Hope they get a discount code, how about a Ti version of the D1?

Dont think titanium fits this flashlight, sorry.

saypat wrote:

the D1 is probably next up for Ti. The D4 is $80 for raw Ti with 18650 tube and Nichia. Everything else adds $. Who wouldn't want a gaggle these beauties?

Group buy maybe?
98$ for 4k version not anodized is lot of money

I like it, but i’m still not convinced enough to buy one due to the price

I’m waiting for the D7! lets see how it come out.

D4 with copper head and black 18650 body would be nice
titanium makes no sense as its not good for high power lights
aluminum can get at least some of the heat away from the copper head

Is it me or titanium just doesn’t make sense in this configuration? Physically and performance wise!
Apart from arguable fancy appearance of colour choices (I don’t think any of this colours matches copper. Maybe with forced patina? CRX will understand me, probably )
Intead of titanium I would love to see aluminium tube, tailcap and bezel with copper “engine” for a bit more price over standard D4 or for 80-90$ offering full copper. That would be step forward.
Titanium is heavier than aluminium, it has poor thermal conductivity compared to copper and ridiculously high electrical resistance compared to copper, aluminium and their alloys which leads to lower amps which might be desirable considering thermal downgrade of body but who wants to compensate all this for a double price of standard model is boggling my mind.
Maybe I am just too harsh or plain stupid?

I personally want one, I want the natural titanium one. But the cost is out of my range.
I don’t mind losing a couple hundred lumens to have the titanium. But the increase in cost is just to substantial…
I can buy an armytek or other larger name brand that is built to swim with and handle the recoil on a .12 gauge for this price.

this could be what the S42/E14 II promised….

butt the Ti puts it out of budget range (that’s 2 Q8’s) and performance suffers against al/cu

I’m in for copper or aluminum body w/copper head

(weight is relative to satisfaction)

The copper and titanium version isn’t for performance … it’s for BLING!

For flashlight use, aluminum is by far the best material. The aluminum version of the D4 is half the weight of the copper-titanium version. And think about how the copper head on the new D4 will work? … it will get burning hot within seconds, including the critical area right around the button. It will probably be necessary to set the temp stepdown to a lower temp in this version than with the aluminum version.

So why do people like copper and titanium so much? one word: BLING. It looks cool and a bit unique even though it’s much less practical.

Love the look! all my lights are black with a few SS ones. this is a welcome change… very nice.

The titanium is not the best conductor of heat so on a hot build with that driver the guts can get very hot very quickly

firedome wrote:

The titanium is not the best conductor of heat so on a hot build with that driver the guts can get very hot very quickly

Aluminum is way worse than Copper, the “numbers” suggest.
Yet, DTP Aluminum vs DTP Copper barely any difference in real life tests

I would like to see a test with a D4 vs D4Ti in 18350 and the same LED type, with both flashlights configured thermally at the same level before the test (as there seems to be great significance in how the MCUs read the temperature by default), that shows the D4Ti is significantly worse than aluminum, to the same magnitude of difference as the “numbers” suggest.

Some of us are trying to apply logic and reason, to a light that is purely an emotional buy.

there is no practical reason for a light that can get so hot it burns your hand, but people flock to buy multiple D4 lights

there is no practical reason for a light that is capable of thousands of lumens, but cannot maintain more than 500 for any amount of time, but people flock to buy multiple D4 lights

there is no practical reason for a light with a ramping interface that has no discrete, repeatable, lumen levels.. but.. D4 buyers flock like lemmings to the sea

there is no practical reason for a light that can drain an 18650 in 10 minutes, but that has not stopped the D4 from being purchased in higher numbers than any other light on BLF

the benefit of a Titanium body is that it insulates the hand from excess heat, except that using the switch to turn it off will lead to some heat shock from touching the copper head

then there is the PWM above 150 lumens, but who cares, regulation is overrated

Buy the D4 not because it makes sense, buy it because everybody knows it is the Hot Ticket

Firelight2 wrote:

The copper and titanium version isn’t for performance … it’s for BLING!

For flashlight use, aluminum is by far the best material. The aluminum version of the D4 is half the weight of the copper-titanium version. And think about how the copper head on the new D4 will work? … it will get burning hot within seconds, including the critical area right around the button. It will probably be necessary to set the temp stepdown to a lower temp in this version than with the aluminum version.

So why do people like copper and titanium so much? one word: BLING. It looks cool and a bit unique even though it’s much less practical.

Absolutely agreed.

