Continue Robin remontoire - June 2009

This month B. continues to fabricate the Robin remontoire. The first photo shows the entire length of the chain, next a close up of the remontoire drive weight. Notice the curvilinear design carried through to the pulley frame as well as the intricate pulley wheel designed to match the unusual chain design. Third photo shows the two remontoire weights with pulleys, the safety clutch and drive wheel.

The test bed Plexiglas plates are now made. B. has fabricated the upper fork that will sense an over-wind condition

Two additional wheels are now fabricated and two wheels that were already inserted into the main movement are now moved to the test bed to begin the building up of the Robin system. The photos show the sub system to date from the front, rear and top.

Below begins fabrication of the fly fan drive. Notice that B. uses the better and more difficult to make, bevel pinion and slanted tooth bevel wheel design. This configuration allows for a greater area of tooth contact resulting in a smoother operation. this is particularly important in this area where the wheels will be be moving rapidly whenever the fly fan is tripped.

Below are four photos showing the further development of the fly fan drive assembly. The last two photos show the ratchet wheel with dual pawls, each adjusted to 1/2 tooth so as to give double the clicking sound when activated. This is repeated on all fly assemblies.