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Giant Air Horn Made From PA Speakers
Dave Dam has been turning old artillery shells of various sizes into steam whistles for years. The Eau Claire, Wis., whistle expert recently put together 5 giant air horns of different sizes, all hooked up together on a pipe frame.
  “It looks impressive and is twice as big as a 5-chime train horn,” says Dam. “I use a large propane tank for an air tank in my pickup and usually keep the pressure at 125 psi.”  
  All 5 air horns are made out of 3-in. dia. pvc pipe for the body and have 8-in. diaphragms made from in-floor house drains. The horn bodies measure 6, 9, 12, 18, and 24 in. long. The biggest horn has a 12-in. dia. public address speaker forming the flared end of the horn, while the smallest has an 8-in. dia. speaker. Dam made T-shaped brackets for each air horn and screwed them to a frame made from 3/4-in. dia. pipe.
  The entire setup mounts on a single pipe stand. “One pipe slides over another pipe so I can rotate it in any direction,” says Dam.
  Contact: FARM SHOW Followup, Dave Dam, 111 N. Buena Vista Rd., Eau Claire, Wis. 54703 (ph 715 450-2943; ddamwhistler@gmail.com)

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2015 - Volume #39, Issue #5