by Dave Booth » Fri Mar 25, 2016 9:59 pm
On this same subject, perhaps a little discussion of French regulator parts is in order. Here is one from a Marti, labeled Pigeon, in which I made a new suspensions spring. The French suspension springs sold by the various supply houses are okay for many applications, but occasionally, you will hit one as I did with this Marti, where the springs are too long, or too wide, or the blocks are not the proper size to fit in the regulator mechanism you happen to have before you. This is going to take several posts, because I can only load one photo into each. Tis first photo shows the clock laid out on the bench, with the barrels and a few wheels set on one plate, preparatory to checking end shake and depthing. The regulator mechanism assembly is in the upper right corner, between my screwdrivers and oil stand, just above the pendulum rod and hook. The assembly also comprises the cock for the rear pivot of the anchor. The regulator mechanism is mounted on the inside of the cock, with a single screw and an alignment pin. In order to access the regulator, the cock is unscrewed from the back plate, and the screw holding the regulator is accessible from the reverse (or front) side. This screw is the same thread as the screw holding the cock onto the rear plate, but is slightly shorter, because it is "blind"; one must take care not to mix the two screws up.
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