Mainspring Help

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turned_in_notMainspring Help

The Loop-End clock mainspring description is a long flat spring with a loop on one end. This loop gets wrapped around the outer plate pillar of the movement. In other words, this is the type of mainspring that can be seen. It is not contained in a barrel. Likewise, if the spring is in a barrel, the mainspring can’t be… View Product

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turned_in_notMainspring Help

When a mainspring breaks within a clock movement, it could cause damage. The damage could be within the movement itself or to the clock case. It is uncommon but sometimes even the sides of the wood case get damaged when a mainspring breaks. As for the movement itself, we need to check the gear teeth and the gear arbors. The… View Product

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turned_in_notMainspring Help

Barrel Number Mainspring Dimensions MM 10 17 x .45 x 1490 11 17 x .42 x 1500 20 & 56 17 x .38 x 1200 21 & 50 17 x .40 x 1200 31 12 x .34 x 1150 32 12 x .42 x 1100 33 12 x .32 x 1150 40 17 x .38 x 1100 41 21 x… View Product