VIAIR 250C-IG Compressor

[ArtemusMaximus]

Originally Posted by yash101

It is not the motor of the compressor that gets way too hot. The pump portion of the compressor is where the heat actually is generated, because you are concentrating the kinetic energy of air into a much smaller volume when you compress it. This causes a ton of heat to be expelled. To make the heat sink design more efficient, it would be wise to focus it's efforts on the small appendage that sticks out the end of the motor.

The reason why it seems as the motor gets quite hot is because the entire body is metal, so it conducts heat well. A ton of heat is generated at the actual compressor, making it extremely concentrated. Entropy finds conduction as one of the easiest way to spread out the heat, so it heats up the motor, which runs quite cool at that load.

If you were to build that heat sink, it would add more weight than benefit. The compressors shouldn't create so much heat within the two minutes of the game, that you would need to cool them with more than a small fan, even under a ~100% duty cycle!

As I noted previously, we mounted small fan on top of the cylinder heatsink and that seem kept it decently cool. However, during testing we had motor heat up so much that it was too hot to touch. Hence my original approach was start with motor. I also wanted to keep it as simple as possible that includes simplicity to manufacture it.
Looking again at the pictures I posted, I just realized that big fan over the Cylinder will not be efficient as it creates a dead-zone right where airflow is most important. I will try to think of something better.