FORWARD THRUST - Large blade area, coupled with the ability to easily adjust the pitch, allows ‘fine tuning’ to achieve optimum performance & fuel consumption, comparable to a fixed blade propeller. Able to be assembled in either a right or left hand configuration, and with simple pitch adjustment the same propeller can often be used should a future driveline or
marine engine change require a different propeller setup. It is even possible to change rotation of the propeller in the water, should forward gear fail, allowing reverse to get you home in an emergency.
S1 - SHAFT DRIVE MODEL
REVERSE THRUST - As Autostream propeller blades rotate on their axes when changing direction, they present the same leading edge of the blade to the water in both directions, resulting in equal efficiency in forward and reverse. This results in far superior performance in reverse compared to folding, fixed blade and self pitching propellers. In most installations, stopping within a boat length from speeds of 5 knots or more is possible in an emergency. The reverse pitch can be set independently of forward, allowing a fine setting to reduce ‘prop walk’ and increase pulling power, increasing your ability to back off a sandbank, or move off faster in reverse, giving control with the rudder faster. DRAG FREE
SAILING - The high strength of the 2507 super duplex stainless steel blade allows a very thin design, symmetrical in section and virtually flat, resulting in minimal drag. This becomes most apparent in light winds, when it is most important. Typically sailing speed improvements of 10-15% are realised compared to a fixed blade propeller, as is an ability to point closer to the wind. Turbulence over the rudder is also reduced, giving an improved feel on the helm. Revised internal gearing and blade design means Autostream propellers stay feathered at sailing speeds in excess of 25knots, WITHOUT the need for a shaft locking brake.
Five Year
SUPPLIED READY TO FIT WITH... •
Additional spare Zinc Anode •
2 lengths of locking wire (1 spare) Warranty
•
Spare set of ‘O’ ring seals •
Propeller shaft nut •
Hex key for pitch adjustment •
Stainless steel shaft key stock screws •
Nut locking pin (+2 spares) •
Hexagon key for fastening screws •
Cartridge of grease FEATURES •
Spanner for pitch adjustment screw •
Instruction handbook locknuts •
S imple screw & locknut pitch adjustment • Shaft sizes to 1-3/8” / 35mm diameter
•
Autostream Cap requires no disassembly and can be performed (1-1/2” / 40mm with modification).
underwater. • ‘Super Duplex’ grade stainless steels Built to last.• Rugged construction using 316L & 2507 • Seals on blades & main gear Easy in water greasing Permananetly fitted • Retain grease to extend periods between
servicing and extend the propellers life. Propeller sizes 15”-20” (380-508mm) grease/zerk fittings allow easy greasing, even diameter. underwater. •
Replaceable bearings throughout The user • Superior propulsion astern over folding, fixedcan replace the bearings when the need finally blade and self pitching propellers.arises, unlike others that require replacement of •
The Autostream saildrive feathering propellerhas these additional features...
Sacrificial zinc anode with stainless steel core expensive blade or body components when they gives maximum electrolysis protection, will not wear. come loose over time, simple one nut changing. • Independent forward & reverse pitch • Each blade has 2 bearings for greater rigidity adjustment allowing optimum ahead & reverse resulting in smoother operation & increased life.pitch setting (typically finer in reverse). • •Fail Safe cushion hub. Ourunique cushion hub absorbs the
shocks, but it is not required to
transmit the drive. It cannot fail
and leave you without drive.•Standard SAE16/32 spline Suitsmost Volvo,Yanmar, Buhk, Sonicand Selva Saildrives units.•Improved shaft nut locking systemAutostream saildrive propellers use a special shaft nut &
locking screw allowing you to securely lock wire them
together. This combined with improved spline/shaft fit
ensures your saildrive propeller will stay secure. Assembly screws lockwired for security. • Rated to 80+HP (60+kw). • Backed by a FIVE YEAR warranty. • Errors & omissions excepted, specifications subject to change without notice.