Today I moved the L-39 into the shop. I weighed all the parts that arrived in the box. Total weight came out at exactly 30 lbs. Yet to be installed is the turbine and batteries. So maybe around 35 lbs dry is possible. I also measured the fuel tank capacity. There are 2 tanks installed, the smaller one is marked 1500cc so 50 ounces. The large tank is not marked so I filled and measured, came out at 115 ozs. Total of 165 for the main tanks and looks like about 8 or maybe 10 in the UAT.