{"product_id":"wwii-b-29-aircraft-pu-7-ap-motor-generator-wincharger-zenith-u-s-army-signal-corps","title":"WWII B-29 Aircraft PU-7\/AP Motor Generator – Wincharger \/ Zenith – U.S. Army Signal Corps","description":"\u003cp\u003e\u003cspan\u003eWWII B-29 Aircraft PU-7\/AP Motor Generator – Wincharger \/ Zenith – U.S. Army Signal Corps\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOriginal WWII-era PU-7\/AP motor generator manufactured by Wincharger Corporation, a division of Zenith Radio Corporation. The U.S. Army Signal Corps identification plate bears serial number 2993 and order number 627-DAY-44.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA particularly interesting feature is the modification label inside the cover specifying use on B-29 airplanes only and noting replacement of the 30-amp AC fuse with a bus. This documents a B-29-specific modification; its individual aircraft service history is unknown.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned to convert 28-volt DC power into 115-volt, 400-cycle AC power. The generator plate lists an output of 21.6 amps and operating speed of 8,000 RPM. PU-7\/AP units also appear in wartime documentation for AN\/APQ-7 aircraft radar installations. (\u003ca href=\"https:\/\/www.315bw.org\/apq7rpt5.htm?utm_source=chatgpt.com\"\u003e315bw.org\u003c\/a\u003e⁠)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncludes the motor-generator assembly, attached control enclosure, mounting feet, electrical connectors, and removable cover with its schematic diagram and component list. Retains black wrinkle finish, orange warning stencils, and military inspection markings.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eShows scratches, finish loss, dust, surface oxidation, corrosion around some fuse clips, and aging of wiring insulation. Internal components are visible in the photographs, but completeness and operation have not been verified. Sold untested for collection, display, parts, or restoration. No external cables included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn impressive piece of WWII bomber electrical equipment with a clearly marked B-29 connection.\u003c\/span\u003e\u003c\/p\u003e","brand":"Whiskey Rebellion Antiques","offers":[{"title":"Default Title","offer_id":67560023654477,"sku":null,"price":375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/9229\/8829\/files\/B5422172-5F72-4DDB-92BB-4B0E7BE65B1F.jpg?v=1790800823","url":"https:\/\/whiskeyrebellionantiques.com\/products\/wwii-b-29-aircraft-pu-7-ap-motor-generator-wincharger-zenith-u-s-army-signal-corps","provider":"Whiskey Rebellion Antiques","version":"1.0","type":"link"}