NEW TrustFire TR-DF003 2x26650 3xCREE XM-L Diving Light

Head shave done.
Removed spring and used a 25 mm brass car wash token. Highly polished with a 8/32x1/2” SS machine thread bolt with head cut off back of token and threaded through coin. Amazingly THE COIN FIT EXACT IN THE TAIL CAP. I have 4 coins left if anyone needs one. 24.99 mm exactly if you have stock. It was a 1/2”long bolt so I had some adjusting to do. I found I could use a punch to expand coin at edges, and it held it in tight because of close tolerances… Tested in tub and works great!!!
BUT I WANT TO GIVE DEEPDAWG A HUGE THANK YOU!!! for giving us all a heads up and all the lengthy details needed to do this. Kudos!!! :slight_smile: :slight_smile: :bigsmile:
Daniel

Winmag,

Good job on cleaning those once-seized forward threads and on prepping the handle for a shaved head ring mate. I haven’t seen what you’ve done to the head but I’ll assume it looks like nice flat bare shaved metal on the bottom contact ring.

No. The head shave mod will stop it from happening AGAIN when you attain depth. It’s pressure that helps those head-threads fail as a ground contact. But the pressure only helps them fail. The fact that they are threads, they are aluminum and they are oxidized are the real culprits.

Changing modes in the shallows is a result of aquatic grounding from tail to head. Also very bad for the drivers and probably what killed yours.

Sorry your lights self-destructed before I could post these mods. And I’m also sorry to tell you this, but the Tail Spring Mod is actually the most important one because the tail threads WILL LOSE THEIR ANODIZING. I’m sure yours already have. And once they do, your light will try to come on as long as that spring is touching your battery chain. It won’t even matter if it’s in the water. The only way to stop it will be to remove the tail cap so the spring can’t touch the batteries.

If I could finger the single biggest design flaw of this light, it would have to be its dependence on the black anodizing on the tail threads to insulate the tail cap from the handle when the tail is slightly unscrewed. Yep, that is the number one dumbest thing I’ve seen in at least a month.

Imagine the stupidity of a design engineer thinking that they could completely and forever insulate one side of a frequent-use threaded metal union from the other by simply anodizing it.

Look at the picture of the tail threads on my used light. They’re now completely bare of even any residue from the original anodizing. I didn’t strip them, I just used the light and as the designers intended, I had to screw down and unscrew the tail-cap at least five times for each dive:

1-Once off to load batteries in it.
2-Once on (a bit) to drive to the dive site.
3-Once all the way down before the light can get anywhere near water. Then do your dive.
4-Once off (at least partly) when out of the water to rinse
5-Once off again to unload the batteries

So for one dive, that’s at least five times of screwing the tail cap threads. And with those original o-rings, they would be mincemeat after one dive.

That anodizing never stood a chance of staying on those threads.

A close second on the dumbest engineering I’ve ever seen is the design assumption that the light would NEVER GET BUMPED and therefore never see a breach in the body’s anodizing thus never short from external sources.

And if Trustfire has a Q.C. department (doubtful) it’s amazingly reckless to go to market when you have not tested in seawater a FREAKING DIVE LIGHT!!!

It looks from your beam shots like you still have function in all three emitters of at least one light.

For you to buy two more of these lights would be to encourage such poor designers and executives. We have plenty of idiots and crooks without rewarding the hiring of more, even overseas. What if you buying two more of these means they will actually manufacture two more of these boat anchors?

The lights you really want are something like the X-Beam U2X3 or the XTAR D35 and they will likely keep dropping in price. We just need to wait for even better pricing.

Hang in there buddy, I think you’ll have at least one of these working right for Mexico.

When is your trip and where do you dive out of?

Dawg

Yeah I got to admit the workmanship and engineering of this light is TERRIBLE.!!! I would think they would of at least tested it. Fortunately we have a fix for some, maybe not all, whom can actually enjoy it for a while before it blows up.

Bravo Daniel and you’re very welcome!

I’d like to see a picture because I also tried a contact with a threaded union in it and still had ground loss troubles. But come to think of it, that was before I did the head shave mod so it may have been that instead an intermittent break within my battery contact and my contact has never been all that tight against the inner tail.

And as I’ve mentioned, I’m not super happy with my plastic retainer and it sounds like your hammered token fits much tighter against the bare aluminum inner cap. I may well just size a stainless circlip to fit in the grove that once held the spring. Then I could create serious pressure to hold the contact base against the inner tail. I’ll post pics if I do.

For sure what I originally tried to make, was a battery contact that was height adjustable with threading but I am fairly sure depending on conduction through yet another threaded union within the battery contact is too risky with these currents. That’s why my current contact components are all soldered together.

