My plane currently weighs 235g (minus a few grammes of control surface connections), but it has a weight problem.
I used FreeCAD to design and print a simple balance frame.
I then removed the battery (27g 600mAh 2S LiPo) and put some scales under the tail. They read 25g. In order to get the plane to balance, I’d need to place the battery somewhere about 300mm in front of the centre of gravity. The nose of the plane is 150mm long. Bugger.
The tailplane weighs 8g and is too heavy and too far rearward. It’s currently made out of the 6mm foam that the wing is. I have some much thinner foam I can do it with. I can also bring it about 100mm forward as the current tail arm is a bit too long. Doing that will make the plane twitchier in pitch, but I have a gyro to help me out in the first few flights.
The carbon fibre booms are 10g each, so if I cut them down, that will reduce to 7g, and the printed tail plane mounts are an over-engineered 1.5g each so there is some saving to be had there.
I really don’t want to stick the motor on the front of the plane as that’d be boring, so better to make the tail lighter than the nose heavier.