What is a key feature of the cam design in a universal compound bow?

The elliptical shape of the cam design in a universal compound bow is significant because it enhances the bow's performance by optimizing the power stroke and increasing efficiency. Elliptical cams allow for a smoother draw cycle and provide a more efficient energy transfer from the bow to the arrow. This shape helps reduce bowstring vibrations upon release, resulting in less noise and a more accurate shot.

Moreover, elliptical cams effectively manage the let-off during the draw, which allows the archer to hold at full draw with less effort, improving comfort and aiming precision. The design also aids in maintaining consistent arrow speed, which is crucial for achieving accuracy at varying distances.

While circular, square, and triangular cam designs exist, they do not provide the same combination of smoothness, efficiency, and performance enhancements as the elliptical design, making it the preferred choice in modern compound bows.