Ialwayslaugh
Member
Of course you already know the weight you are going to be putting into it but at 1500mm is around a 5 foot WS, which means you will be creating lift on the wingtips as well. This will create a lot of leveraged torque directed right to the center of the wing where it attaches to the fuse. Of course the whole wing will create the lift to evenly distribute the work throughout the wing but the center is where you will see the stress. The FB spar will be somewhere around 60" which is two full sheets wide, having a joint in the middle, creating that weak point. That is what will need the reinforcing. At that center point is where I would put the paint stick, same as the FT Storch actually, model your wing after that.
Sorry i was thinking out loud there, if the message doesn't make sense... need coffee
These are the plans that I'm using, just so you know.