Systems+Engines

Two speed propeller

by Nigel Calder, Posted May 18, 2009
Black clouds bearing cold rain showers are racing across the sky. The VHF radio is broadcasting gale warnings. This is not the day to be testing propellers, but nevertheless we are headed out of a marina near Aarhus, in Denmark, on a Bavaria 42 equipped with a Gori three-bladed folding propeller.The three- and four-bladed Goris are unique in the propeller world. They look much like any

Ask Sail: Straight and True

by Don Casey, Posted December 2, 2012
Before I re-launch the boat should I also have the shop check and true the transmission output shaft to its flange? This is a lot more work, but I’m prepared to do it to get things lined up properly.

Hybrid Power Keeps Going

by Joseph Huberman, Posted March 20, 2006
The diesel-electric hybrid as an auxiliary power source for sailboats has moved from the laboratory into the water. Though still in early development, it has advantages including fuel efficiency, ease of handling, responsive motor control, low sound levels, immediate-use capability, and, on some systems, power regeneration.I have a Solomon Technologies motor and a Glacier

GPS system questions

by Peter Nielsen, Posted May 20, 2009
The Government Accountability Office’s report last week on the parlous state of the Global Positioning Satellite system should set alarm bells ringing. When a body like the GAO warns that the GPS system is in crisis, all of us – not just sailors – need to take notice. GPS technology is so omnipresent in modern life that few areas of transportation remain unaffected by it.The GAO report
"Can you give me some ideas on what might cause excessive white smoke in the exhaust of a 2-year-old Yanmar diesel?" Nigel Calder replies.
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