{"product_id":"o-s-18641-91hz-r-3c-speed-red-61f","title":"O.S 18641 .91HZ-R 3C Speed Red 61F","description":"\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003eO.S 18641 .91HZ-R 3C Speed Red 61F\u003c\/font\u003e\u003c\/p\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003eThis is the O.S. Engines 91 HZ-R 3C Speed Helicopter Engine in Red.\u003c\/font\u003e\u003c\/p\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e****** Because of the competition nature of this engine,******\u003c\/font\u003e\u003c\/p\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e******it is NOT covered by the O.S. 2 Year Warranty.******\u003c\/font\u003e\u003c\/p\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e\u003cimg border=\"0\" src=\"\/lib\/trendtimes\/arrowbullet.gif\"\u003e\u003c\/font\u003e\u003cfont color=\"#0000c6\" size=\"2\"\u003e Features\u003c\/font\u003e\u003c\/p\u003e\n\u003cul style=\"COLOR: rgb(226,226,226)\" type=\"square\"\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eO.S 18641 .91HZ-R 3C Speed Red 61F\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDesigned for all-out F3C competition\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDemand Regulator System ensures consistent fuel delivery from full to empty\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003e170� exhaust timing for optimal horsepower and stable hovering\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eNewly designed combustion chamber shaped to match the big bore carburetor and advanced exhaust cylinder timing\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003e0.44\" (11.2mm) Big Bore 61F carburetor for greatest power needed for F3C maneuvers\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eCrankshaft counter-weight reduces vibration at high RPM\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e\u003cimg border=\"0\" src=\"\/lib\/trendtimes\/arrowbullet.gif\"\u003e \u003c\/font\u003e\u003cfont color=\"#0000c6\" size=\"2\"\u003eSpecifications\u003c\/font\u003e\u003c\/p\u003e\n\u003cul style=\"COLOR: rgb(226,226,226)\" type=\"square\"\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDisplacement: 0.91cu in (14.9cc)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eBore: 1.09\" (27.7mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eStroke: 0.98\" (24.8mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eOutput: 3.6 hp @ 15500 RPM\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003ePractical RPM Range: 2,000-16,500\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eWeight (w\/o Muffler): 21.2oz (603g)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eCrankshaft Size: 5\/16-24\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eHeight from crankcase bottom to top of cylinder head: 4\" (103mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eHeight\/bottom of mounting tab to top of cylinder head: 3.1\" (79mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDistance between mounting hole centers same side: 0.98\" (25mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDistance\/mounting hole centers opposite side: 2\" (52mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDistance\/center of muffler screw holes: 1.6\" (42mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDistance\/bottom of mounting tab to muffler screw holes: 1.7\" (42.8mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eDistance\/crankshaft center to throttle control arm: 1.6\" (42mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eLength from front bearing to backplate: 3.3\" (84mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eLength from backplate to end of crankshaft: 4.5\" (116mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eWidth of crankcase below mounting tabs: 1.7\" (43mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eWidth between mounting tabs: 2.4\" (61mm)\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003e  Carburetor Settings-\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eHigh Speed Needle: Two turns open from fully closed\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eMedium Speed Needle: One turn open from fully closed\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eIdle Mixture Control: At basic position when engine leaves factory\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e\u003cimg border=\"0\" src=\"\/lib\/trendtimes\/arrowbullet.gif\"\u003e \u003c\/font\u003e\u003cfont color=\"#0000c6\" size=\"2\"\u003eContents\u003c\/font\u003e\u003c\/p\u003e\n\u003cul style=\"COLOR: rgb(226,226,226)\" type=\"square\"\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003e91 HZ-R 3C Speed Helicopter Engine with #8 Glow Plug, Aluminum Check Valve, 0.008\" (0.2mm) Head Gasket,, Aluminum Control Arm, two Needle Adjusting screws and Instruction Manual\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003e\u003cimg border=\"0\" src=\"\/lib\/trendtimes\/arrowbullet.gif\"\u003e \u003c\/font\u003e\u003cfont color=\"#0000c6\" size=\"2\"\u003eRequirements\u003c\/font\u003e\u003c\/p\u003e\n\u003cul style=\"COLOR: rgb(226,226,226)\" type=\"square\"\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eFuel: 10%-30% nitromethane with at least 18% lubricant. Lubricants may be either castor or synthetic oil or castor\/synthetic blend.\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eField Equipment: glow starter, fuel bulb, fuel can filter, fuel pump hexagonal starting shaft (depending on brand of helicopter) electric starter, battery and fuel tubing\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt\" align=\"left\"\u003e\u003cfont color=\"#000000\" size=\"1\"\u003eMuffler-Depending on heli\u003c\/font\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trend Times Toys \u0026 Hobbies","offers":[{"title":"Default Title","offer_id":43579635400761,"sku":"18647","price":641.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/o-s-18641-91hz-r-3c-speed-red-61f-33.jpg?v=1720892616","url":"https:\/\/www.trendtimes.com\/products\/o-s-18641-91hz-r-3c-speed-red-61f","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}