Bell 11 / 31Carillon2023
Great Edith
DWG 23-427Drawn from the working profile. Not to print scale.
01Bell details
The bourdon of the Norwell carillon: 4.6 tonnes, and the largest bell we have poured. Nine days in the pit before the cope came off.
- Commission
- Bourdon of a 49-bell carillon
- Place
- Carillon of the Library, Norwell
- Inscription
- KNOWLEDGE IS A BELL · 2023
- Metal
- Bell metal, 78% copper, 22% tin
- Mould
- Loam, swept by strickle
- Tuning
- True-harmonic, five partials
02Tuning record419.4 Hz nominal
| Partial | Ratio | Measured | Off | Deviation |
|---|---|---|---|---|
| Hum | ·25 | 105.2 Hz | +5¢ | |
| Prime | ·5 | 210.3 Hz | +5¢ | |
| Tierce | ·6 | 250.8 Hz | -6¢ | |
| Quint | ·75 | 314.2 Hz | -2¢ | |
| Nominal | 1 | 419.4 Hz | 0¢ |
Ratios to the nominal. Cents are hundredths of a semitone; within ±6¢ most ears hear the bell as in tune.
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Tobias
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