What are some key factors to consider when evaluating the efficiency of different motor brands for an ebike, and how can you balance the trade-offs between power output, weight, and battery life to choose the best motor for your specific needs and riding style?
Are there any specific metrics or benchmarks that can be used to compare the efficiency of different motors, such as watts per kilogram or miles per watt-hour, and how do these metrics relate to real-world performance?
How do different motor technologies, such as geared hubs, gearless hubs, and mid-drives, impact efficiency, and what are the advantages and disadvantages of each type?
Are there any emerging trends or technologies in ebike motors that could potentially offer significant efficiency gains, such as advanced materials or novel designs?
What role do factors like rider weight, terrain, and desired speed play in determining the optimal motor efficiency for an ebike, and how can riders use this information to make informed decisions when choosing a motor or upgrading their existing ebike?