Running on one engine – possible damage to gearbox?

[Sheppy]

Thanks Hwmbo for the thread, very interesting and quite surprising - well for me anyway...

One of the top reasons I'd like twin's over a single 'was' the apparent redundancy it gave you but if you're restricted to around DS speeds anyway then I'm inclined to agree with Daka!

For reference as asked:
Sailing boats either lock their props, some turn sideways, while most others simply fold in with the current.

So for me, having a decent aux giving around 6knts isn't perhaps so bad after all. And of course I use less fuel

That said, most of this thread is based on shaft drives, is it a similar problem for stern dive units?

 

[omega2]

no problem to freewheel the gearbox, much like a motor car, just take it steady, we cannot get better than 8 knots with one engine stopped. It requires 25mph to get an auto box in a car to be able to bump start it.

 

[scottie]

Sailing boats traditionally had water inlet with a grid on the back whilst power boats were of a scoop design with grid at front .
I recall having an interesting conversation at earls court with an owner who hade wrecked an engine by running on one engine to save fuel and filed the engine with water forced up into it.
Jabsco type water pumps can let water past if worn.
Trolling speed is less than normal tick over if defined by use of a trolling valve built into gearbox.

Some posters will of course troll at any speed they can get of with.