Corsair Maintenance and Repair
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Corsair Sling hoisting instructions
Actually these are the hoisting instructions of the Oceanranger however this is basically the same boat.
Corsair Hatch Sizes
MK1 Corsair they are fore cabin and stern cabin 20" (51cm) square and the saloon 12 3/4" x 18" (32.5cm x 46cm). These measurements are the opening size of the plastic trim the aluminium hatch sits in.
Fuel Tank Removal
The Corsair Fuel tank is secured by 4 bolts. 2 at the forward bottom edge, the other 2 at the aft upper edge. Also held by the filler tube from tank to cockpit sole. Not too bad to get at especially if removing the engine. You should only need to slide the engine forward into the cabin, not remove it completely.
Can it be removed without moving the engine?
I removed the plywood panelling behind the engine which is in 2 parts, took out some of the floor supports (just 2x2 softwood) and the whole thing came out reasonably easily. So to answer my own question, it can be done without taking the engine out! There is also an off-the-shelf Tek-Tank which is nearly the same size - around £400 fully prepared for all the outlets and inlets.
Source WOA Forum Sep 8 2010
Linear Drive Autopilot
Pictures (Andrew Jones) show how a Raymarine Linear drive and rudder reference unit have been fitted on a Corsair 2, without the need to make up and fit a mini tiller to the top of the rudder stock.
An Aluminium plate was cut to fit on top of the steering quadrant and bolted in position with 4 bolts.
The linear drive was then fixed to the underside of the plate and the other end attached to the fore/aft mini bulkhead under the aft berth.
The bulkhead was itself strengthened to take the heavy loads exerted.
The rudder reference unit is attached to the cross member with a simple ply bracket (there are no significant forces exerted by the rudder ref unit). To 'true it up' and get it in the right position there is a mounting block which goes between it and the cross member. The other end is mounted on a small piece of wood screwed to the aluminium plate to simplify mounting and to level it up.