WTS/GB: [4000k ARRIVED, Test Report's In] GT-FC40 (a.k.a. XHP70's flattop, 12v 40w sister) 95 CRI, Available in 4000k, 5000k

I think they are one and the same as this 40W emitter, and I remembered they even listed 60w with the same number of die and footprint (also with less lm/w, which confirms my suspicion).

As Djozz have tested, these “40w” parts could easily be run at 60w (as long as you can cool it), and might even survive a brief period (minutes) of 100w without degradation.

I see…but why have different model numbers? Pure marketing “We have a model tailored to your needs”?
That’s very possible but maybe it would be good to ask for clarification?

If anyone wants to sell me one of their unused ones PM me.

D80v2 with GT-FC40 4000K and 20mm MTN-BST3 driver, reamed reflector (probably more than necessary)

High (stock lens)
High (with diffused lens)

Need another one of these.

Shipping combined wither COB order

Has anyone tried this emitter with convoy 22mm 1 Cell 2.3A boost driver?

Or which driver for best performance?

Thinking of building either a M21C or manta ray C8.2

I did tried that exact same convoy driver at some point on C8.2, though the stock host doesn’t give good enough contact and I can’t go into turbo as a result.

I did later try to bypass the terminals with solder braid. With Liitokala 5000mAH, it worked when fully charged, but will drop out of turbo on 50-75% SoC. After a while, I recklessly try to go into turbo repeatedly and probably eventually killed the driver with the transient after 100th attempt or so. To sum it up, if I want to use that driver again, I will probably need a higher drain battery or better bypass mod. Handling 10+ amps from a single cell is no joke here.

Alternatively, there’s a GB attempt by nzoomed. It’s a driver that could potentially drive the emitter at 50W out of single cell.

Got another GT and straight mod exactly.

Convoy M21C with Convoy XHP35 driver and FC40 paired with Convoy OP reflector.

Bloody awesome!!


Are these still available?

L - FC40

R - Stock XHP70.2 5000K

Still have a fair bit left, interested?

I am interested.

Does it work with H2-C?

Yes, it does work with H2-C.

As always, you may need to bypass your host’s terminal to reduce contact resistance.

Lumintop GT3 would make a nice host for GT-FC40:

12V TA driver stock…

Though a little expensive.

Ouch...

I'd rather go with Convoy M21C-U and ask Hank from Intl-Outdoor to buy K1 12V driver if ramping is desirable.

Or as i did, M21C host, Convoy XHP35 driver and FC40 paired together in an awesome combo.

Naiv question: The R50 pro only uses 6V XHP70, correct? I imagine a domeless LED would give it the missing throw.

Don’t own the pro since it’s inferior in this regard, but if there was a nicely tinted, throwy LED, I’d be tempted.

GT-FC40 is 12V and if R50 is running on 12V then you could swap emitters without problems.

But if it's 6V then you won't light it up with FC40.

Unless you are talking about shaving the dome on the present LED installed in R50, then yes, you will get more throw

A4 bin 2x, A5 bin 1x.

In the event the A5 bin won’t become available for a long while, then A4 bin 3x.

Thanks to zak.wilson i have made another great host even better.

Thrunite T2 is now highly desirable item

I just realised i’m running out of FC’s O_O

Looks great.

I just want to mention that the glass lens on my T1 added arround 0.0020 duv, have you tried without the lens to see if there was any difference ?