Fitting a Yanmar and Aquadrive

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Inboard engine installation details:

Drawings:

The following drawings show the engine layout both with and without the Aquadrive fitted. Obviously, with the Aquadrive in place the engine can be positioned on a horizontal plane, making it slightly lower. Please note that the dimensions are approximate - I have found that hull thickness and bulkhead positions vary between boats. On my own Corribee the drawings are accurate to around 30mm, mainly because of the difficulty of measuring the lines accurately and of relating the outside dimensions to the inside dimensions.

However, the drawings show that, with the engine in the position shown, tucked under the bridge deck at the front of the cockpit, there is about 400mm between the gearbox output flange and the point at which the shaft tube enters the hull. This should be enough to install an Aquadrive (if you so wish) along with a stern gland.

A GRP stern tube is recommended (unless you already have an alternative installed) as it is so easy to bond into place.

engine Fig 1(above) Yanmar with conventional prop shaft and rigid coupling.

yanmar and aquadrive Fig 2 (above) Yanmar 1GM10 with Aquadrive prop shaft coupling.

www.corribee.org.uk - inboard engines