Raphi Giangiulio's Homemade Pipe Organ

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Pedal Windchest

The pedal windchest sits on the floor at the back of the organ. The action comes into the chest horizontally and the pallets sit vertically. The pipes and conveyance tubes come out the top of the windchest. The order of the windchest is as follows:

The first octave alternates left and right starting on the outside and working towards the center. These pipes will be mounted off the windchest and will form the sides of the organ. Tenor C jumps to the middle and the pipes alternate chromatically left and right working outwards through C#. These pipes are all mounted directly on top of the windchest. The top four pipes are stuck between EE and C. These pipes will be mounted off the windchest on a block inside the organ.

Here's a photo of the windchest on it's back with the bottom removed:

Here are some photos of the pallets:

Here's a photo of an open pallet. The collar on top of the guide pin prevents the pallet from opening too far and coming off of the guide pin. The pallets cover holes that have been routed into a piece of plywood. That piece of plywood covers channels that have been built up with .25 thick plywood.

Here's a photo showing the back of a pallet. There is a collar with a spring that applies a light pressure to the back of the pallet. I saw a figure in the Laukhuff catalog and it looked like this was how they did it.

Here are some photos of a pallet. The bottom of the pallet is covered with a felt and leather material I bought from OSI.

Here's a photo of where the action enters the windchest. The action wires pass through a brass plate that is held in place with two strips of wood.

The following are pictures showing the grooving on the top of the windchest. This is the left side with one groove to get the air passage for pipe AAA# out from underneath C#.

This is the left side with the top plate in place:

This is the right side with grooves forward for pipes D-F and a groove for pipe BBB to get out from under pipe C. The large hole on the bottom right is the air supply hole for the windchest. This will receive a 2.00 conveyance tube from the bellows.

This is the right side with the top plate on.

Here's a photo of a pallet spring:

Here's a photo down into the air supply hole:

Here's a photo showing the conveyances to some of the offset pipes:

And finally here's the pedal windchest completely assembled: