DAR--- stop it---now your throwing in 6 pitch props and 9" diameter. The original sqwak was a 4" pitch and a 8" was selected to give a wide spread of pitch for a definative test. We almost all concede that a maybe a 3"-2"or 1" pitch would be a problem but not a 4" pitch and you mentioned a higher 10x8 load. Not according to his Tacko (tach)
SPORT PILOT shut up and put your money where your mouth is...........You do the test and put thermo couplers and probes between the liners and the fins and where ever you feel needed.
If Downunder test showed a 20 or more degree difference I would start to get concerned ,but from day one I said a 4" pitch provided enough flow and more flow was not needed.........That the amount of flow reached it's terminal velocity and any more was no benefit
