【convoy】H4 and B35AM options are updated

[gchart]

@caramba

What do you think what could be the reason for these random step downs at 3.8V?

Sorry, I’m not familiar with that. The only stepdown I encountered was when thermal protection kicked in around 4 minutes on turbo.

[LTC]

Okay, my new finding is the M21C-U is doing fine, in fact very well, after the light has warmed up. It step down from high(100) to moon about 3.3V. This time I’m using a Vapcell T50, previously on P42A and 40T. Taking into account all factors and voltage sag. It’s about right that it step down about 3.3V on high(100) to moon.

I will test again with the P42A and 40T. Will also test with Vapcell G50 and Vapcell Red 4500mah(20A) and update here again.

Even before this finding. I love the M21C-U. It’s my most carried light for all my night walks.

@caramba

What could be the reason for the step down at 3.8V? It’s almost winter right now so I assume Thermal stepdown would be a non issue right?

@LTC

@id30209

To everyone owns M21C-U, does your light after switching on high in 4mode setting step down from HIgH to moonlight within 10seconds?

Caramba just asked me about it if i have this problem he is experiancing and i just checked mine and it does this within 10s when set to MAX.

Weird…

Yes, I noticed this on my M21C-U for 4 mode. This happened on high mode turn off(memory) and turn on again. It also happened for from off, double click to high.

I did some testing. This happened when battery is 3.8 volt and below. With a fresh battery, everything is fine.

I’m using P42A and 40T for M21C-U.

[LTC]

Hi Simon, I can relate your points. I have some findings mentioned prior to this post.

The weird part is the step down happened when the light is cool(below 30 degC-batt below 3.8V) . Again, as above post finding, it’s all fine and good after the light has warmed up.

Anyone care to share if there’s a theory to this effect that I missed?

@Simon Mao

@caramba

@gchart

I think when I reviewed the M21C-U it had actual low voltage protection. To quote myself:

There is a low voltage protection present. In the turbo runtime test, protection kicked in around 3.11 volts. For the high mode runtime test, protection kicked in around 2.97 V.

I won’t say the flashlight is perfect but it is one of my favorite flashlights in quite a while. The driver is very efficient and well regulated.

gchart. Thank you for the detailed response.

I also think it is almost a perfect flashlight.

What do you think what could be the reason for these random step downs at 3.8V?

There are the following possibilities for this problem,

1. The internal resistance of the tail spring is too large.
2. The internal resistance of the battery is too large or the voltage drops too fast under high current.
3. Poor contact somewhere.
4. The driver is defective.

[id30209]

There is similar complaint on TLF

Probleme mit Convoy M26C

[LTC]

Looks like a similar point on all fine after light has warmed up.

@id30209

There is similar complaint on TLF

Probleme mit Convoy M26C | Taschenlampen Forum

[dave1010]

Has anyone measured the throw of the Z1 with CSLPM1.TG or compared it to any other lights?

I’ve got one on the way from Simon but I’m not sure if it’s going to throw enough to scratch that itch.

Thanks.

[caramba]

@LTC

Okay, my new finding is the M21C-U is doing fine, in fact very well, after the light has warmed up. It step down from high(100) to moon about 3.3V. This time I’m using a Vapcell T50, previously on P42A and 40T. Taking into account all factors and voltage sag. It’s about right that it step down about 3.3V on high(100) to moon.

That is very interesting, I will try to verify it ans warm up the head to 30C before using,

@id30209

There is similar complaint on TLF

Probleme mit Convoy M26C | Taschenlampen Forum

That is also odd, I thoght the M26C has a different driver 12 mode vs Ramping

[PiercingTheDarkness]

Found a new bug on the 17mm 5A 12 group driver. If I keep cycling through the modes, at some stage it won’t light up until another tap of the switch. I swapped out everything and it still happened, tried a second build and same thing happens.

I can’t replicate this with a fully charged cell, only a partially drained one.

[PiercingTheDarkness]

@dave1010

Has anyone measured the throw of the Z1 with CSLPM1.TG or compared it to any other lights?

I’ve got one on the way from Simon but I’m not sure if it’s going to throw enough to scratch that itch.

Thanks.

I have one installed in a Z1 with the 6A driver, I got approx 950m. Unfortunately I didn’t write the candela down

[dave1010]

@Funtastic

@dave1010

Has anyone measured the throw of the Z1 with CSLPM1.TG or compared it to any other lights?

I have one installed in a Z1 with the 6A driver, I got approx 950m. Unfortunately I didn’t write the candela down

Thanks, that’s good to know. Looks like Simon’s listing is with a 6A driver too. 950m definitely beats my current furthest thrower (FT03 XHP50.2 @ 735m).

[PiercingTheDarkness]

@dave1010

@Funtastic

@dave1010

Has anyone measured the throw of the Z1 with CSLPM1.TG or compared it to any other lights?

I have one installed in a Z1 with the 6A driver, I got approx 950m. Unfortunately I didn’t write the candela down

Thanks, that’s good to know. Looks like Simon’s listing is with a 6A driver too. 950m definitely beats my current furthest thrower (FT03 XHP50.2 @ 735m).

