Reusing Thorfire VG15S host

My Thorfire VG15S has died on me, it served me well since 2018. Now, what parts could I replace so I could revive it again? The led is 16mm I think, could I replace its LED with something like SST20 or SST40 and retain the driver? I would really like that it will have a long runtime even if not too bright.

TIA

It’s a great host, I put in mine 6v driver (19mm) and nichia 144A behind tir. Search “what did you mod today” thread for inspiration:-)

Thank you for your suggestion, I will try reading that thread but it is quite long and I may not really understand the terminologies used there. I am looking at the following 3 leds, which among them maybe the best option?


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Could always just buy an SFT40 LED on 16mm MPCB. Now would be the time to get one, they ran out quick last time.

AliExpress Link

There is no such thing as the best LED. It all depends on personal preferences.

LH351D is the floodiest, SST20 is the throwiest. SFT40 is more throwy than SST40.

SST20 (2700K and 4000K) have the highest CRI (~95). LH351D is high CRI (~90). The rest is lower than 70.

High CRI leds have lower lux than low CRI leds.

SFT40 6500K will be the brightest, then SST40, the least bright is SST20 2700K.

If you like 5000K and high CRI, then LH351D is the only option. If you want the brightest 5000K, then SST-40 is an answer. If you seek for throwy beam, go for SST-20.

Thank you so much, I really appreciate the info you are sharing! I actually like the default tint of the VG15S, I think my BLF A6 has a cooler white compared to it. I’d go for the LH351D then, I’ve got a C8 if I need a throw. Will the default driver work if I’ll only change the led? Sorry, I am really new to this.

According to this review max current in VG15S is a bit over 3A, so it’s perfect driver for LH351D. LH351D in FC11 current is 3.7A and here are some tests of the led also at 3A.