SBT90 G2 LED - The 2020 Thrower LED

[Kevin1322]

Seems most of the lights with this LED are 5700k. Do they make them whiter like 6500k? Does delensing them change to tint at all?

 

[Skylumen]

Seems most of the lights with this LED are 5700k. Do they make them whiter like 6500k? Does delensing them change to tint at all?

5700K is all I know of. Tint is very cool white on Turbo. So dont worry if you are a cool white fan.

 

[Patriot]

Any chance you might try it in a Thrunight Catapult V6???
Add some copper to manage the heat???
Anyone (looking at you Patriot - have any ideas on rough numbers regarding output and throw?
I think it would be a MUST HAVE if Vinh could get it to throw over 1000m...thoughts anyone?

Sure, put me on the spot, only to look silly later... haha!

Well, the 26650 should give a little better discharge performance than the 18650 but not quite as good as the 21700. The V6 has a double spring tailcap and a nice nickle plated forward contact so there doesn't appear that there would be higher than average resistance. Vinh might run a bypass on a SBT90 version, making things even better.

I'm tempted to compare the reflector with the K30GT because they're close in diameter. 49mm for the GT, 50mm for the V6. The only problem is that the GT has a much deeper reflector and a smoother, more reflective surface, therefore I don't think it's a good place to start.

Looking at specs sticker on the head of my TN42vn XHP HI CW, I measured it at 795 lux. Vinh's specs on his website show 775Kcd so let's use that. The TN42vn90 (CFT 90) can do 1.2Mcd. or about 36% more throw. The larger the reflector though, the more it gives the advantage to the SBT90G2, vs. the XHP, so I don't think we'll see a full 36% gain. Perhaps it could see a 30% gain? Also shallow reflectors don't see the same gains, all other things being equal so I'd subtract a few more percentage points...

I'll guess 4100L and 243Kcd for a CATvnV690

So yeah, basically awesome performance from a light that size. The only problem is that the K30GTvn would be it's main competition and it's only 24mm longer and 1mm smaller head. The Acebeam also drives the LED harder and has almost double the cell capacity if 35A cells are used in both lights.

 

[Dupree]

Wow thanks for the in-depth response Patriot, truly appreciate you taking the time to help.
Like you, I enjoy hiking at night and sometimes do short overnighters...Like you, I also wear a headlamp and carry a D4Svn V2 and a K30GT for when I need to see a bit further out (there are a lot of coyotes where I live and many times I've had to hit the strobe light to get them to steer clear of me and I prefer doing when they're 200 metres away and not 50 haha.

While I absolutely love the K30GT I'm always wondering if I can get the same performance in something smaller and lighter so as to eliminate much needed pack space and weight.
I know there isn't a huge difference in size/weight between the Catapult and K30GT but the Thrunite is physically smaller and added bonus is that it is powered by a 26650 like the D4Svn V2 thus eliminating the need to bring different battery sizes for spares...sorry for the long winded post -.

I just really like the range the K30GT provides in such a relatively small package...I mean I remember watching your videos when the first version of the TK75 debuted...2600 Lumens and 92,000 Kcd was so impressive back then...now thanks to Vinh and newer technology we can achieve even better numbers with our tiny D4Svn V2 haha.

What about White 2.1? Would it throw further than XHP35HI in the Catapult?

Again, forever grateful for all your help.

Cheers!

 

[Patriot]

...sorry for the long winded post -.

Man, are you kidding?! I absolutely loved your detailed post!! You're speaking my language and yes, it unbelievable to me that a TK75 is blown away by something like a D4SvnV2. It wouldn't have seemed real or possible to me if I could have traveled forward in time.

I think it's great that you enjoy similar outings and overnight trips and it goes so perfectly with this fun hobby. One of my regular hiking buddies commented on how much more fun the night hiking is when you have really capable lighting equipment. It just expands the night world so much. He's not nearly the flashlight maniac I am but it was great to hear his appreciation of it. Now he's always asking about night hiking because from the aspect of wildlife, we typically see more on night hikes that day hikes, which is really cool.

I definitely understand the lure of wanting to be able to use the same cell in more than one light but at the same time it probably restricts choices. On shorter hikes, perhaps 2-4 hours and then finishing back at the car, I've been ignoring the cell type and taking whichever lights pair well with regards to beam types, and which are also easy to handle/manage from an ergonomic standpoint. Even when hiking by myself, if I'm carrying 4-5 flashlights there's so much light redundancy that I really don't have any concerns about something failing. If something runs out of power or starts flashing, I just pack it away. In the case of overnight or hikes that require a good deal of canyon scrambling, I'll try harder to keep several lights using the same cell. An example might be, H30, E07vn, T27vn, then HM65R, D4vn(HI CRI).

