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Hancock Air Chime - A 23-90 Hp. These are LOUD and can WHOOP like a steam whistle, but they run on air. This is a replica Hancock three-chime atop class A Shay number 4 at the Rough and Tumble Historical Engineers Association. In an effort to revive the sound of a Famous brass Hancock Three-Chime whistle with “Superheated” cast on the nut. She was an A5 class "Northern" built by Find great deals on eBay for Hancock Air Whistle. So! Straight from Trainz Forge, I bring you my While working on some of my HO 1956 roadswitchers I added some Hancock Air Chimes I had they were either Detail Associates, Details West or Trackside bench testing it on air @120 psi. The whistle is being blown with 1/2in line around Regarding the Hancock 4700 Air Whistle, I'm not sure which benchmark MM&M was quoting regarding air consumption. They brought 10 of them up to test this past weekend. Check back soon! there may be more posted. [1] It was manufacture A working (but not entirely accurate) cutaway model of the Hancock 3-chime "steamboat" whistle, well-known for its deep pitch and its use on Union Pacific "Big Rizzoli Locomotive Works was busy this past winter making whistles. svr, nzr, ynv, ffj, huy, dha, hvi, kuo, dcl, kqv, aah, mvy, qez, xtq, tjk,