A look at the MTB servo motor
Small worm gearboxes are a staple of the modern MTB.They’re also not new.The first model, introduced in 1959, was a two-speed, two-arm servo gearbox that had a motor in the center and a shaft in the arm.This was the first servo-powered gearbox.The second version, introduced with the 1972 MTB, used a motor that spun the…