Fitting a Yanmar and Aquadrive

(Page 1) (Page 2) (Page 3) (Page 4) Page 5 (Page 6) (Page 7) (Page 8) (Page 9)

Cutlass Bearing:

Cutlass bearing Trial fitting of the prop shaft (3/4" 316 stainless steel, from Lancing Marine, supplied with a 1:10 taper and machined with a keyway). My drawings indicated that I needed an overall length of 845 mm, but as the shaft was priced in multiples of 300mm I asked Lancing Marine to supply a 900mm and not to cut it, in case my measurements were wrong. The trial fitting showed that it needs 55mm cutting off at the gearbox end - oh well.

The photo above also shows the Vesconite bearing in the end of the tube, held in place by an M5 pan-head machine screw.

Fitting the Aquadrive:

Aquadrive

Halyard supply a drawing giving the dimensions of the thrust bulkhead needed. They recommend galvanised steel plate or grp for this, but 1" marine ply should easily be strong enough, and is much easier to cut to the correct shape. I sealed it with a coating of epoxy resin, and positioned it using a bed of Isopon P38 filler. It will be bonded to the hull with epoxy and glass cloth. Not shown here is a short length of hose which is placed underneath the ply to act as a limber hole, to allow water to drain through to the bilge, rather than lodging behind the ply.
The cockpit drains have been reconnected temporarily without the seacocks - I had to remove them for access but at this stage the boat wasn't covered.
The vertical plywood panels left and right are the sides of the quarter berths - you can just see where the original 6mm ply bulkhead was glassed to these at each side.

www.corribee.org - inboard engines