Originally Posted by JetPlaneFlyer
Actually the weight of the prop makes no difference at all to how much torque there is. It's the motor that produces torque, not the prop
A heavier prop may produce more gyroscopic effect (gyroscopic procession) and may be a little slower to spool up.. but torque wont change.
Yep, quite aware of that. Just wanted to keep the terminology the same for the poster despite his terminology being wrong.
Doesn't change the result though, all else being equal two discs of the same size but different weights the heavier one will produce a greater reaction from the airframe.