Mod: (w Beamshots!) UltraFire T90 (TF X6 Clone), Cree MT-G2 Emitter Swap

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TheGloriousTachikoma
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Just checked tailcap current…3.25A… Oops

The clone uses this driver , even the same printing on the vertical PCB. So time for a resistor mod in the opposite manner as usual then? Big Smile I remember waaay back with the SST-90 it drew about 1.5A.

And I’d forgotten this thread, there’s so many X6 threads here… Sad I actually spent an hour making a pair of copper disks, soldering them together, and grinding them flat to space the emitter up against the reflector. I wanted to get the emitter as close to the opening of the reflector because of what you had said elsewhere, about the MT-G2 throwing more light sideways than the SST-90. But you placed the emitter right on the pill with no spacing? So on yours there’s a couple-mm gap between the reflector opening and the emitter?

Bigchelis
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Old thread but I figure I point out some relevant data for you.

This SST-90 based light appears to use the DX 7.3cm SMO SST-90 reflector which is what the Lamdalights Turbo lights used as well.

I actually use this DX SST-90 SMO reflector in a 80mm 109LED bezel from HF. My 2D MTG2 Maglite is direct drive off 2 IMR 26650 cells and does 5.14A at the tailcap. I get 102K lux with mine. Just epoxy the HF bezel on the 2D Mag and find the focus point and that’s pretty much it.

https://www.youtube.com/watch?v=C-yeh9IdvbY

So, I am generating 43watts plus with my MTG2 and it takes it like a champ on copper heatsink ect…

bigC

ImA4Wheelr
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That's a sweet light you made there Bigchelis. Looks real good.  Beefy side-switch MT-G2.  Me likey a lot.

102k lux, is that measured at or converted to 1 meter?  Just wondering what your throw is so I can add your light to my MT-G2 throw thread.  If it's 102kcd, that is very good for a domed MT-G2.  That does sound like a perfect beam in my book.

Bigchelis
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ImA4Wheelr wrote:

That’s a sweet light you made there Bigchelis. Looks real good.  Beefy side-switch MT-G2.  Me likey a lot.

102k lux, is that measured at or converted to 1 meter?  Just wondering what your throw is so I can add your light to my MT-G2 throw thread.  If it’s 102kcd, that is very good for a domed MT-G2.  That does sound like a perfect beam in my book.

Sorry, let me clarify…From my Lux and OTF lumen testing of years past I learned real quick that high lux lights cant be measured accurately at actual 1M. I found the sweet spot to be measuring at 5M and calculating back. So, all my measurements are always done at 5M.

Now the MTG2 I tested was dedomed but I have a 2nd one that is 100% identical heatsink, 2D Mag, MTG2 bin, ect….Same amps at tailcap and same IMR Cells to test. I will give you the calculated lux on that one later today but honestly I don’t expect it to be much less.

While horseback riding last night (yup at night). I noticed the MTG2 with the dome on and the big head actually looks significantly brighter despite all else being equal. But we all know how dedoming negatively affects OTF lumens I just didn’t expect to see the difference on a side by side basis. OH, well you live and you learn.

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