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Apparent Wind Indicators

Great Hawk Assembly Instructions

Ensure you have all the correct pieces:

1 x Vane Arm 1.
1 x Left Reference Arm 2.
1 x Right Reference Arm 3.
1 x Aluminium Support Rod 4.
1 x Locking Block 5.
1 x Mast Clamp 6.
1 x Locking Pieces 7.
1 x Mast Clamp Crane Adaptor 8.
1 x 8mm bolt, nut and washer
5 x Self tapping Screws
 

The Vane Arm should be perfectly balanced when it leaves the factory.

Test this by putting the Support Rod into the vane arm and just slowly lift it off the table. The Vane Arm should remain parallel to the table
 

If either end of the Vane arm drops quickly you will need to reposition the Counter Weight.

Gently bend the front of the Vane Arm until the counter weight lifts up. Slide it in the necessary direction and retest.

When the position of the Counter Weight is correct ensure it is securely pushed into the Vane Arm.

Select the Locking Piece required for the angle of your Reference arms (55, 60, 65 degs or friction only for any angle).

Push the reference arms into the locking piece so that the Flats on the Reference Arms Line up with the ridge on the locking piece.

Except the friction only any angle one which has no ridge.

Now push the Reference Arms into the locking Piece.
 

Screw the 2 x 15mm self tapping screws up into the locking block to hold the Reference Arms in securely.

The Locking Block, Locking Piece and the Reference Arms should now be fully assembled as shown here.
 

Place the Vane Arm in to the Locking Block such that the lip on the Vane Arm fits into the slot between the Locking Block and Locking Piece.

Push the Support Rod needle up through the locking Block and into the Vane Arm.

Hold the Locking Block and keep pushing the Support Rod until the Vane Arm is lifted off the locking block by 1mm.

The Vane Arm should now rotate freely with minimal friction.

When the set up is correct tighten the Locking Block Screw to fix it in place.
 

The Mast Clamp can be screwed to the mast using the 2 screws provided. Drill 2 holes with a 3.5mm drill.

The Great Hawk can then be pushed into the Mast Clamp and tightened using the large screw and a normal screw driver.

It can also be easily removed with a screw driver.

Many Masts have a hole or series of holes on the Crane for attaching Wind Indicators or Antennas.

The Great Hawk comes with a Mast Clamp adaptor that can be bolted through a hole.

Then simply screw the Mast Clamp down into the Adaptor with the screws provided and use the Mast Clamp in the normal way.
 

The Mast Clamp is also designed to be attached the side of your mast if required.

The Support Rod may need to be bent so that it stands vertically when the boat and mast are in their neutral position.

You may need to loosen the Locking Block and rotate it until the reference arms are equal distance either side of the boats centre line.

Ensure the locking block is re-tightened and the Vane Arm is still clear of the Locking Block.

 Tel: +44 (0)23 92463864   Email: sales@hawkmarineproducts.com