Can 165mm cranks genuinely improve a riders performance in long races, or are they simply a niche product catering to a specific subset of cyclists. Since 172.5mm and 175mm cranks have long been the standard for road and endurance riding, the adoption of shorter cranks seems counterintuitive. However, some argue that shorter cranks allow for a more compact pedal stroke, resulting in greater efficiency over extended periods.
If we consider the biomechanics of pedaling, its true that a shorter crank length produces less angular displacement, which may indeed contribute to a reduction in fatigue. Furthermore, with the increased emphasis on comfort and ergonomics in modern bike design, could 165mm cranks be a key component in achieving optimal rider positioning and reduced strain on the knees and hips.
One potential issue with adopting shorter cranks is the impact on power output. If a rider is accustomed to generating power with longer cranks, switching to shorter cranks might lead to a noticeable decrease in watts produced. However, some proponents of shorter cranks argue that the increased cadence and efficiency gains can offset this power loss.
Looking at the current crop of professional cyclists, few seem to opt for 165mm cranks in long races. Does this mean that the conventional wisdom surrounding crank length remains correct, or are pros simply sticking with what they know and love. Are there any studies or real-world data that can definitively say whether 165mm cranks offer an actual performance advantage in long-distance racing.
What are the considerations that go into selecting the optimal crank length for endurance events, and how do manufacturers factor this into their product design. Are there other factors at play, such as rider size, riding style, or specific course characteristics, that would influence the decision to use 165mm cranks in long races.