Hi all
Spoke to wren turbines the other day about their thrust tube. They told me that with their tube you would in fact be adding between .5 to 1lb of thrust more to the normal turbine. What i wanted to know was how much thrust in theory do you loose by putting the turbine in the normal place with the ducting i have heard that power is lost but is it .5 or 1lb or more. this will make me decide either to put the turbine in the conventional manner of in the tail.