Hi Richard, all good one? I am looking torque for my model, therefore it was a little heavy for my engine, then I have that to have more torque of that speed, the ideal would be that it had the weight of 3600 - 3700 grams. In the last end of week I used to wooden propeller Zinger 15x6 and the result was very bad, the engine turned little and was without force. Perhaps this bad performance is explained why this prop is not appropriate for my engine and all we know that they do not exist propellers that the APC's. I go to try 15x6 and also one 13x11. Thank´s for the help.

OBS.: I´m using the tool of translation of languages of the Google. You it understood everything that I wrote?