I am an engineering student at Montgomery County Community College, Blue Bell, PA, US and I am part of a quadrotor research project (website: quadforge.net). We are using a DJI F450 with the APM 2.5 and this site, along with the hardware and firmware, has been invaluable. Thank you.
We are starting to test various prop and motor combinations to see which one gives us the greatest g/W. There a lot of threads with advice about which combinations are the best but not a lot about how to test which is the best. We have come up with a simple test rig:
The motor/propeller would be free to move in the notches cut out of the PVC. Everything would be connected to the APM 2.5 (with power monitor), we would set a few specific throttle levels and see which combination generates the most thrust over how much power it is using. After we figure out which one generates the most g/W we're going to fly and see if we are right.
What do you think of the rig?
How do you test out which motor/prop combination is the best (so you know, we are not looking to change frames which limits our prop diameter to 12 inches)?
Do you have any advice as to what motors and propellers to purchase (other than the stock DJI ones we have)?