Nt Consulting International Pty Limited

Stephen Tapper

Richard Terrence Tamba

Graham Charles Mowbray

Paul Donnelly

Dennis Albert Rumble

Paul Anthony Donnelly

Richard Terence Tamba

Mariusz Dudzik

A two speed transmission system mounted for driving a marine craft comprising: an input shaft coupled in direct connection with a driveshaft of an engine of the marine craft; an output shaft coaxial with the input shaft coupled in direct connection with a driveline of the marine craft; a first gear train for transmitting drive at a fixed first gear ratio; a second gear train for transmitting drive at a fixed second gear ratio; a first friction clutch operable to engage/disengage the first gear train; and a second friction clutch operable to engage/disengage the second gear train, wherein in shifting between the first gear ratio and the second gear ratio one of the friction clutches is disengaged using controlled slippage while the other friction clutch is engaged using controlled slippage.

Dual speed transmission

Growing community of inventors

New South Wales, Australia

Stephen Tapper