2B & 3B Geared Folding Sailboat Propellers
Saildrive and Inboard Styles
Seahawk
Australia and Austral Propellers have joined forces to bring you the
"SLIPSTREAM" range of Geared Folding Sailboat Propellers.
For racing and social yachts, streamlining and smoothness of design is
of major importance. Unwanted drag under sail can result from the use
of two or three bladed fixed propeller installations.
Slipstream Folding Sailboat
propellers achieves the best of both worlds, providing both smooth flow when
sailing and efficient forward and reverse propulsion under power.
Centrifugal force provides easy synchronized
opening of the propeller blades when under engine power. Alternatively, under
sail, the water flow closes the blades, significantly reducing drag. The gearing
avoids the vibration and operational problems commonly associated with one blade
moving independently of the other.
|
Design Features and Advantages: |
|
| * Synchronized geared opening and closing |
* Propeller operates forward or reverse |
| * Folded position minimizes drag when sailing |
* Propeller design is efficient under power |
| * Less drag than 2 or 3 blade fixed propellers |
* Both saildrive and inboard styles available |
| * Saildrive models feature 'fail-safe' cushion hubs |
* Large blade area for excellent thrust |
| * All stainless steel construction |
* All wear components are user-serviceable |
| * Full installation kit with each propeller |
* Five-year warranty against material & manufacturing defects |
| | |
| Hub length for shaft size and
taper |
| |
12:1 English |
10:1 Metric ISO |
| Shaft |
"A" |
"B" |
Shaft |
"A" |
"B" |
Shaft |
"A" |
"B" |
| 1" |
135 |
70 |
1" |
125 |
60 |
25mm |
125 |
60 |
| 1-1/8" |
140 |
75 |
1-1/8" |
125 |
60 |
30mm |
145 |
60 |
| 1-1/4" |
145 |
80 |
1-1/4" |
145 |
80 |
35mm |
153 |
88 |
| 1-3/8" |
153 |
88 |
1-3/8" |
145 |
80 |
40mm |
153 |
88 |
| 1-1/2" |
153 |
88 |
1-1/2" |
150 |
88 |
|
|
|
All Dimensions are in Millimetres
| Blade Size |
"C" |
| 14" |
165 |
| 15" |
178 |
| 16" |
190 |
| 17" |
203 |
| 18" |
215 |
| 19" |
228 |
| 20" |
240 |
More Information and Dimensions
Seahawk Slipstream Brochure
The Autostream propellers automatically adjust to a fully
feathered position under sail and can be used for both forward or reverse
propulsion. Manufactured using CNC technology to ensure accuracy and quality; a
full range of spare parts are also available, including; replacement sacrificial
zinc anodes, bearings and saildrive bushes. Pitch can be easily externally
adjusted to the desired setting, without dismantling. Propellers are
manufactured in duplex stainless steel for exceptional durability and increased
performance through the use of finer blade sections.
