MambaMax ESC quirk

[lxmuff]

What are these thermo pads breaking loose? I have a problem with mine that could same problem.

Originally Posted by BrianG

Just my opinion here, but the MM is not intended for a MT or similarly weighted vehicle. Plus, it's only good for 4s/12 cells despite some people running more. A full size ESC has more voltage options. The real answer here is to wait for the Mamba Monster Max... if it ever comes out!

BTW: If you attach an external heatsink to the Quark, it doesn't need a fan. But, you are right about the thermal pads on the inside breaking loose sometimes. That didn't happen to me, but I modded it anyway before it happened. The good news here is if that does happen, you can send it back to Quark under warranty.

[BrianG]

Originally Posted by lxmuff

What are these thermo pads breaking loose? I have a problem with mine that could same problem.

Inside the Quark, there is a thick (~1mm) thermal pad that provides heat transfer from the FETs to the case. This pad is sticky on both sides to provide consistent contact. Actually, there are two pads. One between the FETs and a small Aluminum slab, and the other between the Aluminum slab and the case. THe slab is simple a spacer.

Some people have reported that these pads, over time, come loose. I imagine constant vibrations and the intake of dust particles slowly nulls the adhesive on the pad until it simply comes loose. When this happens, there is very poor heat transfer to the case and could overheat.

Some people open up the case and use thermal epoxy instead. However, once this is done, it is not coming apart again. So, this is a permanent solution and will void the warranty. Doing this mod makes the ESC run much cooler though.