(Email is coming with tracking )Discussion Thread.-- 1st BLF Titanium flashlight with tritium.

[ChibiM]

still in the workshop?

[Gunga]

Looking forward to more pix. I’m cool with no copper fins etc myself. Just want to get this host out quickly instead of waiting months for updates. But that’s just me!

[ChibiM]

Hmm this is taking very long.. no updates yet?

No pictures?

My gut feeling says this isnt going to work out.

[DB_Custom (Dale)]

Dude, that’s the Sushi…. it’ll be fine, watch…

[ChibiM]

@DBCstm

Dude, that’s the Sushi… it’ll be fine, watch…

What Sushi? I only ate dead fish!

[DB_Custom (Dale)]

If the machinist that’s doing this hasn’t worked Titanium before, he’s got a bit of a learning curve in front of him. He’ll get it worked out and the light will end up fine.

[ChibiM]

@DBCstm

If the machinist that’s doing this hasn’t worked Titanium before, he’s got a bit of a learning curve in front of him. He’ll get it worked out and the light will end up fine.

so now you are saying that he abused the fish? And you are saying that the stuff I ate wasn`t sushi? hmm... I guess I will never trust machinists anymore.

[DB_Custom (Dale)]

No, he didn’t abuse the poor fish. Yes, the stuff you ate wasn’t Sushi. Maybe the machinist is not to be trusted, maybe he is, let’s see if he gets this Ti light right first…

And leave the Sake alone.

[DanielM]

@DBCstm

No, he didn’t abuse the poor fish. Yes, the stuff you ate wasn’t Sushi. Maybe the machinist is not to be trusted, maybe he is, let’s see if he gets this Ti light right first…

And leave the Saki alone.

Sake?

[DB_Custom (Dale)]

The gut feelings could be bad sushi or too much sake. (or a bad combination of both)

[DavidEF]

@DanielM

@DBCstm

No, he didn’t abuse the poor fish. Yes, the stuff you ate wasn’t Sushi. Maybe the machinist is not to be trusted, maybe he is, let’s see if he gets this Ti light right first…

And leave the Saki alone.

Sake?

Saki is the titanium version of Sake!

[DB_Custom (Dale)]

Well see, I always thought it was pronounced “Sa-kee” but now I find that it’s “Sah-keh” so that’s why I misspelled it. I guess if they put it in a Ti container instead of glass it could very well be Saki, or after the 3’rd or 4th round it could be almost anything you wanted it to be. Ask the machinist…

[DanielM]

Yeah, someone wake up the machinist, he’s kinda sleeping on the job.

[DavidEF]

@DanielM

Yeah, someone wake up the machinist, he’s kinda sleeping on the job.

Or maybe he had too much Saki!

[Ronin42]

@Ronin42

I propose we look into have the heads quotes out of Cu.

First thermodynamics, is complicated.

Second if we make the head out of copper the material cost should be lower then Ti and the difficulty in machining should be lower thus resulting in a lower net cost (we will need to see if the quote says the same thing?).

As this is a host the guts are on us and design should be standardized so commercially availible “guts/parts” fit. (my pitch is we look to RMM for help)

Thierd If you want an Alu head then just use the one off the (host used for the guts).

If we assume that the air absorbs heat at a constant rate then the hotter the head the better it will shed “heat” (choose your metric, calories, joules, BTU or Watts).

Links for thoes who want to do research.

Heat transfer coefficient
Heat transfer coefficient - Wikipedia

Heat sink
Heat sink - Wikipedia

“Heat transfer by radiation is a function of both the heat sink temperature, and the temperature of the surroundings that the heat sink is optically coupled with. When both of these temperatures are on the order of 0 °C to 100 °C, the contribution of radiation compared to convection is generally small, and this factor is often neglected. In this case, finned heat sinks operating in either natural-convection or forced-flow will not be affected significantly by surface emissivity.”

Emissivity
Emissivity - Wikipedia

$.02

And now back to our scheduled programing.

[viperbart]

@Ronin42

@Ronin42

I propose we look into have the heads quotes out of Cu.

First thermodynamics, is complicated.

Second if we make the head out of copper the material cost should be lower then Ti and the difficulty in machining should be lower thus resulting in a lower net cost (we will need to see if the quote says the same thing?).

As this is a host the guts are on us and design should be standardized so commercially availible “guts/parts” fit. (my pitch is we look to RMM for help)

Thierd If you want an Alu head then just use the one off the (host used for the guts).

If we assume that the air absorbs heat at a constant rate then the hotter the head the better it will shed “heat” (choose your metric, calories, joules, BTU or Watts).

Links for thoes who want to do research.

Heat transfer coefficient
Heat transfer coefficient - Wikipedia

Heat sink
Heat sink - Wikipedia

“Heat transfer by radiation is a function of both the heat sink temperature, and the temperature of the surroundings that the heat sink is optically coupled with. When both of these temperatures are on the order of 0 °C to 100 °C, the contribution of radiation compared to convection is generally small, and this factor is often neglected. In this case, finned heat sinks operating in either natural-convection or forced-flow will not be affected significantly by surface emissivity.”

Emissivity
Emissivity - Wikipedia

$.02

And now back to our scheduled programing.

May I add…

Thermal conductivity and resistivity

&

List of thermal conductivities

[ReyLight]

good information, thanks.

[ReyLight]

ok, no one?

[FmC]

@WWEFANS

ok, no one?

What’s the question?

Ahh - new photo’s in the OP.

You might want to change the title, & add a date.

[ReyLight]

@FmC

@WWEFANS

ok, no one?

What’s the question? Ahh - new photo’s in the OP. You might want to change the title, & add a date.

Thanks. will do.