11. New controllable pitch propellers, propeller ducts, reduction gears and clutches were provided by Ulstein. 12. Later versions of the Bristol Titan also used a Farman-style reduction gear produced by Gnome-Rh�ne. 13. Two days later, a damaged reduction gear forced her into Apra Harbor, Guam, for repairs. 14. The motors drive a wooden two-bladed propeller via a 3 : 1 bicycle-chain reduction gear . 15. A reduction gear turns the propeller at 90 rpm. 16. Also, at that time, " Skipjack " had a noise problem in her reduction gears . 17. This used two gears on a layshaft behind the headstock, giving a double reduction gear . 18. The reduction gears that drove the ship's four propeller shafts still glisten under bolted hatches. 19. The 18R was available with or without a Farman ( bevel planetary ) reduction gear . 20. Each diesel engine drives one controllable pitch propeller via a two speed main reduction gear .
