{"product_id":"cover-head-vtwin-engine-mechanical-building-blocks","title":"Cover Head V-Twin Engine Building Blocks","description":"\u003c!-- ============================================================\n     BrickRoyal · BR0015 Cover-Head V-Twin Engine\n     产品详情页(手机端折叠版)\n     用法:Shopify 后台 → Products → BR0015 → Description →\n          点内容框右上角 \"\u003c\u003e\" (Show HTML) → 粘贴全部 → 手机预览 → 存 Active\n     动力说明:电机\/喷雾\/灯\/音效出厂预装,接线随组装完成;需自备 6 × AAA + 清水\n     ⚠️ 若厂家确认随盒送电池,把 notice\/spec 的电池行改为 included\n     ============================================================ --\u003e\n\u003cp\u003e\u003clink href=\"https:\/\/fonts.googleapis.com\" rel=\"preconnect\"\u003e \u003clink crossorigin=\"\" href=\"https:\/\/fonts.gstatic.com\" rel=\"preconnect\"\u003e \u003clink rel=\"stylesheet\" href=\"https:\/\/fonts.googleapis.com\/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500;12..96,700\u0026amp;family=Inter:wght@400;500;600\u0026amp;display=swap\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n.br-pdp{\n  --br-ink:#0E1A2F;\n  --br-ink-70:rgba(14,26,47,.70);\n  --br-ink-45:rgba(14,26,47,.45);\n  --br-surface:#FFFFFF;\n  --br-paper:#EDF1F7;\n  --br-line:#D6DEE9;\n  --br-gold:#C9A227;\n  --br-brass:#9C7A22;\n  --br-brass-soft:#C0982E;\n  --br-radius:14px;\n  --br-gap:clamp(26px,5vw,42px);\n  --br-display:\"Bricolage Grotesque\",\"Inter\",system-ui,-apple-system,sans-serif;\n  --br-body:\"Inter\",system-ui,-apple-system,\"Helvetica Neue\",sans-serif;\n  font-family:var(--br-body);\n  color:var(--br-ink);\n  background:var(--br-paper);\n  -webkit-font-smoothing:antialiased;\n  max-width:820px;\n  margin:0 auto;\n  padding:clamp(20px,5vw,44px) clamp(14px,4vw,26px) 64px;\n  box-sizing:border-box;\n}\n.br-pdp *,.br-pdp *::before,.br-pdp *::after{box-sizing:border-box;}\n\n\/* 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14px;}\n.br-pdp__lede{font-size:15px;line-height:1.66;color:var(--br-ink-70);margin:0;max-width:56ch;}\n\n\/* ---------- 关键规格徽章 ---------- *\/\n.br-pdp__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:22px 0 0;}\n.br-pdp__stat{background:var(--br-surface);border:1px solid var(--br-line);border-radius:12px;padding:13px 10px;text-align:center;}\n.br-pdp__statNum{font-family:var(--br-display);font-size:clamp(16px,3.6vw,20px);font-weight:700;line-height:1;color:var(--br-ink);font-variant-numeric:tabular-nums;}\n.br-pdp__statLabel{display:block;margin-top:6px;font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--br-ink-45);line-height:1.3;}\n\n\/* ---------- 永远可见的\"包含什么\"提示条(不折叠) ---------- *\/\n.br-pdp__notice{\n  margin:22px 0 var(--br-gap);\n  background:var(--br-surface);\n  border:1px solid var(--br-line);\n  border-left:4px solid var(--br-brass);\n  border-radius:12px;padding:18px 18px 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12px;}\n.br-pdp__a p:last-child{margin-bottom:0;}\n.br-pdp__a strong{color:var(--br-ink);}\n.br-pdp__list{margin:0 0 12px;padding:0;list-style:none;}\n.br-pdp__list li{position:relative;padding:0 0 8px 20px;line-height:1.6;}\n.br-pdp__list li::before{content:\"\";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--br-brass);}\n.br-pdp__item[open] .br-pdp__a{animation:br-reveal .26s ease both;}\n@keyframes br-reveal{from{opacity:0;transform:translateY(-5px);}to{opacity:1;transform:none;}}\n\n\/* 规格表 *\/\n.br-pdp__spec{width:100%;border-collapse:collapse;font-size:14.5px;}\n.br-pdp__spec th,.br-pdp__spec td{text-align:left;padding:10px 0;border-bottom:1px solid var(--br-line);vertical-align:top;}\n.br-pdp__spec th{font-weight:600;color:var(--br-ink);width:44%;padding-right:14px;}\n.br-pdp__spec td{color:var(--br-ink-70);}\n.br-pdp__spec tr:last-child th,.br-pdp__spec tr:last-child td{border-bottom:none;}\n\n\/* 页脚 *\/\n.br-pdp__foot{margin-top:var(--br-gap);padding:22px 