I have a 1974 delta queen I’m restoring. All good but the knocker is very quiet. It seems to be one where the power pulls the core back and then the spring returning it causes the knock. Much quieter than others where the power actually throws the fire to make the knock. Any way of making it louder? Is this a common prob with these? Thanks.
BBC9BF1C-242B-42D0-B254-736EBF758DED (resized).jpegMine are loud on my Bally machines. However, they will never be as loud as solid state machines. Check the contacts on the credit wheel for the knocker to make sure the contacts are clean and gapped properly. That way, your coil is getting as much power as possible.
I just can’t see this one being loud as having pulled the bolt down it’s just the spring return which pops to back against the stop to make the noise. It’s just seems be be working the wrong way compared to others I’ve seen. Many other Bally ones throw the bolt against the stop
For the noise. Is this one right?
Maybe someone else can verify this, but that knocker does not look like any of the Bally knockers of that time period. I believe the screw & nut is definitely a modification. Should just be a rubber grommet, or the whole assembly is incorrect all together. Looks like Williams knocker missing the grommet. The screw is definitely part of the problem, plus over time it is going to damage the plunger.
You have the correct knocker assembly.
Yellow coil wrappers are solid state coils. But I dont see a diode across the contacts, so it is properly used as an AC coil.
Again, check the contacts that supply the power to the coil. To get the snap action of the coil to create the knock, the contacts have to be clean, aligned and gapped properly.
Post a video if you need.
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Newcastle On Tyne
Olympia, WA