The K30GTvn is one of those lights that's great on shorter hikes but I probably won't take it on anything much longer than a few hours. The same goes for the D4Svn. Those two lights combined come in at 711grams! If I switch that combo over to a E07vn and T27vn the combined weight is 430grams and I don't really feel like a missing much performance. The heavier lights are a luxury for when carrying an extra pound or two isn't a burden. The lighter lights are a practical consideration in order to reduce the amount of fatigue, while also carrying enough water and energy boosting trail snacks, clothing, emergency gear, rope when needed, etc.

I don't think I'd call it a self imposed rule, but when picking a belt or pack light to compliment the one that I'll be hand carrying, I like to go with something that gives me at least 4x the throw of my hand held light. So in the case of a D4SvnW2, I think the K30GTvn approaches that number fairly closely. For something like a 40Kcd E07, something over 160Kcd works well for helping me see something that I'm struggling to see with the smaller light.

Only you can decide if a CATvnV690 would compliment your D4SvnV2 enough but with the EmisarVN having so much performance already (118Kcd) I'm going to be looking for something with at least 300Kcd in order to justify carrying it. If there's not a healthy boost of performance between the primary and secondary, at some point I have to ask myself if it just wouldn't make more sense to carry an extra cell or two for the primary.

Compared to the CATv6 the T27vn90 is a few grams lighter and does 4300L 460Kcd. I suppose if a CATvnV690 could push 300Kcd it might change my mind however, because of it's compact dimensions. I'm eager to see what that little Thrunite can do though. Hopefully Vinh put a SBT90 in one soon!


The White 2.1 would definitely throw further than XHP35HI in the Catapult but I don't think it would be a good trade. You'd be cutting more than 1/2 your lumen output in order to gain 20-30% throw.

 

[b8llzblue]

I’m another person that loves my d4svnv2. The nightwatch ni40 https://skylumen.com/collections/v54-lights/products/nightwatch-ni40vn-budget-26650-clicky-thrower
is fairly small and hits 300kcd.
I have two versions of this light. W2 and sbt90. The 90 does about 250kcd and 4300 lumens.
and just recently Vinh had his 1st quarter sale, there was quite a few new sbt90 lights that would have fit the bill. They didn’t sell either so maybe pm Vinh...
Oh, another light that i love that’s similar to the d4svnv2 is the https://skylumen.com/collections/v54-lights/products/fireflies-rot66vn-v2-popcan-auxiliary

 

[Patriot]

That nightwatch with SBT90 must be awesome! It has such great heatfins! From a dollar to performance ratio, those nightwatch lights are crazy!

 

[Patriot]

Here's the T27vn90 compared to a few others. All are time exposures and brighter than the actual environment.

A look at the park (not a control)

D4SvnV2 Supercharged

CATvnV6 XHP35 HI CW

K30GTvn

T27vn90

 

[Joe_torch]

Great beam shots, Patriot!:twothumbsSeems the throw of the T27vn90 is great. But the wide beam of the CATvnV6 is very attractive too.

 

[Patriot]

Thanks Joe! The nice thing about the Thrunite is that it's a virtually flawless reflector beam with that LED. The T27vn90 is awesome but has some rings and the K30GTvn has a fantastically wide-ish hotspot but has a very slight donut effect in the hot spot.

The T27vn90 gets hot in about 1/3 the time of the K30GTvn. I burned the left side of my palm very slightly, where an overhead grip meets the heat fins on the light engine. I was concentrating on something else and the light went from hot to burning hot, a little more quickly than I was reacting. After I was home for a few minutes I decided to put some ice on it. Haha!!

 

[Patriot]

 

[twistedraven]

The K30GT seems like a pretty ideal size.

 

[Skylumen]

The K30GT seems like a pretty ideal size.

I haven't used any other size searchlight since I got the K30GTvn.

 

[Skylumen]

S200C2vn90+VN2
@ 2s 4400L, 170Kcd, 825m

 

[Skylumen]

Batch 2 came!!!

 

[MAD777]

S200C2vn90+VN2
@ 2s 4400L, 170Kcd, 825m

Amazing! I get similar throw from my S200C2vn XPG2, but with about 700 lumens!

P. S. That was my first V54 light!
Sent from my Pixel 2 using Tapatalk

 

[Patriot]

That's an expensive little bubble card you've got there, Vinh! Nice, not having to worry about supply at the moment.

 

[Patriot]

S200C2vn90+VN2
@ 2s 4400L, 170Kcd, 825m

Vinh, you posted the above numbers with VN2.

The website shows:
"SBT90 G2 5700K 3700L,155Kcd, 787m" Driver VN4 UI

Is this due to a difference between turn on and 30sec or is this attributed to a difference in drivers?

 

[Skylumen]

Its all VN4. VN2 was a typo.

 

[Kevin1322]

S200C2vn90+VN2
@ 2s 4400L, 170Kcd, 825m

Vinh, assuming this was with a VTC5D cell, any guess what lumens the LG 3500 cell gives? Thanks!