【convoy】convoy S12 / M21B / M4U

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andr3w
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Could anybody please tell if there is brightness stabilization in sst40 ramping driver?

g_damian
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SST-40 8A driver is constant current, no PWM. I’m not sure what do you mean by brightness stabilization. It’s CC driver, so when battery voltage is lower than forward voltage of the LED, it delivers lower amperage.

andr3w
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Brightness and amperage stabilization are synonyms for me here (sorry, I’m not an expert).
As far as I understood, any specific brightness mode has variable number of lumens for this case, depending on battery charge. Thank you

ggf31416
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Because the driver doesn’t use PWM, unlike the 7135s driver, lower modes should still be stabilized if the battery voltage is high enough for that mode even if the higher modes lost regulation.

Eneen
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What’s diameter of reflector and diameter of led triple circle? Will carclo optics do here? What’s depth of driver compartment? Wonder, if H1A driver will fit inside to drive triple in series.
If reflector is deep enough I can design 3D printed gasket-under-glass for carclo 10507, ledil satu, kai optics or even quads.

EDIT: reflector is 28.6mm x 11.1mm (answer from Simon, thank you!)
This means that there’s plenty of space and quad carclo 10622 fill fit. But for singles it’s limited to ~20mm reflectors.

oweban
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Does anyone know if the S12’s bezel is stainless? Sure feels like it, giving it a bit of a play in my hand. Nice and hefty.

(Want to make sure I have the right info for review Smile )

Eneen
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@Simon: while improving inner diameter for 21700 is it possible that you change S21A driver size into 22mm?

Simon Mao
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Eneen wrote:
@Simon: while improving inner diameter for 21700 is it possible that you change S21A driver size into 22mm?

Limited by size, the maximum diameter can only be 20mm

Simon Mao
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oweban wrote:
Does anyone know if the S12’s bezel is stainless? Sure feels like it, giving it a bit of a play in my hand. Nice and hefty.

(Want to make sure I have the right info for review Smile )

yes, it’s stainless steel bezel

oweban
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Thanks Simon, appreciated. Loving the light Smile

Eneen
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@Simon: thx, I see.
Do you plan Samsung LH351D 5000K 90CRI option?

kiriba-ru
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Does new 20700 hosts support pocket clips?

Wildcat
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Just FYI:

New Liitokala Lii-50E 5000mAh 21700 battery have 21.3mm diameter and fit perfectly into Convoy S21A.

Mocarny
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RelakS
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Wildcat wrote:
Just FYI:

New Liitokala Lii-50E 5000mAh 21700 battery have 21.3mm diameter and fit perfectly into Convoy S21A.

Can you share a link?

UTFG? Big Smile

Let me guess: this? (not sponsored, or anything)

Yokiamy
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Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

Barkuti
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Hello!

Anyone tried ordering something from the Convoy store and requesting a discount recently?

AliExpress changed the payment methods, they removed the “other payment methods” option: card, PayPal, WebMoney and wire transfer only now. Flat Stare

Messaged Simon in AliExpress, guess this has to be done in some alternative way now. 

Lightbringer
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Not really. I never asked for any discount.

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Yokiamy
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Barkuti wrote:

Hello!


Anyone tried ordering something from the Convoy store and requesting a discount recently?


AliExpress changed the payment methods, they removed the “other payment methods” option: card, PayPal, WebMoney and wire transfer only now. Flat Stare


Messaged Simon in AliExpress, guess this has to be done in some alternative way now. 

Yes, just order and do not finish payment
message Simon the ordernumber and mention the BLF Discount and he will give you discount

Budget Light Forum ...where Frugal meets with Flashlight!

 

WTS BLF GT

 

g_damian
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Does anyone else have problems with M21B tailstanding?

Barkuti
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Yokiamy wrote:

Yes, just order and do not finish payment …

I cannot order without paying this way!

When “other payment methods” was available I would select that, place order and withdraw from the payment page. This is no longer available.

Sorry but fµck1ng AliExpress, this year's site renewal has been a screw-up and it seems not yet done… 

Mocarny
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g_damian wrote:
Does anyone else have problems with M21B tailstanding?

