[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

[Enderman]

Thanks

[MortyDuck]

@thijsco19

@MortyDuck

Would be interesting to se the weight difference, and also the efficency difference to be calculated.
Even to see so renders side by side with these numbers would be very interesting!

Morten

Difference for reflector height for my model:
Weight with 112mm reflector: 1736 grams
Center of mass:

Weight with 90mm reflector: 1547 grams.
Center of mass:

Awsome! Thanks for calculating that!! …
and it shows that a deeper reflector doesn`t add that much weight…
I truly mean we should go for a “knock out” on the current “thrower-king”! :+1:

@Jerommel

@MortyDuck

Thought we where building the Giga Thrower??

120mm diameter reflector makes it giga either way.

If I had to deside….I would have build it with the throw in mind, not the weight and the design…
( ± 500gram I wouldn`t care, andTN42 shows that the proportions of a 1:1 reflector actually looks great! IMHO)

But the GT has very different proportions than the TN42

Someone in this tread said: “We have to build this light around a reflector, and we don`t have that yet…”

When it`s 14% more efficient from 93 to 112mm deep reflector, why not??
Dedoming a XPH35 would gain about 20%, and why not??

14 + 20 = 34% more “power”!

Why not?? I don`t get it… IMHO.

Well, why do most throwers have 4:5 or 3:4 proportioned reflectors, and usually not 1:1 ?
The deeper the reflector, the narrower its base, plus it adds considerable size and weight.
It’s a tough call…

Why don`t take the thrower throne with a GIGA leap then!?

And the TN42 has a propotion of 1:1 in reflector measurement, so why don`t follow up, but just make it bigger?
I belive that 1:1 measure is what it takes to make it a winner, as the TN42 right now.

Would be nice whit a test setup whit specified LED and reflector! Just to see the output and actual numbers. Even a 4:3 reflector with specified LED would be interesting to see in such a test.

And for the measures: The GT will be big anyway, so why not make it that GT we dream about?
thijsco just showed that weight wouldn`t be an issue with that +–200grams.

Are we just playing around or do we go all inn? Come on mr.J… hehehe

[MortyDuck]

@Enderman

-diminishing returns
-constant 120mm diameter

If we see just on this digram, 120mm in depth seem to be a pretty number… 80% light collected!!

@Enderman

Here is depth vs front area, which is what easyB claims is proportional to the beam intensity (lux)

I don’t have any math to back that up, but it does make logical sense, so at least it is an estimate.
Here you can see that the diminishing returns of lux come faster than in the previous graph.
This also makes sense, because the additional lumens collected will have more spread when they are collected nearer to the LED, so that contributes less to lux.

Im sorry but it seem to a bit of that last diagram…
A = π · r · r = 60mm · 60mm · π = 11.309,74 mm2 (I`m not trying to teach you math, because I know you are the king in that )

In this picture, upper right, you will see the same number as I have shown…

Anyway: I like your work, and it shows us some facts to consider in this build! NICE!

[Enderman]

@MortyDuck

Im sorry but it seem to a bit of that last diagram…
A = π · r · r = 60mm · 60mm · π = 11.309,74 mm2 (I`m not trying to teach you math, because I know you are the king in that )

In this picture, upper right, you will see the same number as I have shown…

Anyway: I like your work, and it shows us some facts to consider in this build! NICE!

You forgot to subtract the area of the circle formed by the focal plane of the reflector.
Everything below the focal point does absolutely nothing to the beam since it does not reflect the LED.
So basically take your pi*60^2 and subtract pi*bottom hole radius^2.
The deeper the reflector is the smaller the bottom circle becomes.
See [PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping. - #1791 by Enderman for referece.

[MortyDuck]

@Enderman

@MortyDuck

Im sorry but it seem to a bit of that last diagram…
A = π · r · r = 60mm · 60mm · π = 11.309,74 mm2 (I`m not trying to teach you math, because I know you are the king in that )

In this picture, upper right, you will see the same number as I have shown…

Anyway: I like your work, and it shows us some facts to consider in this build! NICE!

You forgot to subtract the area of the circle formed by the focal plane of the reflector.
Everything below the focal point does absolutely nothing to the beam since it does not reflect the LED.
So basically take your pi*60^2 and subtract pi*bottom hole radius^2.
The deeper the reflector is the smaller the bottom circle becomes.
See [PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping. - #1791 by Enderman for referece.

