{"product_id":"control-horn-70mmx4mm-adj-w-3mm-ball-link-and-threaded-rod","title":"Gator RC 70mm Adjustable Control Horn w\/ Rod – Aluminum RC Linkage","description":"\u003cp\u003e\u003cstrong\u003eGator RC 70mm Adjustable Control Horn w\/ Rod\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003eGator RC 70mm adjustable control horn system\u003c\/strong\u003e is a complete linkage solution designed for medium to large RC airplanes. Featuring a \u003cstrong\u003esteel M4 threaded rod\u003c\/strong\u003e, \u003cstrong\u003ebrass linkage components\u003c\/strong\u003e, and \u003cstrong\u003eadjustable mounting washers\u003c\/strong\u003e, this system provides a strong, precise, and adaptable connection between your control surface and servo linkage.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eA complete, adjustable control horn system for 35–100cc RC aircraft — featuring a steel 4mm threaded rod (70mm), a brass 3mm pushrod with wire pass-through, adjustable taper washers for gap-free surface contact, and a 3mm ball link for smooth, precise servo-to-control-surface connection. At 13 grams, this is the full linkage solution in one pack.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e70mm steel threaded rod (M4)\u003c\/strong\u003e — 2.75-inch rod included, ready to install with no additional hardware needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable taper washers\u003c\/strong\u003e — conform to the angle of your control surface for a flush, gap-free mount on angled or beveled surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass 3mm pushrod (M3 × 32mm) with wire pass-through hole\u003c\/strong\u003e — accepts wire for additional linkage routing or retention\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3mm brass ball link\u003c\/strong\u003e — fits standard 3mm threaded pushrod ends for smooth, low-friction pivot at the servo connection point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM4 × M3 adapter piece (12mm center-to-center)\u003c\/strong\u003e — bridges the rod to the ball link with a 3mm screw and nut included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed anodized aluminum components\u003c\/strong\u003e — lightweight, corrosion-resistant, and visually distinctive on your build\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete one set per pack\u003c\/strong\u003e — everything needed for one control surface linkage run\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded rod:\u003c\/strong\u003e M4 × 70mm steel (2.75 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass pushrod:\u003c\/strong\u003e M3 × 32mm with wire pass-through hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall link thread size:\u003c\/strong\u003e 3mm (fits standard 3mm pushrod ends)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter piece:\u003c\/strong\u003e 4mm × 3mm, 12mm center-to-center\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall link hole:\u003c\/strong\u003e 3mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening hole:\u003c\/strong\u003e 3.5mm, length 23mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed loop extender:\u003c\/strong\u003e M3 × 32mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorn base bolt-through ball hole:\u003c\/strong\u003e 3mm, length 27mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorn material:\u003c\/strong\u003e Red anodized aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal system weight:\u003c\/strong\u003e 13 grams (0.46 oz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended aircraft size:\u003c\/strong\u003e 35cc to 100cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e GRC-CH-225\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold as:\u003c\/strong\u003e 1 × complete control horn set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × M4 × 70mm steel threaded rod (2.75 inches)\u003c\/li\u003e\n\u003cli\u003e1 × M3 × 32mm brass pushrod with wire pass-through hole\u003c\/li\u003e\n\u003cli\u003e1 × 3mm brass ball link\u003c\/li\u003e\n\u003cli\u003e1 × M4-to-M3 adapter piece (12mm center-to-center)\u003c\/li\u003e\n\u003cli\u003e1 × M3 screw and nut (for ball link attachment)\u003c\/li\u003e\n\u003cli\u003eAdjustable taper washers for gap-free surface mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRequired to Complete\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eServo with compatible output arm geometry for your aircraft size\u003c\/li\u003e\n\u003cli\u003ePushrod or Z-bend wire if extending beyond the included rod length\u003c\/li\u003e\n\u003cli\u003eMounting screws appropriate for your control surface material\u003c\/li\u003e\n\u003cli\u003eBackplate or reinforcement (recommended for foam or balsa surfaces)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eBest For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGas and glow-powered RC aircraft in the 35cc to 100cc engine size range\u003c\/li\u003e\n\u003cli\u003eBuilders who want a classy, complete linkage solution without sourcing individual components\u003c\/li\u003e\n\u003cli\u003eElevator, rudder, and aileron control surface connections requiring a ball link pivot\u003c\/li\u003e\n\u003cli\u003eAircraft with angled or tapered control surfaces where standard flat washers leave gaps\u003c\/li\u003e\n\u003cli\u003eSport, aerobatic, and large-scale builds where a polished, finished appearance matters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse the adjustable taper washers to match the bevel of your control surface before final tightening — this eliminates slop and rocking at the horn base\u003c\/li\u003e\n\u003cli\u003eAlign the horn pivot point directly over the control surface hinge line for accurate throw geometry\u003c\/li\u003e\n\u003cli\u003eThe brass ball link accepts standard 3mm threaded pushrod ends — verify your servo pushrod hardware is 3mm threaded before ordering\u003c\/li\u003e\n\u003cli\u003eThe wire pass-through hole in the brass rod can be used for a safety wire or to route a secondary return linkage\u003c\/li\u003e\n\u003cli\u003eApply thread-lock sparingly to the M3 screw securing the ball link adapter to prevent vibration loosening in flight\u003c\/li\u003e\n\u003cli\u003eConfirm full deflection in both directions is smooth and unrestricted before flight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy Choose an Adjustable Taper-Washer Control Horn?\u003c\/h3\u003e\n\u003cp\u003eMost standard control horns mount flat against the control surface — which works fine on flat surfaces but leaves a visible gap and potential rocking point on any surface with a taper, bevel, or compound angle. The adjustable washer system on this horn solves that directly: the washers conform to the surface angle, pulling the entire base into full, flush contact. Combined with the ball link pivot and aluminum construction, this is a noticeably more refined installation than a basic nylon horn — appropriate for the 35–100cc aircraft class where hardware quality is expected to match the rest of the build.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdiv style=\"background-color: #f5f5f5; padding: 12px; border-radius: 6px;\"\u003e\n\u003cstrong\u003eModeler's tip:\u003c\/strong\u003e The ball link included is brass and fits standard 3mm threaded pushrod ends — the same thread used on most M3 clevises and commercially available pushrods. If you're running a 4mm pushrod system, you'll need a separate adapter or a different horn. When in doubt, measure your existing clevis thread before ordering.\u003c\/div\u003e","brand":"Gator-RC","offers":[{"title":"Default Title","offer_id":46988579242206,"sku":"GRC-CH-225","price":5.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/1436\/6686\/files\/70mm_adj_cntrl_horn3.png?v=1777844085","url":"https:\/\/www.gator-rc.com\/products\/control-horn-70mmx4mm-adj-w-3mm-ball-link-and-threaded-rod","provider":"Gator RC","version":"1.0","type":"link"}