Perhaps the most confusing issue in the Acro sport drawings is the location of the drag wires on the spars.
This drawing shows the blocks on the CORD LINE of the spar. This is incorrect. The drag wires should be closer to the SPAR CENTER LINE. The center line of the blocks should be over the center line of the compression beam in the ribs. If you did place the blocks on the cord line there is not any significant loss to strength. Several airplanes have been built with this error.
The bigger issue is control linkage clearance in the lower wing. Some modification to the aileron bell crank and idler may be needed if the blocks are on the cord line.
Edited by: Neil
