Need to replace Mamba motor in FLM Rusty

[suicideneil]

Originally Posted by dadgummit

In the pictures it is one of the white wire esc's which I think means it is one of the earlier models if the quark. Where can I get the piece of aluminum for the heat mod? Can Mike mill one up for me? Also should I replace the piece that is in the middle? Please keep in mind that Dean's plugs are about the extent of my self taught soldering ability. Can the mod be done without removing the motor wires?

No need to remove any wires, so you're safe there. I believe the aluminum you need is either 1/8" or 1/4" thick (can never remember, BrianG where are you?), and is stuck down onto the fets with Arctic Alumna thermal epoxy, and then thermal grease is applied to the top of it so that it makes good contact with the inside of the esc case. The middle heat spreader is more fiddly so is best left alone.

[BrianG]

Originally Posted by suicideneil

No need to remove any wires, so you're safe there. I believe the aluminum you need is either 1/8" or 1/4" thick (can never remember, BrianG where are you?), and is stuck down onto the fets with Arctic Alumna thermal epoxy, and then thermal grease is applied to the top of it so that it makes good contact with the inside of the esc case. The middle heat spreader is more fiddly so is best left alone.

Lol, I'm here. Yeah, it's 1/8" thick. The stock is less than that, but you lose thickness when you remove the pads. Here is a pic:



And yes, use thermal epoxy on to secure the heat spreader to the FETs and to the case. Otherwise, movement of the PCB when running will reduce the effectiveness of regular thermal compound. And make sure to use Arctic Alumina thermal epoxy because the regular AS epoxy has silver particles in it.