I have a dumb simple question. What effect does positioning the crutch loop farther up or down on the pendulum rod have on the way a clock runs (assuming there is plenty of excess wire length to work with)? I have an old Ingraham mantle clock with a crutch that doesn't look original. Experimenting with this short clock, I don't notice any difference when adjusting the loop up or down, but I'm wondering if the effects would be more critical on a clock with a long pendulum.
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