A quick visit to Stocco's shop in Stradella

[Ric46]

Here is a smaller 72 bass 3 treble reed instrument. So it looks like it’s possible.

NEW Blue Weltmeister Romance 603 Chromatic Button Accordion B LMM 60 72

Type: Chromatic Button Accordion Reeds: 3/4 LMM Treble: 60(36) Buttons 9(23cm) Button to Button 5 Registers Bass: 72 Bass Buttons 0 Registers Weight: 18lbs / 8kg Features: Compact size 5 Row

www.libertybellows.com

Thank you. And what about the air question? More reeds playing together needed more air, right?

 

[NickC]

I don't really know. How many sets of bass reeds are in the new instrument versus the other one?

I remember reading about bellows size and how much air is needed, but that isn't something that I fully understand. It was something involving the amount (and velocity?) of air being pushed through an organetto versus a 41/120 piano accordion. Maybe the difference that you are feeling is related to larger bellows? That would be an interesting thread to read.

 

[Ffingers]

I don't really know. How many sets of bass reeds are in the new instrument versus the other one?

I remember reading about bellows size and how much air is needed, but that isn't something that I fully understand. It was something involving the amount (and velocity?) of air being pushed through an organetto versus a 41/120 piano accordion. Maybe the difference that you are feeling is related to larger bellows? That would be an interesting thread to read.

Look at it this way, Nick, the greater the volume of air inside the bellows, smaller movements of them push more air out of them and given that the sounding of the reed needs a certain amount of air to pass through regardless of the size of the accordion, just a smaller push or pull on bigger bellow will provide that amount. The pressure required will be the same, the weight of the bellows and bass end can be used, if needed, to assist in providing that force.
In my very recent acquaintance with the accordion, and acquisition of a very hefty box, I find it easier to control the air on that big one than on the smaller box.
I have very carefully read all the advice by as many competent teachers as I have been able to access and watched attentively very many videos by the best players on the 'tubes' to learn how to make the best of that simple physics.

 

[Ric46]

Look at it this way, Nick, the greater the volume of air inside the bellows, smaller movements of them push more air out of them and given that the sounding of the reed needs a certain amount of air to pass through regardless of the size of the accordion, just a smaller push or pull on bigger bellow will provide that amount. The pressure required will be the same, the weight of the bellows and bass end can be used, if needed, to assist in providing that force.
In my very recent acquaintance with the accordion, and acquisition of a very hefty box, I find it easier to control the air on that big one than on the smaller box.
I have very carefully read all the advice by as many competent teachers as I have been able to access and watched attentively very many videos by the best players on the 'tubes' to learn how to make the best of that simple physics.

Thank you. It seems to me that some registers needed more air than others. Is it right?

 

[Ffingers]

Thank you. It seems to me that some registers needed more air than others. Is it right?

The more reeds opened by a register, the more airflow needed.
Those big low bassoon reeds are the ones which need the most air to stir them into action.

 

[Dingo40]

Large accordions not only have bellows with a large cross section but also with very deep bellows pleats, resulting in a huge air pumping capacity .