{"product_id":"0-5-mod-spur-gear-8-16teeth-brass-metal-rc-car-boat-motor","title":"0.5 Mod Transmission Spur Gear 8-16Teeth Metal Brass RC Model Car Boat Toy Motor","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e0.5 Mod Spur Gear — Precision Brass \u0026amp; Metal Drive Components for RC Builds\u003c\/h2\u003e\n    \u003cp\u003eWhen a stripped or mismatched gear brings your RC car, boat, or motorized toy to a dead stop, finding an exact-spec replacement becomes the bottleneck. Hobbyists, makers, and small-scale engineers who demand dimensional accuracy need a 0.5 mod spur gear they can trust to mesh cleanly and hold up under repeated load cycles.\u003c\/p\u003e\n    \u003cp\u003eThese 0.5 module transmission spur gears are available in brass and iron variants, spanning 8 to 36 teeth across sizes including 1008A, 1010A, 1012, 1012A, 1014, 1015, and the compound 2036B. Bore diameters typically range from 1.9 mm to 3.175 mm (~0.075–0.125 in) depending on the selected size, with overall gear outer diameters scaling proportionally to tooth count. The 2036B variant is a dual-stage compound gear (10T driving \/ 36T driven) machined from iron for higher torque applications.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include RC drift and touring car gearbox rebuilds requiring 0.5 mod spur gear replacements, DIY robotic drive trains using small brass pinion and spur gear sets, and motorized toy mechanisms needing compact metal transmission gears with consistent pitch accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for 0.5 module (Mod 0.5) gear systems. Verify bore diameter and tooth count against your existing drivetrain before ordering. The 2036B compound gear suits reduction-stage applications; single gears suit direct-mesh configurations.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These 0.5 Mod Spur Gears\u003c\/h2\u003e\n    \u003cdiv class=\"hdiy-list\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n        \u003cstrong\u003eStandardized 0.5 Module Pitch\u003c\/strong\u003e\u003cbr\u003e\n        Machined to Mod 0.5 specification for consistent tooth-to-tooth mesh with any compatible 0.5 mod pinion or rack, eliminating backlash caused by pitch mismatch.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🟡\u003c\/span\u003e\n        \u003cstrong\u003eBrass \u0026amp; Iron Material Options\u003c\/strong\u003e\u003cbr\u003e\n        Brass variants (1008A–1015) offer corrosion resistance and low friction for lightweight RC and toy applications; the iron 2036B compound gear handles higher torque reduction stages.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n        \u003cstrong\u003eWide Tooth-Count Range (8–36T)\u003c\/strong\u003e\u003cbr\u003e\n        Single gears from 8 to 15 teeth plus a compound 10T\/36T option cover a broad range of gear ratios, letting you tune speed vs. torque for your specific drivetrain.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e\n        \u003cstrong\u003eCNC-Consistent Bore Sizing\u003c\/strong\u003e\u003cbr\u003e\n        Bore diameters are held to tight tolerances per size code (1.9 mm, 2.3 mm, 2.9 mm, 3.175 mm) so gears seat firmly on motor shafts without wobble or slippage.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n        \u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e\u003cbr\u003e\n        Available in Pack of 1, 2, 5, 10, or 30 — order a single replacement or stock up for a full build run or workshop inventory.\n      \u003c\/div\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n        \u003cstrong\u003eCompound Reduction Variant (2036B)\u003c\/strong\u003e\u003cbr\u003e\n        The iron 2036B integrates a 10-tooth drive stage and a 36-tooth driven stage in one body, enabling compact two-stage reduction without a separate idler shaft.