|
Lazzara
Yachts has used the services of JEI (Janelle Engineering, Inc.) during
sea trials of the last five 80s, as well as for the sea trials of other
vessels it currently builds. JEI’s PowerMate system records and
graphs torque, thrust, horsepower, rpm, trim and heel angles, speed, voltage,
amperage, engine temperatures, and GPS positioning without restricting
engine horsepower. During a sea trial a JEI engineer secures wireless
strain gauges to the prop shaft(s), the gauges communicate with a laptop
nearby, and that laptop communicates with another laptop on the bridge,
where the engineer conducts actual testing.
According
to Lazzara, accurate shaft horsepower measurements taken from JEI’s
portable dyno—as opposed to theoretical fuel, horsepower, and other
numbers supplied by engine manufacturers—are invaluable for specifying
props and diagnosing performance problems like the one we encountered
during our PMY sea trial. —B.P.
Next page >
Lazzara 80 Specs > Page 1,
2, 3, 4, 5,
6, 7
|