MAYBE copper threading with my copper conductive grease would be a safe bet if combined with a high pressure fit against the inner tail cap using a circlip. As I said, I’ll post pics if I do it.

I have been so surprised at how different things go 12 minutes into a dive than they do on the surface.

Good luck with your fix and I hope all goes well!

Looking good Daniel!

Everything looks held tight. Perhaps not too removable but it looks like a good fit.

Screw is about 1/2-inch so I’m guessing you’re using 18650’s.

And I trust it is bumping to the next mode for you while the tail is screwed down tight and also cutting power within o-ring seal range (unscrewed about two rotations out)?

Thanks for sharing and show us underwater pics and video!! 8)

Actually I needed to cut it way down for the 26650’s Rotations and cutting power all working PRIMO! And I love the BUMP!! :bigsmile: :wink:
And I DO KNOW WHAT THE B MEANS BY NOW!!

That’s excellent news. Great work!

Ah yes, the cry of the frequent BLF poster!

It looks like I got an “L” this time. :bigsmile:

Dawg

Deepdawg,

We are leaving on March 27 and staying till April 10. We’re all staying withing walking distance of central Playa Del Carmen as we always use Steve the owner of Reef Quest Divers as our guide. Dudes got skill and he’s a great guy to dive with. I find it hard to put trust in most instructors but I have nothing to worry about with him.

All the reviews I’ve seen of this light in the past 6 months say its putting out 1300 to 1500 lumens… That Xtar D35 puts out 2300 lumens, unfortunately it runs on 18650s but If I find out I can take out the refector and use it for a video light I just might buy 2.
Thanx for the heads up Deepdawg! I will continue moding this when I get home tonight.

That X-Beam looks good but the exaggeration of lumens reminds me of this light lol. I have a feeling it will bring problems as well.
But it does take 26650s!!! Your right about both these lights needing to come down in price, thats a lot of money for cheap Chinese lights.

That sounds like a great trip. You’re lucky indeed to have the same person living down there that you can count on.

Yeah, I just list them because, for now, they are the only triple CREE hand-held dive lights with magnetic switching that I’m finding for reasonable pricing. Most reading this forum know the realities of output. But even in parallel, three CREE T6’s aren’t bad. And mark my words; whether it’s by the original manufacturers or not, the price on those designs will be dropping plus newer designs will start crowding the market to also help drive prices down.

And I agree on quality question for the X-BEAM since I think the same parent company (Shenzhen) makes Trustfire.

But even knowing how to fix our TuRDs I can’t in good conscience recommend that someone actually pay for a new one just to invest hours and more money into making it work. Life’s too short, our time is worth something.

It’s 2013, there is no excuse technologically or economically for producing such a crappy product. I’d like to see a detailed review on the X-BEAM U2X3 pulled apart to see how easy it will be to replace o-rings and such and also to get a reality reading on output. Every import dive light I’ve bought has benefited from resizing and/or improving the o-rings. Once that’s done, they’ve been great with our one obvious exception.

Dawg

Shaved head is done…

This is what I’m using for my “Bump Gun”…

Now before I go ahead and start cutting I need to know what size to start off with.
I am using the 26650 batteries that came with the light.
From the bottom of the tail cap to the top of the bump gun what size are they?
I’m guessing the total height of my bump gun should be 1/2?
Should I start at 3/4 and work my way down?
I am going to solder all the way the way around the brass… ah crap I can’t solder to aluminum.

Edit: With nothing in the tail cap and no material in the head coil my batteries don’t even move, not even when I bump it.
I cut the bolt and made it 5/16, I put it in the tail cap and I can screw it almost all the way down. It turns on and turns off by moving the tail cap the last 1/8 of an inch lol. I could make the bolt longer but that is putting more pressure on the head screw so how am I supposed to bump the light?

Hey 300winmag. As for the height on mine I hardly have 1/4”. Not too sure if toilet flange bolt will stay put without retainer. You could do like Dawg and put in a SS Circlip to hold it. Mine I set with a punch and it rings tight. Makes a nice ping sound so I know its happy. Another nice thing about my coin trick is if I need to re-adjust I just unscrew the screw out of the brass coin or just grind it in place.

So far your handle and head shaves look good.

I suggest that you clean that contact ring on that inner tail cap where it meets the handle ring when the tail is screwed tight. It’s a critical ground contact point so I sanded mine and keep it clean.

Making the battery contact (I think you’re calling it a bump gun) is the trickiest part of this mod and will take some time because of the limited thread range that is within O-ring seal.

It’s SO important to hear your batteries begin to rattle with the tail unscrewed two-rotations from tight. If it’s beyond two rotations to rattle, then you risk losing o-ring seal when cutting power under water. What that really means is you will not be able to cut power in water. If power cuts too soon, then your spring won’t be tight enough when powered on and it will constantly change modes with the slightest bump. Pick good batteries because they will be matched to the battery contact insert you will make unless all your batteries are EXACTLY the same length.

