1. Graphical position analysis of a 4 bar RRRR linkage Choose your coordinate system and origin.

2. L1L1 Graphical position analysis of a 4 bar RRRR linkage Fix your ground link

3. L1L1 L2L2 22 Graphical position analysis of a 4 bar RRRR linkage Construct input link in given position by drawing a link of length L 2 at an angle  2 with the horizontal

4. L1L1 L2L2 22 Graphical position analysis of a 4 bar RRRR linkage L3L3 L4L4 Draw an arc of radius L4 from the fixed pivot of L1. Draw an arc of radius L3 from the free pivot of link 2. The point of intersection is the location of the pin joint between links 3 and 4. Construct links 3 and 4.

5. L1L1 L2L2 22 Graphical position analysis of a 4 bar RRRR linkage L3L3 L4L4 L5L5 55 Coupler point Attach the coupler triangle to link 3. Locate the coupler point.

6. L1L1 L2L2 22 Graphical position analysis of a 4 bar RRRR linkage L3L3 L4L4 L5L5 55 Coupler point Repeat steps at different  2 to complete the coupler curve

7. L1L1 L2L2 22 Graphical position analysis of a 4 bar RRRR linkage L3L3 L4L4 Alternative configuration 55 L5L5 Coupler point