I'll replace the 3 original brushed motors by 1 brushless motor. After looking arround I found the Turnigy 2730 Brushless Motor 1700kv. This motor should fit in to the nose of the Tin Goose and would give me enough thrust on a 2cell Lipo combined with a 7 or 8 inch folding prop.
This modification reduces the weigth of the plane with 70 grams. In the next blogs I will test this rebuild with several types of battery and with a 7" and 8" folding prop.