We’ve finished tests of MT4006 motor putting the 1555 propeller on it. You can see results on the diagrams below
1555 propellers produce a light thrust (up to 800 gf) and suitable for light drones. Nevertheless, this propeller allows obtaining more efficiency at a cruising flight. But looking at thrust values of 1760 and 1555 propellers, we can see that this addition is not significant. Myxa with this propeller also shows insignificant efficiency gain due to low power.