====== IWC 76240 ======
The **76240** is an [[hand-winding]] [[rattrapante]] [[chronograph]] movement produced by [[IWC]] based on the [[Valjoux 7750]] from [[1995]] through [[2004]].

===== Details =====
The [[Valjoux 7750]] movement was extremely important to the resurgence of [[IWC]] and the basic design remains in use today. The company has used it for many important innovations since the 1980's, including a [[perpetual calendar]], [[rattrapante]], and [[grande complication]]. The 7750 [[ebauche]] was used for the [[IWC 7900|790 family of movements]] and the basic architecture is the basis for today's [[IWC 69000|69000 family of movements]]. In [[1991]], IWC released an innovative [[rattrapante]] chronograph, [[IWC 79030|Cal. 79030]], designed by [[Richard Habring]].

In [[1995]], IWC created a novel variant of the 7750 base. **Cal. 76240** dispenses with the calendar and most of the [[chronograph]] functions of the 7750, leaving only the 30 minute recorder at 12 00 and adding [[small seconds]] at 6 00 instead of the usual placement at 9 00. This modification was anything but simple, however. Relocating the running seconds required cutting away part of the movement base plate and adding an all-new bridge with three [[wheel]]s and a tension spring. Removing the calendar plate required the creation of a new plate to cover the [[gear train]]. Next, Habring's [[rattrapante]] design was added. A final modification was the removal of the automatic winding mechanism in favor of a simple [[hand-winding]] works.

This movement powered the [[IWC Portugieser Chrono-Rattrapante 3712|Portugieser Chrono-Rattrapante, Ref. 3712]]. It was produced from [[1995]] through [[2004]].

===== Applications =====
  * [[IWC Portugieser Chrono-Rattrapante 3712]] (1995-2004)


<WRAP ud ud_mov>

**Description:**
  * [[Hand-winding]] [[chronograph]] [[rattrapante]] movement based on [[Valjoux 7750]]

**Functions:**
  * Hours, minutes
  * [[Rattrapante]] [[chronograph seconds]] operated by pusher at 10 00
  * [[Small seconds]] at 6 00
  * [[Chronograph minutes]] at 12 00

**Data:**
  * Ø 30 mm
  * 31 [[jewels]]
  * 21,600 A/h
  * [[Power reserve]] 44 hours

**Production period:**
  * [[1995]]-[[2004]]
</WRAP>

{{tag>Movements Valjoux_7750 Chronograph_movements Rattrapante_chronograph_movements IWC_calibres}}