Tripple 219C S2+ - Heat management problem

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VaKo
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Tripple 219C S2+ - Heat management problem

I built my first triple using the following:

  • Nichia NVSW219CT R800 D260 Noctigon triple in parallel.
  • Convoy S2+, braided tailcap spring
  • LD2 driver, spring replaced with brass nipple
  • Solid copper pill from kiriba-ru

MCPCB has an adequate amount of Arctic Cooling MX4 thermal paste, and I’m using an LG HE4.

It’s a first attempt (first time I’ve done anything more exciting than swap a driver and MCPCB), and while it functions fine it does get incredibly hot after a minute or so on max, then the driver flashes and shuts off (which I understand is some sort of protection function). Does anyone have any suggestions for ways I might improve the heat management of this flashlight? I had considered using thermal paste on the threads in the head rather than silicon grease. Or swapping out the driver for something like the BLF A6 FET+7135 as my understanding is the Nichias work better with FET’s (something to do with forward voltage that I’m not sure about yet).

FmC
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The host is too small. It's as simple as that.

If you change to the FET/+7135 driver, it's going to get just as hot, just as fast, on full output.

Use a weaker cell &/or lower modes.

VaKo
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A shame, it is quite something at full tilt. A shame there isn’t a Convoy S8+ or parts for the M2/M1 to make a triple. As a concept it’s great, but in practice it seems hard to get the most out of one of these.

ReManG
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The 219Cs get hotter than XPG2s in my experience. Try a 8-12 × 7135 driver (3-4.5 A)or as FMC said, a lower output battery.

Firelight2
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Using a FET driver?

Replace the 219Cs with CREE XPL HI (I prefer 3D tint). The CREEs won’t pull as many amps so your light will be [slightly] cooler. In addition, your light will be considerably brighter than with the Nichia and will have more throw.