Which is better sail drive or shaft drive?
Straight shafts produce less effective horsepower at the prop because the prop is at an angle. On a typical 40 foot horse power engine you lose 3 to 4 horse power over a cat with sail drives. The less the prop is angled down the better the performance on a straight shaft.
What is the difference between sail Drive and shaft drive?
A saildrive is a transmission system for a boat whose inboard engine has a horizontal output shaft. The difference between a saildrive and a Z-drive is that a saildrive’s propeller shaft is fixed in place, pointing aft, whereas a Z-drive’s propeller shaft can be rotated to any azimuth.
What is Volvo sail Drive?
The Volvo Penta Saildrive is a highly efficient engine, drive and propeller package for responsive and powerful manoeuvring that will get you where you want – for those times when the wind has left your sails. Sailing may be all about the natural elements and catching the best winds.
Are Saildrives any good?
My experience during on-the-water test comparisons has shown that saildrives run significantly quieter and with less vibration than conventional shaft systems. Less noise and vibration are things that make life on board a much more pleasant experience when motoring.
What is a Yanmar sail drive?
Type SailDrive, Control System. The YANMAR 4JH80 SPP Steerable Propulsion Pod takes maneuvering sail yachts under power to the next level. It unites YANMAR’s advanced 4JH80 common rail marine diesel engine and ZF Marine’s innovative steerable saildrive technology into one fully electronic joystick control.
What is a shaft drive boat?
A boat with a shaft drive has the engine mounted inboard, with a shaft through the hull driving a propeller. Shaft drives may have the engine mounted in a few different positions, including (but not limited to) middle and rear. A rudder behind the propeller steers the vessel.
What is Yanmar sail drive?
What is a cutlass bearing?
Shaft Bearings are designed to be water lubricated and are also known as Cutlass Bearings or Cutless Bearings. They are installed in the stern tube, or bearing housing and support the propeller shaft. Beneteau and Jeanneau shaft bearings consist of a rubber sleeve with a collar at one end with no outer casing.
How do I check the oil on my saildrive?
On the Volvo Penta saildrive the gear case check and fill point is located inside the boat at the very top of the reverse gear assembly. This may be very hard to get to on your boat, but the red handle shown in the center of the photo is the oil dipstick for the transmission (reverse gear).
What are the different drives on a boat?
Summary
| Drive Type | Advantages |
|---|---|
| Inboard Shaft Drive | Maintenance when moored vs. stern drive Reliability Engine output potential |
| Outboard | Handling Maintenance Replacement Boat Design Performance Efficiency (fuel) |
| Pod Drive | Ease of use (joystick control) Efficiency (fuel) Engine output potential |
What is the difference between direct drive and V-drive?
V-Drive Overview: Direct-Drive boats place the engine in the center of the boat to minimize the wake produced. V-Drive boats place the engine in the rear to create a bigger wake for rider performance.
How long does a cutlass bearing last?
We generally keep our boats 10-14 years and have never had a cutlass bearing fail. Keep your props tuned, don’t strike submerged objects, and they will last a long time.
Which is better a sail drive or a straight shaft?
On a typical 40 foot horse power engine you lose 3 to 4 horse power over a cat with sail drives. The less the prop is angled down the better the performance on a straight shaft. That usually means positioning the engines quite forward of the sterns.
What’s the difference between Yanmar and Volvo boats?
Volvo electrically isolates their drives from their engines to minimize the chance of any electrolytic, more commonly known as “stray current” corrosion, occurring. Yanmar does not, and so one of the potential issues here occurs whenever your boat is plugged into shore power.
How is a sail drive different from an outboard engine?
It’s a bit different in the sense that unlike an outboard engine or inboard/outboard (IO) set-up, the engine exhaust is not exiting the boat via the drive leg, but rather through the hull just like with a conventional drive system. However, raw-water intake for engine cooling is drawn up through the saildrive leg, just as with an outboard.
How much does a sail drive leg cost?
The typical drive leg for a 40 to 50 foot cat is between $3,500 and $5,000 dollars. Sail drives legs must always have good zinc protection or there is a danger of the shaft corroding. Sloppy zinc inspections can lead to the destruction of sail drive legs.