400mah cells driven at a regulated 3.5A range will have decent runtime. Not as good of runtime as a TK75 or RC40, but still reasonable.
Man, carrying a BTU in each hand I bet would be a workout though. Like two little dumbbells.
Anyway, love seeing your threads like this showing what all it takes to make all of these lights perform outstanding like they do. Keep up the awesome work!

Wow! :open_mouth:

This keeps getting better and better. I think I’ll be doing this mod on my BTU too, TomE and push it even farther. Thanx for sharing all these. :bigsmile:

Ok, this is final #'s on this Shocker for rdrfronty:

fresh charged Samsung 20Q's, 6A tail reading:

lumens: 4,437 @start, 4,182 @30 secs, throw: 420 kcd (measured at 5m)

fresh charged KP 3400's, 4.4A tail reading:

lumens: 3,638 @start, 3,519 @30 secs, throw: 355 kcd (measured at 5m)

Maybe with 20R's it might be better, but it's all close enough. I got 436 kcd yesterday but couldn't repeat it. I think the 5 meters is too short for this light - needs more distance to focus.

those numbers are outrageous! cant believe you are getting over 400 lux and over 4000 lumens!!! if you really think about it, thats like insane right there. if the light wasnt so heavy, this has to be like the king of all lights.

Tom, did you ever get numbers to a shocker you modded with all the new tricks with the dome on? you think 5000 lumens is possible, hahah

According to the 20% rule, yes, 5,000 is possible. Still waiting for the U2 1A's from Hank - shipped the 22nd, tracking status is "Origin Post is Preparing Shipment", so makes no sense but heard this is happening lately with HK, then the order just shows up and tracking info updated the same day.

I wonder if Ric is watching your modding works and being surprised that how far his product can go? :bigsmile:

Tom, those numbers are awesome! Couldn’t be happier with your results. Way back when we first started talking about this I mentioned I was hoping for 3000 lumens and 300k. Your setup is waypast that even on good protected Keeppower cells. And with Samsungs, well over 4000 & 400k. Very cool!
I’ve got 20R’s waiting for it. If the 20R’s get no more boost, I’m still 100% cool with it. I’ll likely run it the KP’s 1/2 the time anyway.
These numbers out of a LED is phenomenal.

Or better still - Ric will sign a contract with TomE then start selling BTU Shocker ‘TomE’ Special Edition. :bigsmile:

Ok, couldn't leave well enuf alone... After routing out my 2nd Shocker reflector, think I needed to get closer to the LED openings. By checking the alignments with a Noctigon, thinking it could have been done better so maybe I wasn't getting it seated well. So, I re-worked the first one pictured above and made the cutouts bigger and closer to the LED openings. I think I'm seeing a little bump, maybe measuring 427 to 430 kcd now, but very hard to do at 5 meters. It certainly felt like the reflector dropped in place better. Ok - that's it for now. Onto shipping!! It would be much better I'm sure to test this thing at 15 meters or so. I'm seeing the same amp readings on Samsung 20Q's or 20R's. I believe SONY 30A's would read the same as well -- all about 6.0 amps across the switch.

I think when I measured 467 kcd on my first super thrower, I might have been getting reflected light on the meter - easy to do with a Shocker's wall of light it outputs. I still have a far from ideal setup for throw measuring, because indoors with white ceilings, could possibly impact the readings with reflection.

Very cool numbers Tom! And from personal experience, I know how tricky it can get taking throw numbers when they get so high of Kcd’s. Like I’ve said in the past, simply being off a foot can make 50-70k difference when taking a reading on a 400-500k light at 5m. So I’m sure reflected light, etc. can make a difference too.
And yeah I’m thinking 10-15m would be a little better for measuring this 400k + light.
Irregardless, your numbers are outstanding. And I’m sure you’ve sqeaked all there to be had out of this light. You have created another beast!