I have bad news. The reason for the bad bass sounds and losing air on some notes is because some wax has disappeared and the reed block is cracked.
Im guessing these are exactly the reeds that bother me. The bottom of the reeds have gaps. I have shined a light over it and I can see the air hole beneath it.
<ATTACHMENT filename=Missing wax.jpg index=2>
To the left you can see the block is cracked. When I press down on the reed block it moves a tiny bit down.
<ATTACHMENT filename=Cracked reed block.jpg index=1>
Is this fatal?
The treble sound is wonderful, besides for some valves and spines that need to be replaced. So it would be quite a pity if that bass reed block meant this accordions death.
<HR>
</HR>
Furthermore, can somebody help me figure out how to get the reed blocks out? I have pulled the metal rod thing at the top of the treble reed blocks and then I can slide the reed block out. However, this is the old kind of block where the register slide is inside the block.
From
http://accordionrevival.com/ACCORDION_REPAIR1.php :
If you are removing reed blocks, be very careful not to bend the register slides. In many older accordions, the slides are mounted in the reed block rather than in the foundation plate. If this is the case, lifting the reed block without first disengaging the slide from the switch mechanism can cause the slide to kink, rendering it useless. Once bent, they are very difficult to straighten well enough to work properly.
Does
disengaging the slide from the switch mechanism here mean I should select a register that disables the reed block I want to remove, or does this mean I must somehow physically disconnect the rods from the slide inside the block?
I tried to remove one of the reed blocks and it looked like the register slide was going to slide out of the reed block if I remove it, so I put it back gently.
On the base side I am totally lost. The way the screws are on that little holding plate to the left inside the bass makes me believe that the bellows should be removed before working on the bass reed blocks. Or alternatively, that the entire bass structure must first be removed.
<HR>
</HR>
I have no idea how to remove the bellows from the bass side.
I think I read on accordionrevival.com something like you need to do something form the bass rod side to remove the bellows, but I really cannot see anything.
These are the corners inside from the bass rod side.
<ATTACHMENT filename=Bass side screws.jpg index=0>
<HR>
</HR>
Regarding previous comments:
Yes, the bellows gasket is fabric.
I have removed the pickup. I just cut the wired under the socket. I dont really care about pickups at this time, so its no big deal.
The bass balance problem will then be because of the bad notes.
I really hope I can get that bass problem fixed. Now that I think about it, this is the second cassotto accordion I have seen available locally in years. The other one is a Weltmeister Consona. I think the preferred sound locally is the sharper kind. Those with cassotto accordions will be top level professionals - and there are very few of them. And besides, they have more modern instruments and they are not selling.
I have not yet had a chance to contact a repairman and I would like get the reed blocks out for photos first.
I am actually a little scared to just try pulling on things because this somewhat more complex than my other accordion.
If I need to take any close-up pictures to help, let me know.