ORIGINAL: mono wing
the plane weighs 10lbs without the motor which he got from me about 3 weeks ago
The motor is a saito 150 I know it weighs 30oz without spinner or prop.
He was saying that it will take 1 3/4 lbs in order to get the cg ???
Is he trying to set the CG without the engine? The wording of your question leaves this open. If that's the case, then the engine will bring it in close to balance. It might even need an ounce or two in the tail.