camshaft, pintle, pushrods, axle, bevel gear, drivetrain, gearset, bushing, shifter, spline, pushrod, pawl, supercharger, drawbar, torque converter, epicyclic, torsion bar, tappets, sheave, countershaft, dampers, sprocket, spindle, hydraulic pump, derailleur, servo, rotary actuator, synchromesh, torsion, stators, coupler, idler pulley, pulleys, flanges, pistons, gooseneck, rotor, wheelset, automatic transmission, compensator, actuator, detent, solenoid, radial, pto, piston rod, crankshaft, torque, servomotor, idler, stabilizer bar, tailstock, trunnion, windings, coiler, flywheel, tensioning, swage, strakes, tonneau, synchronous motor, kickdown, gearbox, gearshift, mudguards, turbocharger, bimetal, fitment, toroidal, calipers, brake, airbrake, clutch pedal, coil, crankcases, fenders, collet, tach, actuation, inlet manifold, retarder, gear lever, hydraulic brake, valving, couplings, coaster brake, winch, clevis, commutator, impellers, antilock, alternator, torque wrench, handwheel, aileron, turbo, thermistor, capstan, calliper, dihedral, chassis, gear, gears, pulley, screw, rail, pinions, bolt, piston, stair, wheel, latch, main, flange, plunger, roller, bevel, crank, lever, valve, thermostatic, automatic, propelling, driven, gyroscopic, shaft, socket, vane, compensating, electromechanical, nozzle, pneumatic

lantern pinion, lantern wheel, primary, primary feather, primary quill

lantern pinion, lantern wheel, rack, rack and pinion, ungeared

bird, wing

cogwheel, confine, disable, disenable, feather, gear wheel, hold, incapacitate, plumage, plume, restrain

flight feather, pennon, quill, quill feather, shackle