I too have heard that servo pendulum systems are more powerful then the Hydrovane. Is that true?
NEED SPEED FOR POWER – This is a complicated question because the quick answer is deceiving. The answer is yes, a servo pendulum does generate a lot of power – but only when the boat is moving quickly through the water. The converse is the case when the boat is moving slowly – it is deficient in power – a condition that is worsened if there is any excess friction in the system – stiff rudder, arduous connecting lines etc. We have too often heard owners of servo pendulums that are very proud of their units but advise that they only work, when off the wind, in a minimum of 15 or 20 knots of wind!! See our comments elsewhere on the ideal application of a servo pendulum system – high friction systems have significant weaknesses. LARGER BOATS – In comparison with a Hydrovane this power issue only becomes relevant for larger boats as the Hydrovane system is more than adequate for lighter boats. We suggest maximums of 40,000 lbs. or 18,000 kgs. for the Hydrovane – and always happy to tell you
