{"product_id":"ma-137-111-sukara-hpc2-rotor-head-12mm","title":"MA 137-111 Sukara HPC2 Rotor Head - 12mm","description":"\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e137-111 \u003cspan style=\"font-family: Arial;\"\u003eSUKARA \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eH\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eigh \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eP\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003erecise \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eC\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eyclic \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eC\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eontrol \u003c\/span\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003eHPC\u003c\/b\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003csup\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003e2\u003c\/b\u003e\u003c\/span\u003e\u003c\/sup\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eRotor Head\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e- Set -\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e1 x 137-111\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe new Miniature Aircraft ® \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eSUKARA \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eH\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eigh \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eP\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003erecise \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eC\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eyclic \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eC\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eontrol \u003c\/span\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003eHPC\u003c\/b\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003csup\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003e2\u003c\/b\u003e\u003c\/span\u003e\u003c\/sup\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eRotor Head\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003ewas developed for maximum control precision.\u003cbr\u003e\u003cbr\u003eThis technical background motivated us to develop this rotor head:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eHigh forces are exerted on a rotor head during flight. In particular, the forces acting on the thrust bearings due to the centrifugal force of the rotor blades cause high actuating forces on the control rods of the blade holders. These actuating forces occur in particular during cyclic control inputs (e.g. when flying a loop), as the blade holders have to adjust to the positive cyclic angle of attack and the negative cyclic angle of attack with each revolution of the rotor. Each time the rotary movement is reversed, the thrust bearings come to a brief standstill. As a result, the breakaway torque of the thrust bearings must be overcome for the restart. With very small control commands (very small stick movements), the thrust bearings may not start up and the control input is therefore lost. As the \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003espindle\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e shaft cannot rotate in flight in conventional rotor head designs, the thrust bearings must perform this rotary movement.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe new HPC\u003csup\u003e\u003cb\u003e2\u003c\/b\u003e\u003c\/sup\u003e rotor head solves this problem. The dampers for the spindle shaft are rotatably mounted in the center piece. This means that the spindle shaft and damper can also perform a rotary movement under load in flight. With cyclical control inputs, the axial bearings no longer have to perform the rotational movement described above. This considerably reduces the actuating forces required for the blade holders and thus increases the resolution of the rotor system for cyclic control commands.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eThe HPC\u003csup\u003e\u003cb\u003e2\u003c\/b\u003e\u003c\/sup\u003e rotor head has a total of 10 radial bearings and 2 axial bearings. The dampers are designed as plastic bushes with an O-ring. The setup allows a wide head speed range. Other special features of the rotor head include specially shaped blade holders that prevent the rotor blades' bore sleeves from being pressed through or out and it supports the new swashplate with the Direct Swash Drive (DSD) System.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e\u003cu\u003eTechnical details:\u003c\/u\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eMade from high-quality aerospace aluminum\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eP\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eivoting \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003espindle\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e shaft\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003e10mm hollow spindle shaft\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eF\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eor 12mm main rotor shafts\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eFastening to the main shaft by means of 4 screws\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"color: rgb(0, 0, 0);\"\u003e\n\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"font-family: Arial, sans-serif;\"\u003eSupport for the new DSD system swashplate\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0); text-decoration: underline;\"\u003e\u003cstrong\u003eUsed for:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFits Sukara Family and Whiplash Family (with conversion kit)\u003c\/span\u003e\u003c\/p\u003e","brand":"Miniature Aircraft","offers":[{"title":"Default Title","offer_id":42310545047612,"sku":"MA137-111","price":499.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/7333\/4844\/files\/Sukarahead-1.jpg?v=1730699021","url":"https:\/\/helidirect-demo-mode.myshopify.com\/products\/ma-137-111-sukara-hpc2-rotor-head-12mm","provider":"HeliDirect Demo Mode","version":"1.0","type":"link"}