Motorcycle manufacturers offer engines with two methods of cooling: air cooling and liquid cooling. In air cooling, fins are applied to the outside of the cylinder and the cylinder is oriented to provide the best possible air flow. In liquid cooling, the engine cylinder is jacketed and a liquid coolant is circulated between the cylinder and the jacket. The coolant is then circulated to a heat exchanger where air flow is used to transfer heat from the coolant to the air. Discuss advantages and disadvantages of both arrangements and quantify your results with calculations. Considerations include: weight, cost, rider comfort, center of gravity, maintenance requirements, and compactness of design. As a baseline, consider a two-cylinder engine with cylinders of 8.5 cm diameter and 10 cm length producing a maximum of 60 kW at a thermal efficiency of 15%. Assume that the outer wall of the cylinder operates at a temperature of 200°C and that ambient air is at 40°C.