\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ch2\u003e📐 Technical Specifications — 0.5 Mod Spur Gears\u003c\/h2\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eModule (Mod)\u003c\/th\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTooth Count Options\u003c\/th\u003e\n\u003ctd\u003e8T, 10T, 12T, 14T, 15T, 10T\/36T (compound)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSize Codes\u003c\/th\u003e\n\u003ctd\u003e1008A, 1010A, 1012(2.3), 1012A(1.9), 1014(3.175), 1015(2.9), 2036B(Iron)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e1.9 mm \/ 2.3 mm \/ 2.9 mm \/ 3.175 mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass (1008A–1015 sizes); Iron (2036B compound)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eGear Type\u003c\/th\u003e\n\u003ctd\u003eSpur gear (single); Compound spur gear (2036B)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFace Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePressure Angle\u003c\/th\u003e\n\u003ctd\u003e20° (standard for Mod 0.5 spur gears)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eNatural brass \/ bare iron (uncoated)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePack Quantities\u003c\/th\u003e\n\u003ctd\u003e1 \/ 2 \/ 5 \/ 10 \/ 30 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eRC cars, RC boats, toy motors, robotics, DIY drivetrains\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right size code for my RC car or boat?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the bore diameter to your motor or shaft diameter first: 1012A(1.9) fits ~1.9 mm shafts, 1012(2.3) fits ~2.3 mm, 1015(2.9) fits ~2.9 mm, and 1014(3.175) fits ~3.175 mm (1\/8 in) shafts. Then confirm the tooth count matches your existing pinion's module (must be Mod 0.5) and desired gear ratio. If unsure, measure your current gear's bore with a caliper before ordering.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these gears strong enough for high-speed RC applications?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass spur gears (1008A–1015) are well-suited for lightweight RC cars, boats, and toy motors running at typical hobby speeds. They provide good wear resistance and low noise. For higher-torque or higher-load applications — such as reduction stages — the iron 2036B compound gear offers greater strength. For extreme-duty racing applications, verify load ratings against your motor's output torque.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWill brass gears corrode if used in RC boats or wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBrass has inherent corrosion resistance and performs well in occasional moisture exposure typical of RC boat use. For prolonged submersion or saltwater environments, apply a light gear lubricant or grease to the tooth faces and bore to extend service life. The iron 2036B variant is more susceptible to surface oxidation in wet conditions and benefits from a protective lubricant coating.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the 2036B compound gear and when should I use it?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe 2036B is a two-stage compound spur gear machined from iron, combining a 10-tooth drive pinion and a 36-tooth driven gear in a single body. It is used in reduction gearboxes where you need to step down speed and multiply torque in a compact space — common in motorized toy mechanisms, small robot joints, and RC transmission stages. It replaces two separate gears and an idler shaft in many designs.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these compatible with plastic pinion gears?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes, as long as the mating pinion is also Mod 0.5. Metal-to-plastic gear pairing is common in RC and toy applications; the softer plastic pinion typically acts as the sacrificial wear component, protecting the motor shaft. Ensure the plastic pinion's bore and tooth profile match before meshing. Avoid excessive preload, which accelerates wear on the plastic gear.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich pack size should I order?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eFor a single repair or replacement, Pack of 1 or 2 is sufficient. If you are building multiple RC models or stocking a workshop, Pack of 5 or 10 offers a better per-unit value. Pack of 30 is suited for production runs, classroom robotics kits, or resellers who need consistent inventory of a specific size. Compare the per-unit price across pack sizes shown on the product page to find the best fit for your volume.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I measure my existing gear to confirm compatibility?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eUse a digital caliper to measure: (1) bore diameter — the hole through the center; (2) outer diameter (OD) — tip to tip across the gear; (3) tooth count — count all teeth around the gear. For a Mod 0.5 gear, OD ≈ (tooth count + 2) × 0.5 mm. If your measured OD matches this formula, the gear is Mod 0.5 and compatible with these gears.