20px;background:var(--br-ink);border-radius:var(--br-radius);color:#fff;}\n.br-pdp__footTitle{font-family:var(--br-display);font-size:18px;font-weight:700;margin:0 0 6px;}\n.br-pdp__footText{font-size:14.5px;line-height:1.6;margin:0;color:rgba(255,255,255,.75);}\n.br-pdp__footText a{color:var(--br-gold);text-decoration:none;font-weight:500;}\n.br-pdp__footText a:hover{text-decoration:underline;}\n\n@media (max-width:600px){\n  .br-pdp__stats{grid-template-columns:repeat(2,1fr);}\n  .br-pdp__q{font-size:15px;padding:15px;gap:12px;}\n  .br-pdp__a{padding:0 15px 18px 49px;font-size:14.5px;}\n  .br-pdp__spec th{width:52%;}\n}\n@media (prefers-reduced-motion:reduce){.br-pdp *{animation:none !important;transition:none !important;}}\n\u003c\/style\u003e\n\u003cdiv class=\"br-pdp\"\u003e\n\u003c!-- ===== HERO ===== --\u003e\u003cheader class=\"br-pdp__hero\"\u003e\u003cspan class=\"br-pdp__plate\"\u003eBR0015 · Engine Series\u003c\/span\u003e\n\u003cp class=\"br-pdp__eyebrow\"\u003eMotorized · Retro V-Twin\u003c\/p\u003e\n\u003ch1 class=\"br-pdp__title\"\u003eCover-Head V-Twin Engine\u003c\/h1\u003e\n\u003cp class=\"br-pdp__lede\"\u003eAn 846-piece running model of a retro cover-head V-twin. Transparent covers show the pistons cycling; a chain drives the gears; and it breathes water mist from twin pipes with lights, engine sound and four speeds.\u003c\/p\u003e\n\u003cdiv class=\"br-pdp__stats\"\u003e\n\u003cdiv class=\"br-pdp__stat\"\u003e\n\u003cspan class=\"br-pdp__statNum\"\u003e846\u003c\/span\u003e\u003cspan class=\"br-pdp__statLabel\"\u003ePieces\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"br-pdp__stat\"\u003e\n\u003cspan class=\"br-pdp__statNum\"\u003e14+\u003c\/span\u003e\u003cspan class=\"br-pdp__statLabel\"\u003eAge\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"br-pdp__stat\"\u003e\n\u003cspan class=\"br-pdp__statNum\"\u003eV-Twin\u003c\/span\u003e\u003cspan class=\"br-pdp__statLabel\"\u003e2 cylinders\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"br-pdp__stat\"\u003e\n\u003cspan class=\"br-pdp__statNum\"\u003e4\u003c\/span\u003e\u003cspan class=\"br-pdp__statLabel\"\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/header\u003e\u003c!-- ===== 永远可见:包含什么 \/ 需自备 ===== --\u003e\n\u003cdiv class=\"br-pdp__notice\"\u003e\n\u003cp class=\"br-pdp__noticeTitle\"\u003eWhat's in the box\u003c\/p\u003e\n\u003cdiv class=\"br-pdp__row\"\u003e\n\u003cspan class=\"br-pdp__tag br-pdp__tag--in\"\u003eIncluded\u003c\/span\u003e \u003cspan class=\"br-pdp__rowText\"\u003e846 bricks · transparent cylinder covers · \u003cb\u003emotor, spray, LED and engine-sound modules pre-installed\u003c\/b\u003e · display base with engraved nameplate · printed manual. The wiring installs step by step as you build.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"br-pdp__row\"\u003e\n\u003cspan class=\"br-pdp__tag br-pdp__tag--need\"\u003eYou supply\u003c\/span\u003e \u003cspan class=\"br-pdp__rowText\"\u003e\u003cb\u003e6 × AAA batteries\u003c\/b\u003e to run the motor, lights and sound, plus \u003cb\u003eclean water\u003c\/b\u003e for the mist. Batteries not included (air-freight rules).\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== 折叠内容 ===== --\u003e\n\u003csection class=\"br-pdp__section\"\u003e\n\u003cdiv class=\"br-pdp__sectionHead\"\u003e\n\u003cspan class=\"br-pdp__num\"\u003e01\u003c\/span\u003e\n\u003ch2 class=\"br-pdp__sectionTitle\"\u003eThe build, in short\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdetails open=\"\" class=\"br-pdp__item\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eOverview\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eThe BR0015 recreates a classic retro cover-head V-twin motorcycle engine in 846 precision ABS bricks. As you build, you assemble every core part — cylinders, piston groups, timing chain, gears, exhaust pipes and valves — and can take them apart and rebuild them.