Dowty turbocraft manual woodworkers skin#
Dowty turbocraft manual woodworkers full#

One great advantage of this form of propulsion is the elimination of conventional underwater gear.

The marine jet not only supplies cooling water to the engine but also, by manipulating an on and off cock can be used to pump out the bilges. A hand, operated lever system moves a gate by which the jet stream is either fully cleared (ahead)* completely blanked (neutral) or deflected forward under the hull (reverse) j this eliminates the need for reversing gear normally driven by the engine. The unit is extremely quiet in operation and requires very little maintenance.ДЇull power is available on starting and the maximum progressive thrust gives the boat outstanding acceleration. The grid keeps out larger debris though the jet unit will pass small particles of sand and gravel. The reaction from the jet stream propels the boat. Propulsion is by an efficient two-stage jet unit which draws water into the turbine through a steel grid fixed flush with the bottom of the boat and is ejected through the transom. The reliability of the Zephyr engine is well established and the Ford Organisation offers a comprehensive servicing cover. The engine is completely water cooled, water being pumped direct from the marine jet unit through the sump to the manifold, circulated to the block, then to the exhaust pipe and out via the transom. in between 3,500 and 3,700 (approximately 70 B.H.P.), ensuring that the engine mil have a prolonged, active life. The Dowty Turbocraft is powered вЂњby a marinised Ford Zephyr MK 11 high compression engine (7:8:1) capable of developing 90 B.H.P. , M.I.Mar.E,, the well-known Naval Architect who designed вЂњMiss England IвЂќ, вЂњMiss England II and Sir Malcolm CampbellвЂ™s original вЂњBluebirdвЂќ. The design consultant for the Dowty Turbocraft hull is Mr.

Dowty turbocraft manual woodworkers full#

The engine cover is made in two parts, the top half being removable to give full access to the engine. The front bench seat is adjustable and the two occasional seats are reversible to give rear- facing for water ski observation. The design of the hull with its 10 degree deadrise at the after planing surfaces contributes to the вЂњboats ability to turn in its own length at top speed, and, as there are no underwater appendages, it can operate at high speed in water as shallow as 4 inches.ДЄ specially designed bow gives well cushioned riding qualities combined with dryness in disturbed waters.

Dowty turbocraft manual woodworkers skin#

No painting is required, as the skin and wall of the hull and deck contain colour pigment throughout. Rugged fibreglass construction of the hull, deck seats and engine cover, gives a high strength/weight ratio structure which is impervious to all in-and-out of water conditions, and lends itself to easy maintenance. Propulsion Unit: Dowty-Hamilton Marine Jet (2 stage) A 14вЂ™ 9вЂќ Dowty Turbocraft powered by a Ford Zephyr 2500 cc straight 6 cylinder engine being demonstrated on the River Thames in London, circa 1959.