Bear with me if this sounds strange:
Has anyone created a "swing-in" motor mount that is PARALLEL to the prop shaft and pivots in to engage a gear tooth in the prop shaft?
Assume your main power plant fails.
In the prop shaft, there is a coupling between the aft stuffing box and the motor/transmission.
I am considering the following scenario.
1) Open the shaft coupling, and remove the aft-facing half of the coupling. Slide a gear over the shaft, and re-attach the motor coupling to the shaft. Re-attach the two halves of the coupling together...At this point you have a spinning gear tooth on your prop shaft.
2) Now, in parallel to the shaft, install an electric motor that pivots/tilts inwards towards the shaft and engages the gear.
3) In case of main power plant failure, you just undo the motor coupling, pivot in the electric drive, and the prop shaft now turns through this gear system....Or maybe the backup electric motor is coupled to the gear on the prop shaft via chain/belt?
The reason for all this is that the main power is a steam engine and if it stops operating, I'm considering a backup electric drive system. There is no opportunity to simply drop a Torquedo outboard alongside the hull (round fantail)....sound plausible or just too weird?
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