TISvn & MaratacVN - Brightest & Most Advanced Keychain Light

[robert.t]

Re: TISvn - Brightest & Most Advanced Keychain Light

More surprises: ...and Plutonium is *terrible*, at 4.6.

I can think of several more problems with that than poor thermal conductivity.

 

[mellowhead]

Re: TISvn - Brightest & Most Advanced Keychain Light

I can think of several more problems with that than poor thermal conductivity.

Problems like these?

(Oh, and it weighs a ton, costs a million, and is lethally radioactive).

 

[Tacitus]

Re: TISvn - Brightest & Most Advanced Keychain Light

You know, I thought SS was better, but apparently only some alloys are. Some are not. I just looked up thermal conductivity numbers for some common metals, and I'll report them as relative numbers--the units don't matter for getting the comparisons.

Silver won outright, of course, at 235.
Copper 223.
Aluminum 118.
Titanium 11-13
Stainless 7-26.

I assume they are reporting ranges for those two because there are so many recipes.

So I'm surprised! Depending on the composition, SS can be worse than Titanium!

More surprises: Tungsten is actually a pretty good conductor, at 94-100, and Plutonium is *terrible*, at 4.6.

Hey Mr. Nguyen--cancel that Plutonium light I ordered from you--the heat-management is terrible!

(Oh, and it weighs a ton, costs a million, and is lethally radioactive).

But keep working on the Tungsten light--great heat-management, and I don't have to add an after-market window-breaker to it. Whole light is window-breaker!

(Figures from here: http://www.engineeringtoolbox.com/thermal-conductivity-metals-d_858.html)

Maybe Vinh could try some Depleted Uranium (D-38). It's 68.4% denser than lead and it is only weakly radioactive because of its long radioactive half-life of 4.468 billion years! :laughing:

 

[Skylumen]

Re: TISvn - Brightest & Most Advanced Keychain Light

These take forever to build!!! Shipping 1st 5 tomorrow

 

[rjking]

Re: TISvn - Brightest & Most Advanced Keychain Light

Yes!:twothumbs

 

[Skylumen]

Re: TISvn - Brightest & Most Advanced Keychain Light

Please be extra patient with this one. Next 5 will take some time to crank. I have to modify everything. Focus body length circuit fitment cosmetic centering

 

[archimedes]

Re: TISvn - Brightest & Most Advanced Keychain Light

....
More surprises: Tungsten is actually a pretty good conductor .... keep working on the Tungsten light...

There have been a few flashlights made of tungsten around here (CPF) ....

 

[Tacitus]

Re: TISvn - Brightest & Most Advanced Keychain Light

If this is copper, then I'll take...
MaratacVN
XPL 6500K
A)+ $55 DriverVN Max brightness + Copper Heat sink base + PermanentArctic Silver Bond + Beam Tuning
B)+ $5 for "V54" Engraved

Thank you!!

 

[craziplaya21]

Re: TISvn - Brightest & Most Advanced Keychain Light

What the hell, a copper version? I'm in!:

$70 MaratacVN
XPL 5000K
A)+ $55 DriverVN Max brightness + Copper Heat sink base + PermanentArctic Silver Bond + Beam Tuning
B)+ $5 for "V54" Engraved

 

[rjking]

Re: TISvn - Brightest & Most Advanced Keychain Light

for 1 MaratacVn

 

[Skylumen]

Re: TISvn - Brightest & Most Advanced Keychain Light

Just a heads up. Polished Cu scratches very easily so your light have have soem scraches while mod handling . The stainless version is ultra tough.

 

[craziplaya21]

Re: TISvn - Brightest & Most Advanced Keychain Light

Just a heads up. Polished Cu scratches very easily so your light have have soem scraches while mod handling . The stainless version is ultra tough.

Probably an obvious answer, but would you suggest sandblasting it then, to make scratches less visible?

edit: nvm, I'll just live with the scratches. It adds character

 

[Skylumen]

Re: TISvn - Brightest & Most Advanced Keychain Light

Probably an obvious answer, but would you suggest sandblasting it then, to make scratches less visible?

edit: nvm, I'll just live with the scratches. It adds character

Agree!

 

[th8tredude]

Okay, now I need a Cu one too. Put me down for 1 MaratacVN XPL 5000K, options A&B $130. PP incoming...

 

[tino79]

Stainless Steel is more bad in getting heat away than copper, this we all know. But do you know how much would be the difference between the two lights? How fast de TiSvn gets hot? And the Maratac? Or do you have lumen and temperature readings of both at the beginning, after a while and after a longer time?

 

[mellowhead]

Stainless Steel is more bad in getting heat away than copper, this we all know. But do you know how much would be the difference between the two lights? How fast de TiSvn gets hot? And the Maratac? Or do you have lumen and temperature readings of both at the beginning, after a while and after a longer time?

Would probably need to wait for someone to review it thoroughly (like Selfbuilt) to get these measurements.

 

[Skylumen]

Would probably need to wait for someone to review it thoroughly (like Selfbuilt) to get these measurements.

+1

 

[rjking]

Hi Vinh

Any approximate lumen count or max output for the nichia?

 

[Skylumen]

Hi Vinh

Any approximate lumen count or max output for the nichia?

Wild guess here

219 is not an option with DriverVN. These LED can't the heat and draw.

 

[rumack]

These look sweet, Vinh. I love the idea of a nice programmable driver in a Maratac host.

If I go with Option A to get DriverVN, will the light still work with eneloops also, just at reduced outputs for each mode, or is it then li-ion only?

Have you tried sand blasting one of the copper Maratacs?