That toilet bolt sure is long! I like the big flat head on it but you will only need, say, a 1/4-inch of total bolt length from the back of the head when combined with that brass back-plate I see next to it that you will solder it to. And even then you will be grinding it down as you fine-tune it.

And remember, something has to hold it very tight against the inner aluminum.

You might want to cut the bolt off before soldering it to that plate. It might be easier that way. I only had to pull about 1/16 off of the 1/4-inch brass screw I started with so my TOTAL battery contact height was about 1/4 –inch.

Either way, if you look at my third photo in post 223, you can see how far my batteries extend beyond the tail ring without compression. You can also see that it’s different for each of my lights!! So each light ended up with a different contact height. One battery contact is 0.26-inch and the other is 0.31-inch.

Since you know the end of the handle has to meet that bare metal inner tail cap ring. That will give you a starting point for total contact height. You just have to push on the batteries to see how far they’ll press into the handle and use that to figure how much room you have.

Or, you can practice by stacking more and more pennies in the tail cap until you finally can’t screw it down with batteries loaded. Then remove about three-pennies worth and the remaining stack of pennies should be pretty close to the contact height you want. PLEASE, PLEASE REMEMBER: TWO ROTATIONS OUT TO POWER OFF or two rotations to battery rattle.

If you have zero room as you suggest, it makes no sense since you’ve had batteries in there with a spring already. Even if you have odd-ball batteries, I don’t see how you ever loaded batteries when the spring was in if you can’t load them now. I edited it so it might help to re-read the tail cap mod section. Remember, total height of the battery contact will only be about 1/4 –inch with most 26650’s

Greetings fellow TuRD owners.

I’ve made another discovery and I’ve made a few more EDITS to my mod post (number 223) and sorry but they include a disclaimer that I should have put up originally and that most will laugh at but will understand nonetheless. As before I will leave the edits bold for a while.

I finally solved yet another P.I.T.A. mystery of our TR-DF003’s. I just discovered that the logic chip can make bump mode-changes tricky sometimes particularly when going from mode 5 (SOS) to mode 1 (HIGH).

Bumps work great going from mode 1 to 2 to 3 to 4. But I was noticing that when I got to mode 5, about half the time I would bump it and it would just stay in SOS mode, which has a strobe sequence with some very long OFF PHASES and makes you think your light is toast or something.

Well good news! If you are also noticing this, it is not a malfunction of the light nor a result of poor mod work.

What was happening is that half the time I was bumping it BETWEEN DOTS and DASHES of the “SOS” sequence (during OFF phases) and half the time I was bumping it DURING DOTS AND DASHES (during ON phases).

You can bump the heck out of it during an off phase of a slow strobe like SOS and it won’t change modes because to change modes, the logic chip needs the power cut for a duration that runs at least partly into an ON-PHASE. The original design assumed you would unscrew the tail and then re-screw it to change modes. That was a long power cut.

The power cut from a bump is quite short, so for the rapid strobe, a bump is usually a long enough power cut. But for the slow SOS mode, there are many long pauses between the letters and at the end of the SOS sequence. You can either try timing your bumps to catch it ON, or just keep bumping until you catch it on by accident. Obviously, it will be easiest to catch it during one of the 3 dashes of the “O”.

So again, if you’re also seeing this, it’s “normal” not a malfunction.

I cut the bolt down just after posting the pics yesterday and im not worried about holding it in place just yet. I want to get that contact the right size first. I will get rid of the anodizing on the tail and cap today too. Should be done today!!

Oh I went on fleabay and did a “make me an offer” on the Xrar D35. I offered him 425 for 2 big sets and he came back with 650 lol
650 for 2 cheap Chinese lights lol. Ah well dont hurt to ask.

Nice job on the bolt and nice try on the offer. Don’t give in.

I agree with you, that is WAY too much money for an internet purchase from a vendor overseas. These vendors need to realize they will never move much volume at those prices given the HUGE risk buyers are taking buying from some anonymous vendor in China. Case in point with our Trustfire TuRD’s.

Trustfire owes you AT LEAST one free light and they probably owe me that plus a royalty gratis for my fixes – LOL.

It looks like you’ve done a good job of getting at least one of your TR-DF003’s back on the road with my mods.

Is your other one really completely shot?

Can you team the rescued one with something reliable like this?

