Prop sizes..
I don't have a tach yet.. one of those things that gets put aside for new planes. My first test flights were on cement and unless you gave it a bit of a push to get it rolling the idle would not get you rolling, and no there is no excessive friction in the wheels.. It is just a very smooth low idle motor. Something interesting I just learned today from an old hand at R/C said that for every 2000 feet in elevation you need another inch or foot? of pitch to compensate for air density. I am fairly happy with the results of testing different props. I tried a low pitch 12 inch prop today (since we were on cement this time)(ground clearence) It was like having massive airbrakes on a glider. It means having small amounts of throttle on landing. ( which I prefer ) Seemed to make it a bit easier for the father inlaw to set up his apporaches this way. After he learnes a bit more about airspeed control, I am planning on switching it back to a 11X6 to make it more of a challenge to set up his approach.
FW