SPW’s Variprop Grand Performance (GP) feathering propeller for shaft and saildrives delivers high thrust and up to 14% reduction in fuel consumption, extending your cruising range and reducing CO2-emissions.
Aero Foil Shaped Blade
Variprop GP is the only feathering propeller with an aero foil shaped blade – the Gawn blade profile. The Gawn profile blade is more efficient, producing no vibration when motoring and very low drag under sail.
Independent External Pitch Adjustment
Variprop independent external pitch adjustment allows optimum control, maneuverability and safety.
Robust internal gearing with patented shock absorption
SPW’s patented SoftStop™ shock absorber lets you shift smoothly and extends the longevity of the whole drive.
Aero Foil Shaped Blade
Symmetric High-Tech GAWN Profile
Used primarily for high performance fixed pitch propellers in motor boats, for rudder profiles and in aviation, the GAWN profile of the Variprop GP blades reduces average fuel consumption by up to 14% due to higher thrust, depending on the number of blades.
Pitch Control and Shock Absorption
A. Independently adjustable external pitch control. Forward and reverse pitches can be changed in just seconds — even underwater.
Benefits: Custom fine tuning (in micrometer-small increments) of reverse thrust vs. prop-walk. (For most owners, eliminating prop walk is more important than maximizing reverse thrust.)
VARIPROP allows you to customize that balance for optimum control, maneuverability and safety. Independent fine tuning of forward thrust means that VARIPROP delivers the best possible performance (speed, thrust, fuel economy) in forward without compromising reverse performance – and vice versa
B. SoftStop™ shock absorber – Shock Absorbing Multidisc Brake (patented) built into the VARIPROP hub.
Benefits: Dramatically reduces shock loads on gearbox and drivetrain, permits shifting at higher speeds without damage, preserves preset pitches by eliminating hard limit stop impacts (the typical “clunks” of all others). The entire drive train benefits: longer cutless bearing life, minimized wear on gearbox, clutch plate, bearings.
