Mostly thermal pads are used because of insulation, as for e.g. focbox/vesc mosfet package is either positive/negative terminal so u want to prevent all of them shorting
Ah I was thinking someone would use the small existing heatsinks on a vesc and make it larger by combining that with an external heatsink. I forgot that most people just go directly from mosfets to external.
Yes if used heatsink on heatsink then either cleaned surface to surface or u can use some thermal paste for better contact.
I needed to drop the escs through the enclosure to fit them in with the heatsink attached, but this 3d print I made was a poor design, executed poorly.
It failed after roughly 500km and now looks like this
#tapegang
The old 6.6 flipsky, can remove the heatsink, and reattach, to sandwich the enclosure. You cut a hole big enough for the mosfets. slap some seal goop. Works a treat, EXCEPT, that I live in the dessert. The asphalt gets scorching and heats it up.
Looks sick, but doesn’t it hurt the sinks performance if you coat it? I mean you’re practically insulating it by the looks of it. Is there a measurable difference?
You will still get the thermal mass.
Based on the testing I did, not even a little bit. If anything will affect it will be the lack of fins in the wind stream.
I heated them both with the heat gun to the same temp twice. One painted and one just anodized. M They stayed within tenths of degrees as they cooled. Twice. Considering I’m running two on Stormcore 100D’s, I doubt they will ever get warm.
Should through mount heat sinks include a beveled faceplate that goes on the outside to hide the edges of the cut?
how did you cut enclosure ?
Just a Dremel and a cutting disk… for the corners you have to be very careful
Best to cut small and bring up to size with files.
This has got be the most satisfying enclosure around. Especially if you follow his build on freesk8