Air distribution - Renaissance Positive Pipe Organ Building

In this video series I will build a Renaissance style table positive pipe organ.
Topic of the video, air distribution.
It will have 2 manuals and two stops, a stopped 6' an open 3' and 1.5', with sounds suitable for the Renaissance/Baroque repertoire.
The challenge is that it will be ultra compact without sacrificing sound.
The construction will be traditional, with some modern concessions, such as the use of the electric fan and some technical materials such as ducts to carry the air, the aliphatic glue for some parts, etc.
If you want to support the project you can subscribe to the channel and leave a like.
Additionally, I also have a Patreon channel: patreon.com/nippocast

[@ireneuszpyrak961]

The idea of ​​music playing in the background, performed on the organ that is currently being built, is perfect. We hear its beautiful, noble sound and at the same time see the heart of the instrument. I think it's worth continuing.

[@nippocast]

Yes indeed, Thanks!

[@ireneuszpyrak961]

Something extremely beautiful about such classic musical instruments is the fact that we can touch, see and even smell the places where the sound is produced. We can see and touch places where magic happens ❤

[@nippocast]

Thanks for your kind words!

[@TheBellsandwhistles]

Another beautifully made video about a beautifully made organ. You do a great service to all of us in the industry showing the skill and care that we put into our work. Many thanks, TBAW.

[@nippocast]

Thank You!

[@dlwangxiaohu]

Every video in itself is a piece of art！

[@nippocast]

Thank You!

[@jwyatt631]

Thank you once again for presenting your fine workmanship. Very informative.

[@nippocast]

Thanks!

[@nippocast]

The construction continues! I told you I would make a video about manuals coupling, it is still in progress.

[@user-pr5jq7nv7y]

Very nice instrument😍

[@nippocast]

Thanks!

[@sirsynth225]

A big like for this episode Signore!!! One of the best I have seen so far: the technique, the massive progress in building - TOP! Maybe add a viewer warning message at the beginning: "No fingers were lost during this video" - wish you fast thumb recovery of course 😉

[@nippocast]

Thanks as usual Sir! in fact I thought that someone, seeing the bandage, thought I had lost a finger at the table saw 😂

[@sirsynth225]

@@nippocast that was my 1st guess I am afraid/ashamed to say. Be safe!

[@nippocast]

Even if sometimes it doesn't seem, I'm very careful

[@speaklifegardenhomesteadpe8783]

Amazing! 😮❤😊

[@nippocast]

Thanks!

[@Collegiumvocale]

Grazie Gianmaria e complimenti! Anch'io sono un appassionato di organaria e organista. Una domanda: i tubi carta-alluminio dove si recuperano? Ci sono di diverae dimensioni? Grazie

[@nippocast]

Ciao e grazie! I tubi li trovi dai fornitori per organari, in Italia c'è Daminato di Padova.

[@kacpervlog3532]

What are the tubes you used made of?

[@nippocast]

Kraft (paper)

[@jorgeandrade20]

I have a question, surprisingly I haven't been able to find a straight answer. When the pipe organ is on, the blower is blowing air into the wind chest. If no note is playing, you'd think that there would be an escape mechanism for the unused air to leave, but several people have told me there isn't. So, where does this air go? According to reason, eventually the system will max out and either the pump will burn out or the wind chest will explode.

[@TheBellsandwhistles]

A good question. Modern organs typically have a centrifugal blower (ie a fancy fan) to provide the wind. The pressure is usually tiny, about what you would use to blow bubbles through you drinking straw when you were a child. So, when the organ isn't using any air, the fan keeps pushing and maintains the pressure but the FLOW stops. Like when you block you vacuum cleaner hose, the motor whines a little more but no problems otherwise. Organ blowers are designed to handle this without noise or overheating so no problems ensue. In the old days the person pumping the organ had a little indicator to tell them when the bellows was full so they could slow down or stop. In the worst case there is usually a safety valve but it is a last resort because it makes a lot of noise. Hope this helps, TBAW.

[@nippocast]

There is a valve at the bellows inlet that progressively closes as the bellows fills, so when the bellows is full the valve is completely closed. For safety there is also a relief valve in case of overinflating. Thus you have a situation of static pressure that the windchest can easily hold, when a key is pressed a condition of dynamic pressure is created and the bellows lowers slightly, opening the inlet valve just enough to maintain the pressure. The more keys are pressed the more air is required and the further the inlet valve opens. the amount of pressure is determined by how much weight you put on the bellows

[@jorgeandrade20]

@@TheBellsandwhistles Thank you for the explanation, it makes perfect sense now. For some odd reason, I assumed pipe organs required massive amounts of air pressure so the blower would be comparable to a compressor, so the windchests would always be under enormous amounts of pressure, but since I asked this question I've watched quite a few videos of manually-operated bellows and I realized how little air is actually required in order to make pipe organs sing, I guess the massive sound that fills the cathedrals is more of a product of the environment than the pipes themselves, everything is finally clicking into place.

[@jorgeandrade20]

@@nippocast I see, I was wondering why there were weights on top of the bellows on some videos I watched, also, I understand now that the amount of pressure required to operate a pipe organ is far less than what I initially predicted. Thank you.

[@nippocast]

@@jorgeandrade20 exactly, the pipe organs works at a pressure of about 50mm in water column, i.e. 0.005 bar

[@Ififitzisitz]

Sorry to hear about your thumb!

[@nippocast]

Hi! Now it's much better