\u003c\/p\u003e\n\u003cp\u003eThe motor, spray, light and sound modules are \u003cstrong\u003epre-installed at the factory\u003c\/strong\u003e, with the wiring going in step by step during the build. Add 6 AAA batteries and clean water, and the engine runs as a multi-sensory desktop model. Built for adult mechanical fans, STEM learners and builders aged 14+.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\" class=\"br-pdp__item\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003ePowered — build it, then run it\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eThere's no soldering. The electric parts are already built into the modules; you fit the wiring as the manual directs while assembling. When the engine is finished, load \u003cstrong\u003e6 AAA batteries\u003c\/strong\u003e, add clean water to the mist tank, and switch it on to see it run.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"br-pdp__section\"\u003e\n\u003cdiv class=\"br-pdp__sectionHead\"\u003e\n\u003cspan class=\"br-pdp__num\"\u003e02\u003c\/span\u003e\n\u003ch2 class=\"br-pdp__sectionTitle\"\u003eSee it run\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eChain \u0026amp; multi-gear linkage\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eBuilt-in power drives the whole transmission. The timing chain turns interlocking gear sets in sync — clockwise or counter-clockwise — and the pistons reciprocate in rhythm, recreating the running motion of a real internal-combustion engine. Every gear, chain and link meshes tightly for smooth motion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003e4 speeds, lights \u0026amp; engine sound\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eFour shift settings adjust the gear and piston speed — idle, low, medium and high. Engine start-up and acceleration sounds and indicator lights run in sync with the motion, so sight, sound and movement come together for real display presence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eWater-mist exhaust\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eAn atomizer module sends a steady mist from the twin exhaust pipes for a smoke-like running effect. \u003cstrong\u003eUse clean water only\u003c\/strong\u003e, and don't overfill the tank. Keep the mist away from eyes, skin and other electronics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"br-pdp__section\"\u003e\n\u003cdiv class=\"br-pdp__sectionHead\"\u003e\n\u003cspan class=\"br-pdp__num\"\u003e03\u003c\/span\u003e\n\u003ch2 class=\"br-pdp__sectionTitle\"\u003eDesign \u0026amp; make\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eV-twin architecture \u0026amp; clear covers\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eTwo cylinders sit at the iconic V angle, faithful to the layout of a retro motorcycle engine. Black transparent cover cylinders expose the pistons, connecting rods and valves, so you can watch the full intake, exhaust and reciprocating cycle instead of just imagining it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eMaterials \u0026amp; craftsmanship\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eParts use high-rigidity ABS with a firm clutch that holds up to repeated builds. Electroplated silver bricks give the pipes, shells and exhausts a real metal look, and custom transparent bricks form the see-through covers. Gears and chain are precisely sized for smooth, jam-free motion. A dedicated display base with engraved nameplate keeps it steady for display and photos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"br-pdp__section\"\u003e\n\u003cdiv