Inside the Quark 125, pics.

[Mike.L]

i know selvester was thinking of doing just that, he was going to take apart his 9920 and look at it and order far better components and and on top of it mill his very big alunimum heat sink. But because hes busy and lack of time, re-considered it.

he did tell me that when he comes back that hes going to add avery large heat sink to his 9920.

[BrianG]

I'll be curious to see how it all turns out. Is he looking for more current capability, or just better cooling? Any idea which FET he plans on using?

The only perfectly built ESC I've seen is the CC Phoenix HV-110. Each layer has an Al slab connecting to the heatsink and the main heatsink looks quite beefy. It's probably a PITA to assemble those since you can't just slap the PCBs together and then slap a heatsink on the top layer of FETs. The Quark is probably the next best as far as construction goes.