TIM Lever 7 Jewels Shock Protected Stopwatch. Part 4

TIM Lever 7 Jewels Shock Protected Stopwatch. Part 4

Today was the assembly of The BFG Calibre 410 movement part 2 in the workshop.

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Oiling and greasing as I go, I start by replacing mainspring in barrel, Arbor and barrel cap. Then start on the train wheels, first replace the centre (Seconds) wheel and pinion followed by the complete barrel, then the third wheel and pinion, Minute recording wheel and pinion. It’s time to replace the Barrel Bridge.

Now time to refit the Escape wheel and pinion and then the Train Bridge. On to the click and spring, Ratchet wheel, Crown wheel with left-hand thread screw, test the train by winding the stem and putting power into the Mainspring, runs nice and freely.

Replace the Pallet Fork and Pallet Cock, then fit the complete Balance and the movement springs into life. Remove top Anti-Shock Jewel and clean and replace. Place movement on the timing machine and the readings are fine, will regulate it later.

Turn over the mainplate and replace the following items, operating lever spring, fly-back lever spring, hammer, whip, whip spring, blocking lever and finally the dial rest plate. Test the Start, Stop

And fly-back actions and all the motions are working well.

That’s it for this session, as I have to manufacture the complete fly-back pusher, and still waiting for the Breitling a replacement that I hope will fit movement!