in this book
http://www.amazon.de/gp/product/imag...299956&s=books
a speed of 3° per second is giving for a VDM propeller.
So, as one hour on the gauge is showing a difference of 6° of propellerpitch change , with the actuel speed of ~16sec for one hour , CoD is to slow indeed.
CoD = 6° in 16sec
real (according to linked book)= 6° in 2 sec
