Most of the moment clocks are simply not that large. Hands as well as pendulums are short as well as lightweight sufficient to get a lot of torque from the smaller AA cell. However, even in this instance you could intend to go with a C battery if the clock is fairly hard to reach as well as you wish to minimize battery adjustments.
Building grandpa clocks, mantle clocks, or other wrist watches including pendulums can be quite satisfying. And also unless you are supersizing your items we suggest using tiny AA battery pendulum clock movements.