Ahhh…….
I tought is was a bit odd that you didn`t do it right with an equation, an I should have trusted my gut-feeling for that! hahaha :person_facepalming:

…I`ll never doubt your math again, never ever again!! lol :innocent:

[Enderman]

@MortyDuck

Ahhh…….
I tought is was a bit odd that you didn`t do it right with an equation, an I should have trusted my gut-feeling for that! hahaha :person_facepalming:

…I`ll never doubt your math again, never ever again!! lol :innocent:

Haha it’s ok, always good to have people question you because that’s usually how you catch mistakes or learn new things.

[The_Miller]

@Enderman

@MortyDuck

Ahhh…….
I tought is was a bit odd that you didn`t do it right with an equation, an I should have trusted my gut-feeling for that! hahaha :person_facepalming:

…I`ll never doubt your math again, never ever again!! lol :innocent:

Haha it’s ok, always good to have people question you because that’s usually how you catch mistakes or learn new things.

:+1: NICE!

Poll a bit depayed due to some time needed for completion of certain designs.

[Jerommel]

@Enderman

@Jerommel

Does the green line represent a 1:1 reflector, or…?

120mm diameter, depth is the X axis.
You can calculate the ratio yourself if you like

But it doesn’t say anything about the focussing of the ‘corona’.

[MortyDuck]

I don`t care about x and y usually, but in this tread I have been “addicted”! …and my wife shakes her head at all this… LOL

But for some reason ther hasn`t been any pictures of the actual difference from deep vs. shallow reflectors…like something everybody can see, and understand…

So I found this:

@MRTdiver

@JamesB

Deep reflectors usually gives you a brighter and narrower spill (better than a wider dimmer spill in my book).

Yeah. Here are some pics. Standard Maglite reflector with Rebel reflector on the Right…

What do other in this tread think about this image?

[Jerommel]

Interesting.
The shallow one seems to have a denser hotspot, probably because it’s wider at the base.

[mdeni]

The spill is more powerful.

[CheapThrills]

@Enderman

@Koenta

Very nice made

Some TN42 measurements

Thanks those will be useful!

My VPN blocked me opening that link as it has been reported hazardous… :confounded:
…service worth every penny… :partying_face:

[The_Miller]

will make a beamshot for Uking review (I modded it with the good parts of a kronos X5)
Sigh I thought the review was ready, but indeed a good chance to show some impact of reflectors
I will take comparing pics of 4 lights with the same driver/led/tail switch combo in different housings:
All good stuff of kronos X5/X6 (XPLhi/driver/lighted tail)
Convoy C8 OP reflector
Uking
kronos X6 (waits for taking the good stuff out to be placed n a nice host)
Atrolux X5 counterpart (this will be another cell but hey.

[LEDtec]

I am in for one.

[MortyDuck]

@The Miller

will make a beamshot for Uking review (I modded it with the good parts of a kronos X5)
Sigh I thought the review was ready, but indeed a good chance to show some impact of reflectors
I will take comparing pics of 4 lights with the same driver/led/tail switch combo in different housings:
All good stuff of kronos X5/X6 (XPLhi/driver/lighted tail)
Convoy C8 OP reflector
Uking
kronos X6 (waits for taking the good stuff out to be placed n a nice host)
Atrolux X5 counterpart (this will be another cell but hey.

Looking forward to it! :+1:

[Enderman]

@Jerommel

But it doesn’t say anything about the focussing of the ‘corona’.

My assumption is that the closer the reflector is to the LED, the more spread there is and the less it contributes to throw.
EasyB’s claim is that the throw/lux is proportional to the front area.
If you combine the two, it actually makes sense because the closer the reflector is to the LED the less area there is reflecting the LED, which in turn offers less improvement to throw/lux.
So basically increasing the depth will increase the amount of light collected, but the amount of throw/lux will look similar to graph #2 where it showed the area.

No it doesn’t say anything about how large the corona is or hotspot is, but it does show that the “diminishing returns” come sooner for lux than it does for lumens.

[5ar]

Click on the image to view full resolution

5ar design v0.6

I hope you like it, tomorrow I will publish photorealistic renderings.

[unknown00101]

That’s incredible 5ar.

[MortyDuck]

Awsome 5ar!!

[Sukoi]

Should i say WOW!!!

I WANT IT!