Jockey wheel: one among two little sprockets of your rear derailleur that guides the chain on to the cassette Hanger: part of frame or an attachment towards the frame to which the derailleur is hooked up (see Derailleur hanger) Triple engines are characterised by high middle power and tonked high-speed https://sergiojnpss.jiliblog.com/91711244/bike-engines-copyright-for-dummies