Has anyone done any reviews on the new Convoy S21B yet?

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rogue2020
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Has anyone done any reviews on the new Convoy S21B yet?

Hi…

I would like to know has anyone done any written reviews on the new Convoy S21B yet? I noticed that there are two options: SST40 and KW CULPM1.TG.

I would like to see the runtime and performance chart if possible.

Thanks!

darosk
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The s21b with osram is fairly new, I think only a week or so it’s been up. Even if someone ordered it day 1 it likely wouldn’t have landed yet (unless it was a custom order from earlier).
I’m interested too, but we gotta wait I guess.

My Lights (Updated: Nov 22, 2020)

deliafranco930
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manithree
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Besides the emitter (in the Osram, anyway), what’s the difference between the S21A and the S21B? The dimensions look similar, the driver and firmware look exactly the same. Throwier reflector, maybe?

Edit: Ok, I forgot to mention the obvious cosmetic differences on the exterior (S21A is mostly knurled, S21B isn’t). Is that really the major difference?

RapidLux
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Another S21B review

RapidLux
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One more S21B review, same reviewer.

JaredM
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The S21a uses a screw in brass pill and the B has an integrated shelf

Serlite
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JaredM wrote:
The S21a uses a screw in brass pill and the B has an integrated shelf

That’s some good information to know! Well, maybe just for newer modders like me.
I still have bad memories of trying to “unscrew” the shelf of a defective SP32A V2.0. I attacked it with every tool I had, thinking that with just a little bit more force, it would unscrew and I could get at the driver.

Then I took a closer look and realized it was actually part of the flashlight head. Ah…

rogue2020
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Hi everyone…

Thanks for the input. But I’m looking for the runtime performance graph for the Convoy S21B, how bright, how long, etc. You know, the one that Zeroair or 1Lumen usually provide. Have anyone something similar like that?

Thanks!

blueb8llz
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I’m waiting til convoy releases one with a sbt90.2.

JaredM
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An S21B w/ a 90.2? Ain’t gonna happen unless you make it yourself

justanotherguy
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JaredM wrote:
The S21a uses a screw in brass pill and the B has an integrated shelf

But other than that, the beam is pretty much going to look the same?

The shelf is good for heat dissipation………….?

I think I would like a Convoy in 21700 and want something floody

JaredM
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If you want floody, then a reflector light may or may not be what your after. I’ll say that with a screw in pill design, it offers flexibility to a variance in optic and mcpcb stack up heights. This means in an S21A, you could easily use a floody TIR in place of the reflector without the headache of spacers/ shims. The A model will theoretically be at a thermal disadvantage vs the B, but neither can sink all that much power continuously.

Later I’ll link the optics I’ve found with the perfect diameter for the s21A and FW3A series lights. I have samples of all variations. (From AE)

Oh and to answer your questions. Yes, the shelf should improve heat dissipation and the reflectors are shared between the two – although the A std is OP and B is SMO

Nachtfeuerzeug
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JaredM wrote:
If you want floody, then a reflector light may or may not be what your after. I'll say that with a screw in pill design, it offers flexibility to a variance in optic and mcpcb stack up heights. This means in an S21A, you could easily use a floody TIR in place of the reflector without the headache of spacers/ shims. The A model will theoretically be at a thermal disadvantage vs the B, but neither can sink all that much power continuously. Later I'll link the optics I've found with the perfect diameter for the s21A and FW3A series lights. I have samples of all variations. (From AE) Oh and to answer your questions. Yes, the shelf should improve heat dissipation and the reflectors are shared between the two - although the A std is OP and B is SMO

Would one of these work for this light. http://www.carclo-optics.com/optic-10138?optictype=tir&diameter=20.0

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, LH351D 4000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | SK Zoomie Nichia 5000k, C2 driver | EagleTac clip | Ultrafire C2 w/5A 17mm & XM-L2 | Nichia 219C 2700K with gray S6 |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3)

darosk
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Are there ‘throwy’ TIRs available for the S21A/B?

To my understanding, the Manker Mc13 uses such a TIR. I’m guessing it’s a specialised one by Manker though.

My Lights (Updated: Nov 22, 2020)

JaredM
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I will have to take lux measurements of my TIR samples and see how they compare to the reflector, but yes, there are throwy TIR optics available. The Carclo type linked will work fine in the s21A, especually if you’re going to use a protected cell. The optic is 1.8mm shorter, so the battery compartment will be that much longer. If larger springs are used at both ends, contact issues shouldn’t exist.

Nachtfeuerzeug
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Thank you Jared! I see LEDSupply is in Vermont. Are there other suppliers in the USA?

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, LH351D 4000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | SK Zoomie Nichia 5000k, C2 driver | EagleTac clip | Ultrafire C2 w/5A 17mm & XM-L2 | Nichia 219C 2700K with gray S6 |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3)