Its often claimed that chain lube can have a noticeable impact on the performance of a bikes suspension, but the exact mechanisms behind this are rarely discussed. While its clear that a well-lubricated chain can reduce friction and prevent wear on moving parts, how does this translate to improved suspension performance?
Is it simply a matter of reduced vibration and oscillation being transmitted through the frame, or are there more subtle effects at play? For example, does the reduced friction in the drivetrain allow the suspension to move more freely, or is it the other way around - does the suspensions movement affect the chains tension and thus its lubrication requirements?
Some proponents of regular chain lube application claim that it can even affect the suspensions damping characteristics, allowing for more precise control over the bikes movement. However, this seems counterintuitive, as the damping circuits are typically isolated from the drivetrain.
What are the actual physical mechanisms by which chain lube improves suspension performance, and how significant is this effect in practice? Are there any specific types of chain lube or application methods that are more effective in this regard, or is it simply a matter of keeping the chain well-lubricated in general?