Please observe the power range of the AXI´s. With 2820/10 you get only 300W and can definitly not move a 15lbs cessna. But there are AXI´s like the 4130 which can give you up to 1KW for just 170 €. See http://www.modelmotors.cz/index.php?...id_odkazy=m_ac. They don´t need gearboxes and therefore avoid the according power loss. Currently I´m using this 4130/20 with 24 x GP3300 for a CNC-cut-kit Stampe SV-4B from www.hobby-land.de with a span of 2,1m and 6kg. Originally intended for 15 ccm gas.
BR Walter