MF01 Mini / MT07- Mod/Upgrade - Copper Heatsink Cover Plate

I would like to have 2 pcs. Great idea !

I’m interested in the second batch. Please sign me up.

For everyone interested, today I updated the post #1 and post #2 with some news on the Status and the 2nd batch.
Please take a look for the latest infos.

It works great, done in 15 minutes. :+1:

Interest in one

Thermal test now done

Test conditions:
driver temp sensor on PCB calibrated
set to 50°C
Full AMC heating at 2.4A

Time lapse x5 almost 5 minutes

I found that stock the Anduril firmware seem to quite regulating after first throttle, it may get into unsafe temperatures
In an assembled light a lot of the heat will be conducted away from battery tube, so the bare AMCs will stay a bit cooler
and the AMC heat spreader will stay quite a lot cooler than in this test

1. tested stock upper left
it seems after first throttle the temperature regulation quits and it heats up to 70°C on PCB

2. Aluminum prototype
lower left

3. production sample copper

middle upper and lower

Great comparison, Lexel. The clamp meter is a bit hard to read in the copper spreader test, but it looks like it stays around 2.4A perhaps? Aluminum doesn’t appear to be too far behind, but definitely better than running it bare.

Thanks for the test Lexel, great Job :+1:

As expected, the temperatures on the copper version stays a bit lower than on the aluminum version.
Also the heat distribution between the heatsink and the head seems to be best balanced on the copper version.

Yes with both heat spreaders in those 5 minutes the light ran constant, the clamp meter sometimes is acting bad not reading correct or fluctuating a bit, I may have to open it and clean

I am not sure how the temperature is affected in the total light assembly
with it the temperature is definitely a lot lower as the driver gets most cooling connection to the battery tube

But the strange behavior when thermal throttling should be history

Still it seems there is a bug in the firmware when it ran without heat spreader Anduril kept going almost at 100% while the light constantly heated up far behind the set point

I am interested in 2 of them.

Thanks for making a second batch!
Olles

man of light you can add my post link to the OP where I have images of thermal paste and silicone heat pad images added :wink:

Interested!!! How can i get one of those!?? Thank you

Interested in 1

Good idea Zozz, I’ve just added an alternative method of thermal contacting using thermal pads in the description of post #1 with a link to your post.

I also mentioned and linked the thermal test from Lexel in the OP.

Welcom to BLF, I’ve just answered your PM with some information and added you to the list of the 2nd batch.

Just for clarification (maybe I missed something), you have pictures with the thermal pad on top of the 7135 chips and a picture with the thermal pad on the bottom of the copper plate. Do you recommend putting it in both places or is one better than the other?

Not necessary. Those two pictures are two different try. Even if you add layers you make the thermal path worse. The second and current one is where I putted the thermal pad on the copper thing and cutted it exactly the shape it has. And I used thermap paste on the side of it. Then grabbed it with tweezers to put it in place.

Got it. Thanks.

Interested in 1 piece

Yes, please let us know. I was planning on paste……