Electric Auxilliary Propulsion
The primary candidates for electric auxilliary propulsion were Electric Yacht (Golden Valley, MN) and Torqeedo (a German company with US distribution) with both offering a 10kW solution. The Electric Yacht is a drop in replacement for the diesel. Torqeedo offers a pod drive.
Auxilliary Being Replaced
The diesel auxilliar being replaced is a Universal Atomic Four Diesel which is likely to be original. Marketing literature from that period (or at least photocopies) are available. Technical documentation is also available. Universal is now part of Westerbeke.
This motor was very well cared for. During the marine survey it was briefly run. It started easily twice and ran smoothly and quietly (as quiet as diesels get) with clear exhaust. The diesel was also run for a few hours after purchase when transiting the Cape Cod Canal and in tight manuevering in slips areas. Other than vibration and the usual smell of diesel, the engine ran well. A separate web page covers the Diesel Removal prior to installing the electric auxilliary.
Products Considered
Electric Auxilliary Motor Selection is covered in another web page. A QuietTorque 10.0 Sport made by Electric Yacht was purchased but is not yet installed.
Expected Performance
It will be interesting to compare the performance predicted by Electric Yacht to actual. When purchasing from Electric Yacht they take hull design parameters such as dimensions, displacement, type of keel, and with that generate a brief report with expected performance with a recommended battery capacity. The Expected Performance of the Electric Auxilliary web page provides additional detail.
Installation of the Electric Auxilliary
Installation of the new electric auxilliary propulsion is covered in another web page. Removal of the old diesel auxilliary is also covered in a separate web page.