Hi Simon. Prosperity to you! )
I checked the operation of the Convoy M3 thermal control, it worked at a temperature of 37°C on the surface of the head of the flashlight. I think this is very early, I would prefer the operation of thermal control at a temperature of ~50°C-55°C on the surface of the head of the flashlight.
Was this conceived, or is this a mistake and will be fixed in the future? Are the thermal control settings the same in all new flashlights?
But the function of thermal control itself is very important in flashlights, I was very glad when the thermal control appeared in flashlights Convoy
Thanks!
It’s probably 55 degrees at the driver; given the difference you’re noticing, 55 degrees at the front would be 71 degrees at the driver (and if there’s wind cooling the front, potentially even higher….)
After removing the NTC of the driver, the temperature regulation is gone.
I am very happy with it now, the light now works as intended, just full power on max (and yes, it does get hot after a couple of minutes, but still a lot better then the Astrolux FT03 though)
Probably, this is more or less a matter of (inefficient) thermal conductivity. If the driver gets hot like crazy but the host structure around it remains much cooler Simon should look for ways to improve the thermal transfer and dissipation. I could imagine that the driver does not make good contact to the M3 host or cannot dissipate the heat due to non-conductive materials.
I faced the same situation with my M3. No matter how often I restart the highest mode, it never really gets very warm on the outside.
Have you guys tried stuffing the driver cavity with silicone cubes? I found it worked well with a Convoy S3 and 5A 4-mode Convoy driver. The host did become hotter* before thermal regulation kicked in. In the M3, a lot of the driver’s heat should be absorbed by the silicone cubes allowing for longer turbo runs.
After removing the NTC of the driver, the temperature regulation is gone.
I am very happy with it now, the light now works as intended, just full power on max (and yes, it does get hot after a couple of minutes, but still a lot better then the Astrolux FT03 though)
Since the drive detects the temperature of the component, not the temperature of the surface of the case, I have raised the threshold for temperature protection at around 60 degrees.
In addition, more heat-dissipating rubber blocks can be added to the driving surface.
Sorry I don’t fully understand the picture. The circled spot is I suppose the thermal sensor controller, but what should we do to disable it if we don’t want the temperature control on the SST40 4-mode driver? The circled part has to be unsoldered? Pardon my ignorance…