The bells are very simple in concept just long thin-wall tubes, cut to special lengths for tuning, plugged at one end with some sort of hanger attached.&nbsp In some cases the plugs provide the base for the hanger. In most cases, the plug serves to provide substance where the plunger strikes, which somehow contributes to volume and resonance.&nbsp It is very important that the bell hanger loop is the correct length so that the plunger strikes the bell directly in the plugged region.
The tubular bells can have a couple of problems. Most significantly, cracks at the ends.&nbsp Many older bells have a crack of about 2&rdquo long at the plug end.&nbsp I&rsquove seen so many like this that I conclude that it is a fairly normal state, as opposed to the result of abuse.&nbsp I suspect that the force of the metal or plastic plug pressed into the top end is the cause.&nbsp The cracks are visible only upon close inspection, so are of little cosmetic consequence unfortunately they can cause tonal problems. In the worst cases they can cause the bell tone to have a buzzing character and perhaps slightly affect volume. &nbspThe crack may have less effect on tone if the bell is placed so that the crack is away from where the plunger strikes. &nbspTheoretically I suppose the crack could be brazed and reshaped, but that seems dicey not to mention difficult.&nbsp My sense is that cracked bells stay cracked. So let us take a look at favorite door bells with chimes with 37 pictures below.
1. Craftsman Door Doorbell Chime Rejuvenation Doorbell Chimes Home Depot Wired Doorbell Chimes
One really nasty problem is finding a chime with bells that have been cut for reasons unknown. I saw one on eBay recently where the lengths were visibly not right.&nbsp Hard to say what bad history had transpired.&nbsp Maybe someone tried to &ldquofix&rdquo a cracked bell by cutting off the cracked part.&nbsp Maybe a bell or two had been dropped and bent, so the bent part was cut off. In any case, it is possible to retune the bells by adjusting the length.