Small 29:1 Cannon EN22 motor and gearbox with 3/16in output gear for small 7mm/ft locos This is a multi stage skew / std gear box giving lower friction than std worm and hence more power output from the same motor

Small 38:1 Mashima 1628 motor and gearbox with 3/16in output gear for small 7mm/ft locos This is a multi stage skew / std gear box giving lower friction than std worm and hence more power output from the same motor

Small 33:1 Coreless motor and gearbox with 1/8in output gear for 4mm/ft or small 7mm/ft locos This is a multi stage skew / std gear box giving lower friction than std worm and hence more power output from the same motor. Equiv to Portescap RG4