How do you maintain a saildrive?
Oil change
- Regular checks of saildrive transmission oil are important.
- Manufacturers usually recommend that the transmission oil is changed annually, which can only be done ashore by draining the oil from the base of the leg.
- Always use the manufacturer’s recommend oil and be careful not to overfill the system.
Are sail drives good?
Well-known member Advantages of sail dive: Close coupling of engine and drive no alignment or vibration problems and smaller installation. Coupling of engine, drive and prop inherently stronger and less prone to failure. Propellors are often deeper in the water, less prone to fouling and better drive.
What is the advantage of a sail drive?
The saildrive has several advantages over the traditional sailboat transmission: smaller horizontal size, no stuffing box to maintain, and the propeller is mounted horizontally instead of at a downward angle. Saildrive also reduces propeller walk, reduces vibration, and is more efficient.
Do sail drives have prop walk?
Saildrive systems have a horizontally mounted propeller shaft and therefore they do not create prop walk.
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.
How much does a saildrive cost?
It seems many owners are going 10 years and longer before replacing the outer and inner bladder seals on their saildrives. Cost is probably the driving reason for the delay. Pricing that I found varied from $2,500 to $4,000, depending upon the drive’s location and how it was installed.
How long do saildrive anodes last?
The Saildrive leg anode can last 2 or 3 seasons without change.
Do sail drives rotate?
The saildrive rotates extremely fast, assisted by an electric engine. The rotation of the pod to 180° means that the lifting propeller can deliver the same speed in both forward and reverse.
What is better a sail drive or shaft drive?
Sail drives generally cost more to replace than shafts. 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.
How do you counteract prop walking?
Twin-screw boats typically neutralize prop walk by having one right-handed propeller and one left-handed prop; they walk in opposite directions, canceling out the effect of each. The initials RH (for right-handed) or LH (for left-handed) are usually stamped on the prop, along with its diameter and pitch.
How do I stop prop walking?
The key to backing up straight or turning against prop walk is to get way on gradually to get water flow over the rudder. You may be tempted to hit reverse hard and then back off, but that initial burst of power will pull the stern over to port.
What is Volvo saildrive?
The Volvo Penta Saildrive is a highly efficient engine, drive and propeller package for responsive and powerful maneuvering 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.
When Should aluminum anodes be replaced?
The recommended period for changing the anode in your hot water system is usually every 3 to 4 years. This will vary across different areas and applications. Alternatively, it can be replaced when half of it has been corroded.
When should sacrificial anodes be changed?
Most water heater manufacturers will recommend inspecting the condition of the sacrificial anode every one (1) to three (3) years and replacing it when it has been consumed more than 50%. This is especially true if you have hard water or use a water softener.
What causes prop walk?
Propeller walk is caused by the water, moved by the propeller in an axial direction and in a rotation. The water, coming from the propeller, gets a cone shape, widening when it leaves the propeller. If the rotating water cone contacts the ship’s hull, a sideways force is generated.
What is the difference between prop walk and prop wash?
Prop walk occurs most frequently in reverse. You will have to be in motion for steerage to return to the wheel enough to navigate without prop walk taking you for a stroll. Prop wash happens when changing from reverse to forwards or if you suddenly accelerate from a dead stop.
What’s the difference between a shaft drive and a sail drive?
Straight shafts are always louder and produce more vibration than sail drives. In larger cats with long sterns and space the engines and shafts can remain aft of the sleeping quarters in separate sound insulated compartments. On smaller cats this is generally not the case.