There isn't a pattern. I goofed because I didn't acctually want the wheels to be that small, it took lots of quilting. I had some measuring to figure out the sizes of the pieces but if you put the pattern on graphing paper and then cut out the peices and add the 1/4 seam allowance it works.I use the graphed milar. Once you figure out the size you can use squares to cut in half and, then squares to cut in half and half again for the smaller triangles. Then I put the sashing around each square. I saw the lime in another baby quilt with pin wheels but they had flaps of material for the blades of the wheel and I didn't want that. Glad you like it.