class=\"br-pdp__sectionHead\"\u003e\n\u003cspan class=\"br-pdp__num\"\u003e04\u003c\/span\u003e\n\u003ch2 class=\"br-pdp__sectionTitle\"\u003eSpecs, learning \u0026amp; safety\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eFull specifications\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003ctable class=\"br-pdp__spec\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePiece count\u003c\/th\u003e\n\u003ctd\u003e846 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAssembled size\u003c\/th\u003e\n\u003ctd\u003e12.4 × 7.1 × 8.3 in (31.5 × 18 × 21 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGift box size\u003c\/th\u003e\n\u003ctd\u003e9.0 × 4.2 × 13.3 in (22.8 × 10.6 × 33.8 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGross weight (packed)\u003c\/th\u003e\n\u003ctd\u003e3.0 lb (1.375 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended age\u003c\/th\u003e\n\u003ctd\u003e14+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLayout\u003c\/th\u003e\n\u003ctd\u003eCover-head V-twin (two cylinders), 4-speed adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterials\u003c\/th\u003e\n\u003ctd\u003eHigh-strength ABS plastic + custom transparent covers; pre-installed motor, spray, LED and sound modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003eRequires 6 × AAA batteries (not included) + clean water for the mist. Motor and modules are factory pre-installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eWhat you'll learn (STEM)\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003eBuilding it demonstrates gear transmission, chain timing drive, crankshaft-piston reciprocating motion and valve open-close linkage. Along the way you learn how a motorcycle engine is put together and how its power cycle works — a vivid teaching aid that builds spatial thinking and mechanical reasoning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"br-pdp__item\" open=\"\"\u003e\n\u003csummary class=\"br-pdp__q\"\u003e\u003cspan class=\"br-pdp__stud\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\u003cspan class=\"br-pdp__qText\"\u003eSafety \u0026amp; care\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"br-pdp__a\"\u003e\n\u003cp\u003e\u003cstrong\u003eSmall parts.\u003c\/strong\u003e Contains small bricks — choking hazard. Age 14+. Keep small parts away from children under 3. Don't force the gears or chain. Build strictly by the manual.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBatteries.\u003c\/strong\u003e Use 6 AAA alkaline batteries (not included). Don't mix old and new. Remove them for long-term storage to avoid leakage and circuit damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWater mist.\u003c\/strong\u003e Clean water only, and don't overfill. Keep the mist away from eyes, skin and other electronics, and keep water out of the gear and light areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003cfooter class=\"br-pdp__foot\"\u003e\n\u003cp class=\"br-pdp__footTitle\"\u003eQuestions before you build?\u003c\/p\u003e\n\u003cp class=\"br-pdp__footText\"\u003eEmail \u003ca href=\"mailto:support@brickroyal.com\"\u003esupport@brickroyal.com\u003c\/a\u003e — a real person answers, usually within 24 hours on business days. Missing a piece? We replace it free.\u003c\/p\u003e\n\u003c\/footer\u003e\n\u003c\/div\u003e","brand":"BrickRoyal","offers":[{"title":"Default Title","offer_id":43694434680945,"sku":"BR697871813175","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/2803\/5185\/files\/BRICKROYAL_Cover_Head_V-Twin_Engine_Building_Blocks_846PCS_Motorized_Brick_Model_with_Spray_Lights_Engine_Sound.png?v=1784968875","url":"https:\/\/brickroyal.com\/products\/cover-head-vtwin-engine-mechanical-building-blocks","provider":"BrickRoyal","version":"1.0","type":"link"}