Mast base

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Mast base of a transmitter mast

Mast foot refers to the reception center of masts of all kinds, especially of ship masts , towers or large umbrella stands.

Sailing boats

In smaller wooden sailing boats, the mast base is combined with the keel and is also referred to as such.

Surfboards

The mast base is the freely moving connection piece between the surfboard and rig when windsurfing .

From about 1967, the mast was as universal joint of Hoyle Swiss patented, was invented in thick rubber to 1982 a rotatable connection, the Power Joint is called. Compared to the universal joint, the Powerjoint offers a much lower risk of injury because it has no moving parts in which toes or fingers can be pinched.

In order to avoid getting caught between the power joint and the board, the so-called mast foot protector has become popular in recent years . This is a circular foam piece with a hole in the middle through which the Powerjoint is inserted.

The rig is attached to the upper end of the power joints with a lockable pin. Either a cup-shaped trim adapter, which is inserted into the mast, or a mast extension with a permanently integrated trim adapter is used as a connecting piece between the rig and the mast base . At the lower end, the mast base plate is also used with a lockable pin . This is in turn fixed in the mast foot rail of the surfboard with screwable spring nuts .

Mast foot for windsurfing - in the middle part made of rubber
Mast foot rail (left) with mast foot and sword box (right)
Mast foot rail (above), sword box (below) and mast (right)