ENEDED

I feel the MF01 does a good job protecting its light, it does drop the output depends on temperature. Remember, I was running on high mode for almost 35mins so the light is already hot. I go from high to turbo without cooling it down.

When the light steps down I can choose to turbo it back on. But the light would just step down again to protect it.
The temperature isn’t really that bad to my hand at all to be honest… I can still grab the light by the head on turbo.

And I just tested turbo mode on MF01, it runs about 1 minutes and 37 seconds before I see the step down.
And test my HaikeLite MT03 (over 9000 lumens) runs on turbo over 3 mins and I see no stepping down… the head is no where near the temperature of the MF01 on 1 minutes turbo… I guess Nichia is just a high heat light. Maybe XP-G3 has lower heat?

Yes, it’s a fact, the XP-G3 gets less heated. But it is strange that the MF01 even with strong cooling reduces the brightness on the Turbo :frowning:

V1 of the driver didn’t reduce for a few minutes (Nichia version, Samsung 30Q, used outside 8deg C/44F, ~20mph wind, light rain; the head was ~40 C / 104F). I stopped the test after 4 minutes, no brightness reduction.

Someone should teardown thw light to see if it has thermal sensor

Wow! Cool! :+1:

He might know mizou51.

My turbo test was done indoor with no wind and at room temperature, I wounder if I keep the light cool would make a difference on stepping downs. I guess I can throw my light in the freezer on turbo and see what happens lol

So I did this…lol. it didn’t help with the step down timing, still got about the same run time of 1 minutes 30 seconds on turbo.

However, it was a V1 driver. And the light suddenly turned on and stayed on (couldn’t turn off, one bank of LEDs on full power) shortly thereafter, so possibly it was just a symptom of faulty driver…

Is your light from first or the second batch?

PS. Still no further info from BG - they gave me an order number for the MF-01 head but I can’t find it anywhere.

Yes this is from the second batch, I don’t mind the turbo step down because I really don’t need it for that long. And I can always just double click to bypass it to turbo again.
The high mode is running plenty amount of light and it ran for more than 35mins before I got bored… normal night walking on medium is also more than enough for my personal usage. The high and turbo is like the boom button to surprise friends or a quick boost for me to identify objects farther away.

You are also convinced of this. About what I said …

It’s a shame they don’t have a colored stainless steel version like the S41 :sunglasses:

Hmmm… and after the stepdown kicks in, if you bypass to turbo, does it again wait 1,5 minutes before dimming again?…

My v1 after stepdown kicked in, if I went to turbo again, dimmed nearly immediately. Same after unscrewing/screwing. The head was really hot, over 60.
In wind and rain, there was no stepdown at all.

So , possibly there is added timer in v2 to prevent damaging from too high currend over a long time (I suppose not all parts are cooled equally well, some components of the driver can fail even if the outside is cooled…

Will there be a group buy for the forklift that goes with it? :wink:

Turbo it back on it will step down almost immediately as you described, I’ve also heard that second batch produce more lumens so therefore more heat than the first batch, but don’t call me on it because the ice bath is cooling the light externally, not the driver which is internally.

From my basic comparison with my MT03 which has 9000 lumens (some tested higher up to 10k in BLF), my MF01 is definitely brighter. Bright enough to just covered the beam on my MT03.

hello

I have a V1 MF01 host running a modded driver with NarsilM. I set the turbo limit to 60°C. I reach this limit in 1min47sec (room temp is 19°C)
The MF01 has a very very small head design and fins are inexistants… It’s not a performing light for lumens but a “pocket” big boy floodier.

In comparaison the MT03 also running a TA driver with narsilM has the same approx output (10000-12000lm) and can sustain turbo for 5min without problem. Fins are really deep and head is two time the MF01 head size.

No secret in this turbo timing. Acebeam light have big heads with big fins.
But when you see the MT07S with TA driver NArsilM that can sustain 9000lm for5minutes and for 1/4 price of the ACEBEAM lights :wink:

V1 driver picts

So ive just receive the light
Apparently, it’s mateminco who made this light
They changed the led wiring, from 6s3p to 18s i guess( or maybe 18p, i cant track the wire, but i bet it’s 18s because the wire is quite thin for such high current)

Overall i’m pleased with what i paid, very bright and good looking color

sound good, looks good)

So, since the replacement head is now on the way, I thought it be time to work on repurposing the defective one. I think it’d be great as an off-road light. All the leds work, just that one bank on the driver is stuck in turbo.

I’d like to replace the driver with either an existing standalone 12V-input driver, or Lexel’s MF-01 driver in a separate case. By doing this the driver is not subject to the heat generated by the leds. This could also allow the head to run longer at full power before sustaining damage.

Anyone have any ideas? I’d like to have at least 2-3 power levels. Also, I’m thinking of fashioning some kind of additional fins, to help pull away heat from the unit. Any help on this would be appreciated, as well.

Lastly, does anyone know what the max sustiained output could be. Keep in mind that the MCPBC would be the only board on the head that would be subjected to the heat from the leds.