Cable routing frame triangle

Internal cable routing through a bike's front and rear triangles improves aesthetics, protects cables, and can enhance performance, but requires careful planning and the right tools.Front Triangle RoutingInternal routing in the front triangle involves running cables through the head tube, down tube, and sometimes the seat tube. This setup hides cables for a cleaner look and reduces exposure to dirt and damage, improving durability and aerodynamics . Key considerations include:Frame Compatibility: Only frames designed for internal routing can accommodate it; retrofitting is generally not possible .Cable Paths: Plan entry and exit points carefully to avoid sharp bends that could impair shifting or braking performance .Tools: Use cable cutters, pick tools, and optionally magnetic routing kits to guide cables through tight spaces .Techniques: For tricky passages, a J-bend spoke or spare shift cable can help guide the housing through the frame .Rear Triangle RoutingRouting through the rear triangle (seat stays and chainstays) is more complex due to tight bends and limited space. Common approaches include:Full Internal Housing: Some frames allow continuous housing from shifter to derailleur, simplifying installation but requiring precise alignment .Partial Internal Routing: For hydraulic brakes or dropper posts, some builders route cables internally through the front triangle and externally along the chainstays for easier maintenance .Protection: Foam sleeves or frame protectors prevent rattling and reduce wear at contact points .General TipsPlan Before Installation: Map out all cable paths and check for potential friction points.Use Quality Components: High-quality cables and housing reduce friction and improve longevity.Maintenance: Internal routing may require more frequent service than external routing, so consider accessibility when designing the setup .Safety: Ensure cables are not pinched or kinked, as this can affect braking and shifting performance . By carefully planning cable paths, using the right tools, and protecting contact points, internal routing through both the front and rear triangles can provide a sleek, durable, and high-performing bike setup .