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Tenba plumped for a roll-close top section for this bag, which gives some flexibility in capacity

While were on the chin strap, Ill also note there is a piece of felt attached to one end of the buckle thats meant to sit between the wearers chin and the buckle

You may need to wiggle, twist, and pull to get them out

Typical Lifespan: 8,00020,000+ miles (roughly 510 years for most riders) Mid-Drive Maintenance Chains wear faster Belt drives solve this entirely Motors are sealed and require no internal service Controller settings may need occasional tuning Hub Motor Maintenance Fewer drivetrain stresses Can fail under heavy load or overheating Less climbing efficiency = more thermal strain Signs of Motor Wear Reduced torque Unusual magnet noise Delayed assist activation Overheating on hills Mid-drives generally outlast hub motors simply because they operate more efficiently and stay cooler