What is the best way to add sound when I am rubbing the engine
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I would rub it with something that will make a lot of noise against aluminum. I think for a deep sound you will want to go with a large hollow pipe. The thickness of the pipe wall will change the sound some, so you will want to experiment. You may have to tap more than rub for a deep tone. A deeper tone tuning fork may work if you can find one.
Last edited by alej; 11-15-2012 at 09:19 AM.
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