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Old 10-12-2015, 06:36 PM   #8
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City: Walnut Grove Ca
Country: USA
Vessel Name: Cary'D Away
Vessel Model: Hatteras 48 LRC
Join Date: Apr 2012
Posts: 887
Chain Drive with clutch

Originally Posted by twistedtree View Post
I know a couple of people with hydraulic drives on the main shaft as a backup propulsion system. Power is from a hydraulic pump on the gen set..
I worked on a small trawler with a generator driven hydraulic pump, and chain driven main shaft from a hydraulic motor. It had been abandoned at the coupling for whatever reason, the motor and pump had a forward and reverse control at the helm. With a generators constant RPM I could see some issues maneuvering. Everything worked except it was disconnected from the shaft. I was doing survey work that included aligning the engine and propshaft. At time I thought it looked like a good idea. The clutch and chain were a rusty mess, I would guess lack of maintenance is the reason the system was abandoned.
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