The couplers and pedal couplers action is realized through back falls under the keyboard.

The back falls revolve on their axis, fixed to three welded aluminum frames, articulated by kneecaps and activated by three control pedals.

The 30 pedal coupler I/ped back falls

The 3 back falls sizes : II/Péd - I/Péd - I/II

The aluminum frame - Drilling for the points of pivot axes

Jig to insert pins at the same height

Pins installed

Pins

Punchings, made of red scarlet key bushing cloth (casimir)

A punching is placed at the bottom of every pins to keep the mechanism quiet

Installation of the back falls

Insertion of the second punching and one collar to maintain the back falls

The couplert II/I back falls installed on the aluminum frame

The frame will be connected with the pedal with this hole

The three blocks of pivot of couplers pedals

The mecanic of the blocks

Pedal Roller Board

Back of the mechanics

The three coupler pedals

The three coupler pedals installed

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