I gave a couple of Airworld Hawks, both with JetCat 180s and JetCat smoke pumps, original types.

On both Jets the smoke is great at low power, but fades as power is increased.

Increasing the flow rate causes popping and banging and flashes of flame at low power.

The pipe is the shepherds crook shape with fine slot outlet and positioned behind the exhaust cone as recommended by JC.

Tried several smoke fluids, same result!

Any suggestions ?

David Gladwin.