FHF 82

Description

A rather late movement is the FHF 82, a 10 1/2 ligne windup movement with decentral seconds indication at 6 o’clock. When the movement was launched around 1970, this kind of indication was already outdated for decades.

It’s noteable, how crude the execution is, and that there’s no decoration at all. Most probably this was due to the economic fight against upcoming quartz watches and cheaper watches from far east.

Technically, there’s nothing to say against this movement. It has got 17 jewels and even the minute wheel is ruby-beared on both sides.

The FHF 82 uses the classical gear train with mainspring barrel, directly driven minute wheel, third wheel, decentral seconds wheel at 6 o’clock and a nice, filigree escape wheel.

As escapement it uses a swiss pallet lever, of course.

The three-leg, electronically balanced anular balance shows the design, which is still used today. It is of course shock-protected (Incabloc) and beats already semi-fast with 21600 A/h, which can be adjusted at the hairspring key only.

As common on later FHF movements, the opening of the hairspring key can be adjusted with tiny lever. The smallet it is, the more precise can the adjustment of the effective hairspring length happen. The timegrapher output shows that impressingly.

The quite crude executed dial side is slanted on its outer edges to save a little height.

At position 9 o’clock, you can see the Incabloc shock protection and on the opposite side the yoke winding systems with its rather fragile setting lever spring.

In the lab

Timegrapher result

Rarely was there a "simple" windup movement, which showed such fantastic results on the timegrapher after more than fifty years. It is in all positions within the chronometer specs, and the amplitudes and beat errors are simply perfect!

Technical data

Usage gallery