Yes, M21B can’t tailstand, button is juuust a little too big. In fact it can tailstand but on the edge and it’s wiggling.
I think Simon mentioned it will be fixed in next batch, but I’m not sure.
Barkuti
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The payments' issue has been reported (had a lenghty chat with customer service). The representative told me the Android application would provide me with the missing “other payments” option. Too bad the app messes up with browser operation, “capturing” website commands and opening up, which I don't like. So I kept the intallation package (apk) and uninstalled it after submitting my order LoL. 

 

Lightbringer wrote:
Not really. I never asked for any discount.

This is a choice of yours because you can afford it, and bear no doubt it provides you with some benefit. I lived with certain abundance years ago, purchasing really good and expensive stuff. Then @#$% happened, or I should better say I chose to learn certain Wink life lessons. Over the years I've learned to optimize my expenses, now spending only on proper food and following an absolutely abstemious way of life. And much more thanks to mind reprogramming, a true way to healing. And I'm quite happy about it. Smile

 

Source: https://www.ebay.es/itm/SOUTH-PARK-Drugs-Are-Bad-Mkay-25mm-1-Pin-Badge-Button-Mr-Mackey-/391696068925

 

I'll eventually live in higher abundance again, I'm somehow attracting it already. Wink 

Lightbringer
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Lightbringer wrote:
Not really. I never asked for any discount.
Barkuti wrote:
This is a choice of yours because you can afford it, and bear no doubt it provides you with some benefit.

Wellp, it was just a convoluted process to begin with, and I just figured Simon’s a one-man band doing pretty much everything solo, so just I’d rather he have it than go through all the contortions for a few bux.

Plus, when I just asked if he had any S2+ pills for sale because they weren’t listed on his store, he threw in a few for free.

Barkuti wrote:
I’ll eventually live in higher abundance again, I’m somehow attracting it already. Wink

Yep, those UV lights will attract damned near anything

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khas
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I recieved my Convoy M21B yesterday, I think it’s a very nice upgrade of one of my favorite Convoy flashlights the M1.

I like the new Convoy drivers, but I why do they have mode memory ?. I would prefer no mode memory or at least option to toggle it on or off.

contactcr
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Barkuti wrote:

The payments’ issue has been reported

You are way overthinking this. Just choose wire transfer or literally anything that will allow you to complete it. When you go to your orders and finally pay it will prompt you with the options again (you aren’t stuck using wire transfer).

Barkuti
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khas wrote:
I recieved my Convoy M21B yesterday, I think it's a very nice upgrade of one of my favorite Convoy flashlights the M1.

Wellp, what you call upgrade can also be considered a pocketable downgrade. Barefooted I'm just 5' 5" and the M1 has around the maximum size I am willing to carry in my trousers' front pockets. Innocent 

RelakS
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Convoy M21A
It does have the ideal beam width for me. The brightness is almost good.
However. Is it possible, that if the INR18650 3600mAh 10A (Yellow) Vapcell battery is around 3.5V without load, then the High and the Turbo mode practically have the same brightness? I used it on a bike as a high beam, so it was cold. So cold actually, that I could even touch the inside of the flashlight.

Is there any other flashlight with the same beam parameters, but better cooling anyway? Maybe, with electronic switch? It would be also insane, if I could connect two to each other. I think about something what you can do with the S2 drivers: remove the Attiny 13 from one of them, and wire the controller output of the other Attiny to where the removed controllers output were. I haven’t tried it, but based on how this chip works, it should be possible Smile

ggf31416
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RelakS wrote:
Convoy M21A It does have the ideal beam width for me. The brightness is almost good. However. Is it possible, that if the INR18650 3600mAh 10A (Yellow) Vapcell battery is around 3.5V without load, then the High and the Turbo mode practically have the same brightness? I used it on a bike as a high beam, so it was cold. So cold actually, that I could even touch the inside of the flashlight.

Assuming the Vapcell cell is a Samsung 36G , according to HKJ’s data, at the point where voltage under minimum load reaches 3.5V, the voltage under 2-3A load is 3.30-3.35V, add 0.1 or 0.2V voltage loss from the flashlight body and circuits and the voltage becomes insufficient to support the highest modes. As it doesn’t use PWM, each mode should keep its current constant until it loses regulation, then the current will be the one from the Vf curve for the voltage after losses. If the voltage is only enough, for example, for 1.5A then both 30% and 100% modes will be 1.5A. The modes are not a % of the max mode as in 7135s PWM drivers.

RelakS
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Well, I can’t tell if these are the same.
I hope it will perform better with 21700 batteries Smile

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