If there were no black aluminum version many of us would be asking for one.

jon_slider wrote:

Some of us are trying to apply logic and reason, to a light that is purely an emotional buy.

there is no practical reason for a light that can get so hot it burns your hand, but people flock to buy multiple D4 lights

there is no practical reason for a light that is capable of thousands of lumens, but cannot maintain more than 500 for any amount of time, but people flock to buy multiple D4 lights

there is no practical reason for a light with a ramping interface that has no discrete, repeatable, lumen levels.. but.. D4 buyers flock like lemmings to the sea

there is no practical reason for a light that can drain an 18650 in 10 minutes, but that has not stopped the D4 from being purchased in higher numbers than any other light on BLF

the benefit of a Titanium body is that it insulates the hand from excess heat, except that using the switch to turn it off will lead to some heat shock from touching the copper head

then there is the PWM above 150 lumens, but who cares, regulation is overrated

Buy the D4 not because it makes sense, buy it because everybody knows it is the Hot Ticket

Stated perfectly. I bought these for that pretty little hot rod they are. Copper head improved performance, but really how much being so small. These lights I got for it’s Lego ability, bling and being the latest in geek art. Now if they sold as a la carte I’d be even poorer.

texas shooter wrote:

…Copper head improved performance, but really how much being so small.

• Copper conducts heat better and the copper head will get burning hot considerably faster. Copper can also store more heat so it will get and stay hotter than anodized aluminum.
• Shiny copper and titanium has lower emissivity than anodized aluminum so isn’t as good at radiating the heat to atmosphere.
• The titanium around the head also won’t help. Titanium is a poor conductor of heat and won’t do a good job at wicking heat away from the head. This is unlike the aluminum version whose body tubes are quite thick and do a good job absorbing some of the heat. In the titanium D4, even more heat will stay concentrated in the head, rather than being distributed throughout the light.

End result will most likely be the user will have to keep the temperature sensor set to a lower temperature in the titanium version than in the aluminum version to avoid unwanted burns when trying to activate the button.

The titanium tubes will also help a bit to stop the cells being cooked from the inside and out
I’m just dreading doing all the D4 mods again to a ti version

I was expecting those Ti D4 since someone posted pictures a few weeks ago… but i’m quite disappointed.

The only one that appeals to me is the raw Ti, but with XPL and 18350 tube it sums up to almost $110. Way too expensive IMO. That’s a few dollars short of what i paid for the GT (first 555).

The colored ones are awful to my taste. None do match the copper head (maybe the C washed out purple one…) and seem to have been ‘designed’ by a color blind person… Not mentioning the $15 premium.

Not the best move by Hank IMO.

I would rather be interested in a copper head and aluminum body (bare or anodized) version if the price is right.

One of our fav lights of 2017 the D4 now has a ti flavour available…………..whats not to like. The D4 is a crazy fun light, great UI with pretty much some of the better LED and colour temp options to suit most. I have noticed over the years, fav lights(well so to speak) people tend to want a ti version, be it the more expensive BOSS or limited RA HDS ti. Now a D4ti imo is pretty awesome, who cares if you get 8s of 3500lm instead of 15s(example) of……………..its ti. Can be polished, other advantages like being very resistant to chemicals along with looking cool! Also i hate lots of chips and dings in ano, lights can soon look scruffy, ti/stainless holds up better and i prefer these options for certain flashlight applications.

I can not think of a quad(or triple, think $700+ on the stunning ti BOSS here) for around $100 give/take………….in the scheme its a bargain. I like the raw and will be adding it to my D4 family at some point. Not over keen on the coloured ones………..subjective.

Hikelite wrote:

firedome wrote:

The titanium is not the best conductor of heat so on a hot build with that driver the guts can get very hot very quickly

Aluminum is way worse than Copper, the “numbers” suggest.
Yet, DTP Aluminum vs DTP Copper barely any difference in real life tests

I would like to see a test with a D4 vs D4Ti in 18350 and the same LED type, with both flashlights configured thermally at the same level before the test (as there seems to be great significance in how the MCUs read the temperature by default), that shows the D4Ti is significantly worse than aluminum, to the same magnitude of difference as the “numbers” suggest.

I’d rather want to see a test rather than predictions, like the statement the driver will die, which is an invalid statement considering there is a thermal function implemented in the first place.

preditions & thermal ratings versus reality

The best MCPCB does not help if the lights body does not conduct heat well, copper head is good, but titanium sucks

I am in the market for a new edc and that ti raw finish looks so nice.
But will it be brighter than my convoy s2+ 2800 mah when run for more than a few minutes straight? Or will it dim down and not give me the output I would like

Lexel wrote:

The best MCPCB does not help if the lights body does not conduct heat well, copper head is good, but titanium sucks

Jerommel wrote:

Lexel wrote:

The best MCPCB does not help if the lights body does not conduct heat well, copper head is good, but titanium sucks

Would be nice if the copper head was sold separately.

my best guess would be copper head, aluminum Tube and bezel and titanium tail cap

I disagree with firedome comment. It is the best