IWC Big Pilot's Watch 43 TPD & Winder Settings | Aevitas

Owners of the IWC Big Pilot's Watch 43 (IW329304, Calibre 82100) often ask us which winder programme this movement actually needs. The answer is 800 turns per day on a bidirectional cycle — the figures are set out below.

Recommended Winder Settings

Setting Value
Turns per day (TPD) 800
Winding direction bidirectional
Movement Calibre 82100
Recommended Winder
2 Watch Winder in Black Leather - Aevitas Luxury Watch Care

2 Watch Winder in Black Leather - Aevitas Luxury Watch Care

£413.00
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Why These Settings Matter

Winder settings are about balance. At 800 turns a day, the Big Pilot's Watch 43 replaces roughly the energy it uses, keeping amplitude and accuracy where the manufacturer intended. Too few turns and it will eventually stop mid-week; that is the only real risk of an incorrect setting.

Damage from overwinding is not something owners of modern automatics need to fear. The mainspring is fitted with a slipping bridle that slides against the barrel wall at full wind, capping the tension the movement can receive. An over-generous TPD is wasteful, never harmful.

Every Aevitas winder can be programmed from 650 to 1,850 TPD in either direction, so matching the 800 TPD this watch needs takes seconds.

For Larger Collections

← Back to the complete TPD settings database

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