I’ve got one with a lens o-ring system I modded that I would now swear-by to 200 FSW, I LOVE the magnetic switching and amazingly, the HIGH mode feels like an honest 1000lm (not the 1600 claimed). It’s yours with batteries and a charger as modded for $55 if you want it. If you promised not to mess with the lens bezel, I’d even put a 30-day warranty on it and you’d probably have it in four business days. I’ve been seriously impressed with its performance and run-time. For a single 18650 T6, it just keeps running and running and it’s T6 has got a beam from heaven and it is SOOO compact and has plenty of low modes if you want to conserve battery until you’re ready to shoot.

The UK Light Cannon HID still retails at $300 each and during the holidays, I saw the Light Cannon eLED drop to $150 during a whopping sale event. At 800+ lumens, the eLED is nearly twice as bright as the HID and about half as bright as our TR-DF003 (when in HIGH and working.) I just think you can get so much more lumen these days with much smaller lights and I’ve never been a big fan of the eLED’s heat sink poking through the lens like that.

The D35 probably has the same output as the TuRD and the X-BEAM might be slightly brighter from what I’ve read about the U2’s. I prefer the X-BEAM only by design since it uses 26650’s and U2 emitters. But neither is an Underwater Kinetics product with the UK lifetime warranty, neither is made in the USA and neither is sold from a US vendor so I will need to see MUCH lower pricing on those before I’m willing to risk ending up with another TuRD.

UK is great, I’ve owned six of their models over the years and only once did I have a Light Cannon flood. I sent it too them with a letter and they sent it back with all new internals. What’s remarkable about every UK light I’ve owned, is that the batteries are loaded through the head using a SINGLE O-ring seal and when used properly, they very rarely flood. I’ve owned 2 Q40’s, 2 C8’s and 2 Cannon HID’s. People love them and for that reason I’ve been able sell every one of them except my last remaining HID Cannon (which I still Love).

I even considered mounting this triple CREE head from the TuRD into a customized UK C8 Sunlight chassis but I was too concerned about mounting that much heat potential into a plastic light housing because I would have powered it with the UK 12V rechargeable pack; too dangerous for my taste.

Another SAFE option is the TUSA TUL-1000 but at nearly $600, I must admit I’d rather have 2 D35’s or three X-BEAMS. Why? Because if you leave the TUSA TUL-1000 on high, your run-time is pretty short. They claim 60-minutes but it’s not holding full output for that much time. But if you leave it on a low mode until you’re ready to record, then that high setting is FANTASTIC even though it’s only 1000 lumen. But, like UK, I also love the TUSA warranty and support. I just don’t want to spend almost $600 on a 1,000 lumen light.

I have done everything and cant get the light to switch modes while bumping it. 2 rotations back and I get a rattle from the batteries so thats good. I tried putting 2 small pieces of vinyl in the head spring and using less or more. After bumping it the battery contact comes loose from the piece of plastic holding it down… grrrrr lol

Thinking about gluing the battery contact down by gluing the sides….

Sounds like my trial and error stage-LOL

Sorry for your frustration. I also spent quite a lot of time trimming the contact length to power off at precisely two rotations out.

Daniel’s is working because he worked with his contact height and then punched his contact into place to ensure a very tight press against the aluminum in the tail cap for excellent conductivity.

Winmag, I cannot adequately emphasize how important it is to get the exact height right on your contact. And also how important all of this ground contact conduction stuff is. With the currents used in these lights and the fact that you’re asking aluminum to pass current through pressed contact joints, you must keep every move you make very conductive.

I know it’s a long write-up and so it’s asking a lot, but if you really do everything as I lay it out, you will turn this P.O.S. into a good working light. I believe those toilet bolts are just coated steel.

Remember, I used only solid brass and copper components for my battery contact and even those are soldered together as one. And on top of that, I used the copper conductive grease where it meets the aluminum tail cap. You won’t need to do that if you can create a tight enough pressure when fixing your contact to the tail.

Keep on it and you’ll get it right.

No the bolts are brass all the way through.

I can get it to where when I bump it the light goes out for a split second but won’t switch modes.

Why the material in the head spring though?

I got my other light to work by replacing the driver so thats all good there just need to do these mods to it.

I though about putting this head into my UK D8 light but just as you though the plastic is worrisome.

I am going to send that retailer a reply to his $650 quote and explain to him our views lol.

Glad to hear it, that will help. You still have to solder any pieces as one and get good contact with the tail.

It’s either the recent discovery I just posted or your driver may have issues.

With my battery contact sized for two rotations out to cut power, my head spring was too soft and I still got too many accidental bumps. Anything to stiffen the head-spring and/or reduce its compression range will reduce accidental mode changes. It worked well for me.

Glad to hear. That’s how I did it. I perfected the first light and then it was smooth sailing to mod the brand new one as well. I must admit that having two of these working well is a formidable underwater light force.

True dat!

I wouldn’t bother. Once you get the second TuRD back on the road, you’ll be fine. Meanwhile, let the natural market forces drop prices. I promise they’ll fall.