How do you slow down an engine fan using old automotive engine fan as part of movie set. hooked it up to 9v battery and it works but it spins too fast. need it to spin really slow?
How do you slow down an engine fan using old automotive engine fan as part of movie set. hooked it up to 9v battery and it works but it spins too fast. need it to spin really slow? try wiring it with a dimmer switch
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