I hope your Z1 doesn’t squeak like all 20pcs of mine. Careful dismantling to add lubricant that you don’t slice the orings. There is one at the rear of the head, make sure it’s in place and screw the head back on very slowly. Quite a few on BLF have sliced it

[dave1010]

@Funtastic

I hope your Z1 doesn’t squeak like all 20pcs of mine. Careful dismantling to add lubricant that you don’t slice the orings. There is one at the rear of the head, make sure it’s in place and screw the head back on very slowly. Quite a few on BLF have sliced it

Yeah, I saw reports of that after I ordered. I’ll report back if I get a squeeky one. Thanks for the tips.

[Yokiamy]

@LTC

@hasddie293

Recently checked AE L21A Culpm1, there already had some reviewer, sadly no beamshot. I actually really curious, what is the candela’s amount??hmm

It was stated by Simon with 1190m throw. So by calculation. It’s roughly 350kcd.

I have only see 2 tests so far. 1 is from Funtastic (his own biuld). Another from Chinese reviewer. Both of them get more than 1300m throw.

Will need more reviews and tests from others.

Just tested mine on a fresh charged 40T.
My Lux readings are always on the high side so probably reading at least 10% too high.
I have measured it at 5 m for 19600 Lx which equals 490 kCd (Approx. 1400m)

Taking into account a 10% error still makes it 440 kCd (Approx. 1326 m)

Lumens are measured with my Lumen tube calibrated against a Maukka calibration light, measured 1490 Lm at startup.

The hotspot of the 2mm is almost double the size of the 1mm2, which makes it a great thrower which has far better usability than the 1mm (that is a great laser like beam, but its got a very tiny hotspot.)

My L21A with WF 1mm2 and 5A driver measures 840 Lm and 22500 Lx which equals 562,5 kCd

[LTC]

Thanks mate… Now on my notes, there are 3 sets of data measured at 1300m ish…

@Yokiamy

@LTC

@hasddie293

Recently checked AE L21A Culpm1, there already had some reviewer, sadly no beamshot. I actually really curious, what is the candela’s amount??hmm

It was stated by Simon with 1190m throw. So by calculation. It’s roughly 350kcd.

I have only see 2 tests so far. 1 is from Funtastic (his own biuld). Another from Chinese reviewer. Both of them get more than 1300m throw.

Will need more reviews and tests from others.

Just tested mine on a fresh charged 40T.
My Lux readings are always on the high side so probably reading at least 10% too high.
I have measured it at 5 m for 19600 Lx which equals 490 kCd (Approx. 1400m)

Taking into account a 10% error still makes it 440 kCd (Approx. 1326 m)

Lumens are measured with my Lumen tube calibrated against a Maukka calibration light, measured 1490 Lm at startup.

The hotspot of the 2mm is almost double the size of the 1mm2, which makes it a great thrower which has far better usability than the 1mm (that is a great laser like beam, but its got a very tiny hotspot.)

My L21A with WF 1mm2 and 5A driver measures 840 Lm and 22500 Lx which equals 562,5 kCd

[PiercingTheDarkness]

[quote=LTC]
Thanks mate… Now on my notes, there are 3 sets of data measured at 1300m ish…

[quote]

There’ll never be the same measurement across the board when the led is driven above its rated spec

[PiercingTheDarkness]

@Yokiamy

Lumens are measured with my Lumen tube calibrated against a Maukka calibration light, measured 1490 Lm at startup.

What is the reading at 30s?

[Simon_Mao]

@JordanZHP

Hi Simon, any update on 3x21700 light? Thank you.

The flashlight hosts are almost completed.
Next, the manufacturer will start to produce 18A drivers. Considering the matching problem, some adjustments may be needed.

[Yokiamy]

@Funtastic

@Yokiamy

Lumens are measured with my Lumen tube calibrated against a Maukka calibration light, measured 1490 Lm at startup.

What is the reading at 30s?

I’ve just measured that for you, it drops 110 Lm after that it’s pretty stable and doesnt drop very hard anymore

[PiercingTheDarkness]

@Yokiamy

@Funtastic

@Yokiamy

Lumens are measured with my Lumen tube calibrated against a Maukka calibration light, measured 1490 Lm at startup.

What is the reading at 30s?

I’ve just measured that for you, it drops 110 Lm after that it’s pretty stable and doesnt drop very hard anymore

That’s higher than what I was able to achieve on 3 of mine.

I got different readings for other set ups too. These are all different chips of the CULPM1

7A - 1313 & 8A - 1318 (same chip)
7A - 1260
6A - 1300
6A - 1200

Just shows how much variation these Osram chips have.

On the datasheet for the 8RF bin, Simon sells, has got a Min 1690 lm and Max 1900 lm at 6A

[JaredM]

@Simon Mao

@JordanZHP

Hi Simon, any update on 3x21700 light? Thank you.

The flashlight hosts are almost completed.
Next, the manufacturer will start to produce 18A drivers. Considering the matching problem, some adjustments may be needed.

Matching problem? BTW, I’m very excited about this light!