Many cyclists considering Pedal Electric Bikes wonder how these bikes perform when ridden without motor assistance, like a traditional acoustic bike. Understanding the factors that influence pedaling ease is crucial, especially for those planning rides where they might rely on their own power.
One common question revolves around motor resistance. It’s often assumed that mid-drive motors are the only viable option if you intend to pedal without assistance. While motor type does play a role, the actual resistance from modern motors is generally minimal. Anecdotal comparisons suggest that older Bosch motors might have had a noticeable drag, likened to a rusty chain. In contrast, Yamaha motors feel more like cheap pedals in terms of resistance, and Brose (Specialized) motors are often compared to well-maintained, lubricated pedals. Unless you are exceptionally sensitive to drivetrain efficiency, the motor drag itself is unlikely to be a major impediment on most newer pedal electric bikes, excluding older Bosch systems.
However, focusing solely on motor resistance overlooks other significant factors that impact how a pedal electric bike feels when unpowered. The components and setup choices often made on e-bikes for comfort and robustness can introduce more inefficiency than the motor itself.
Consider tire choice: Many e-bikes, particularly commuter and mountain bike styles favored for their ruggedness and wider tires, come equipped with tires designed for grip and comfort, not necessarily low rolling resistance. These fat, grippy tires, often run at lower pressures to enhance comfort and traction, inherently require more effort to pedal, regardless of motor engagement. This is a trade-off many e-bike riders accept, as the motor assistance compensates for this inefficiency.
Riding posture also evolves on pedal electric bikes. Over time, riders often adopt a more upright and relaxed position for enhanced comfort. Suspension might be set softer to further smooth out the ride. While comfortable, these adjustments shift weight distribution and can reduce pedaling efficiency compared to a more aggressive, aerodynamic posture common on traditional bikes. The heavier weight of pedal electric bikes, often significantly more than a non-electric counterpart, further contributes to the difference in feel when pedaling without motor assistance.
To mitigate these factors and optimize the experience of pedaling without full motor support, many e-bike systems allow for customization of assistance levels. By setting a low assist mode, like 50% in “eco” mode, riders can simulate the feel of a highly efficient traditional bike. This approach allows riders to enjoy extended range and engage in a workout while still having the option of motor support when needed. For instance, riding with a 50% assist level and properly inflated tires can yield impressive ranges, highlighting how much energy is typically expended overcoming tire resistance and ergonomic factors on a standard e-bike setup.
Ultimately, while motor resistance is a factor to consider, especially with older models, the overall ease of pedaling a pedal electric bike without power is more significantly influenced by tire choice, riding position, and the inherent weight of the e-bike system. Test riding different models and considering your typical riding conditions will provide the best insight into how a particular pedal electric bike will perform under your own power.
