The Da Vinci Flying Machine or Davifman for short, was modified from a drawing in Da Vinci's journal. I added moddern touches like replacing the yew benders with trampoline springs and other minor adjustments. Sorry I don't have any mesurments but my modle is to scale and the mesurements are 13ft. wing span 25in. long and 10in. high. You can deviate from these mesurments as much as you like but this is in close scale to what Da Vinci wanted. If the instructions for some things seem hard to understand but the pictures will clear that up.
Step 1: Making the Base
I started with a 1in. pipe with a pulley on each end. I attached the pulleys by welding a bolt to a 1in. circle of metal then you just weld that to the both ends of the pipe. After that slide your pulleys on the end of the bolts and add a washer and nut. Attach the pipe to a wood plank with a c-clamp. Then add two planks from the middle of the plank thats attached to the middle of the pipe and attach the other end to the ends of the pipe.
After this in the middle of the pipe add ether wood or iron bars to make a trapezoid with the pipe. On the top of this add a flat bar with a hole in the top (for the wings) and on the top left and bottom right add a wood block that will make the wings rest level. In the middle of the trapezoid add a pulley on each side.