{"product_id":"o-s-18650-91hz-ring-61e","title":"O.S 18650 .91HZ Ring 61E","description":"\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003eO.S 18650 .91HZ Ring 61E\u003c\/font\u003e\u003c\/p\u003e\n\u003cp align=\"left\"\u003e\u003cfont size=\"1\"\u003eThis is the O.S. .91HZ F3C Competition Helicopter Engine.\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 18650 .91HZ Ring 61E\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 specifically for F3C aerobatic 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\"\u003eRectangular heat sink allows engine to be enclosed entirely inside cooling shroud\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\"\u003e61-E carburetor with thermal insulator to block heat and a needle valve control lever to control mixture from transmitter, carburetor has three adjustment controls that enable independent adjustment at idling, hovering and high speed\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\"\u003eFive holes in the top of the piston route gases to the piston ring from within to form a tighter seal with minimum blow by\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\"\u003eBall bearing supported crankshaft\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\"\u003eHeat sink type backplate\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\"\u003eTwo year limited warranty through Hobby Services beginning at date of purchase\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: 0.91 cu in (14.95 cc)\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: 3.4 hp @ 15,000 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: 2000-16,000\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 Without Muffler: 1.36lb (618g)\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: 3.9\" (99mm)\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: 3.2\" (81.2mm)\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 holes 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 between mounting holes opposite side: 2.04\" (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 between 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\"\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: 4.9\" (125.6mm)\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\"\u003eCarburetor Needle 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\"\u003e  High Speed: 2 turns out 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\"\u003e  Mid Range: 2 turns open\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  Mixture Control (low speed): indentation on screw head straight up and down (vertical)\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\"\u003eO.S. .91 HZ F3C Competition Helicopter Engine with #8 glow plug, needle control lever, extra 0.2mm head gasket, cap 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":43579635728441,"sku":"18650","price":539.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/o-s-18650-91hz-ring-61e-33.jpg?v=1720892624","url":"https:\/\/www.trendtimes.com\/products\/o-s-18650-91hz-ring-61e","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}