\u003c\/p\u003e\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your Spur Gear Size and QTY above, then add to cart.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right size code for my RC car or boat?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the bore diameter to your motor or shaft diameter first: 1012A(1.9) fits ~1.9 mm shafts, 1012(2.3) fits ~2.3 mm, 1015(2.9) fits ~2.9 mm, and 1014(3.175) fits ~3.175 mm (1\/8 in) shafts. Then confirm the tooth count matches your existing pinion's module (must be Mod 0.5) and desired gear ratio.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these gears strong enough for high-speed RC applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass spur gears (1008A–1015) are well-suited for lightweight RC cars, boats, and toy motors running at typical hobby speeds. For higher-torque applications, the iron 2036B compound gear offers greater strength.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will brass gears corrode if used in RC boats or wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brass has inherent corrosion resistance and performs well in occasional moisture exposure typical of RC boat use. Apply a light gear lubricant for prolonged or saltwater exposure. The iron 2036B benefits from a protective lubricant coating in wet conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the 2036B compound gear and when should I use it?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 2036B is a two-stage compound spur gear combining a 10-tooth drive pinion and a 36-tooth driven gear in one iron body. Use it in reduction gearboxes to step down speed and multiply torque in a compact space.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these compatible with plastic pinion gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, as long as the mating pinion is also Mod 0.5. Metal-to-plastic pairing is common in RC and toy applications. Ensure the plastic pinion's bore and tooth profile match before meshing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which pack size should I order?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Pack of 1 or 2 suits single repairs. Pack of 5 or 10 offers better per-unit value for multiple builds. Pack of 30 is ideal for production runs, classroom kits, or resellers.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I measure my existing gear to confirm compatibility?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure bore diameter, outer diameter (OD), and tooth count with a digital caliper. For Mod 0.5, OD ≈ (tooth count + 2) × 0.5 mm. If your measured OD matches this formula, the gear is Mod 0.5 compatible.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"1008A \/ 8 Teeth \/ Pack of 1","offer_id":52442816119058,"sku":"FASJSCS00195x1","price":4.11,"currency_code":"USD","in_stock":true},{"title":"1010A \/ 10 Teeth \/ Pack of 1","offer_id":52442816151826,"sku":"FASJSCS00196x1","price":4.22,"currency_code":"USD","in_stock":true},{"title":"1012(2.3) \/ 12 Teeth \/ Pack of 1","offer_id":52442816184594,"sku":"FASJSCS00197x1","price":4.28,"currency_code":"USD","in_stock":true},{"title":"1012A(1.9) \/ 12 Teeth \/ Pack of 1","offer_id":52442816217362,"sku":"FASJSCS00199x1","price":4.22,"currency_code":"USD","in_stock":true},{"title":"1014 (3,175) \/ 14 Teeth \/ Pack of 1","offer_id":52442816250130,"sku":"FASJSCS00200x1","price":4.22,"currency_code":"USD","in_stock":true},{"title":"1015(2.9) \/ 15 Teeth \/ Pack of 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\/ 15 Teeth \/ Pack of 5","offer_id":52442816512274,"sku":"FASJSCS00198x5","price":8.6,"currency_code":"USD","in_stock":true},{"title":"2036B(Iron) \/ 10T\/36T \/ Pack of 5","offer_id":52442816545042,"sku":"FASJSCS00194x5","price":14.06,"currency_code":"USD","in_stock":true},{"title":"1008A \/ 8 Teeth \/ Pack of 10","offer_id":52442816577810,"sku":"FASJSCS00195x10","price":14.06,"currency_code":"USD","in_stock":true},{"title":"1010A \/ 10 Teeth \/ Pack of 10","offer_id":52442816610578,"sku":"FASJSCS00196x10","price":14.06,"currency_code":"USD","in_stock":true},{"title":"1012(2.3) \/ 12 Teeth \/ Pack of 10","offer_id":52442816643346,"sku":"FASJSCS00197x10","price":15.15,"currency_code":"USD","in_stock":true},{"title":"1012A(1.9) \/ 12 Teeth \/ Pack of 10","offer_id":52442816676114,"sku":"FASJSCS00199x10","price":14.06,"currency_code":"USD","in_stock":true},{"title":"1014 (3,175) \/ 14 Teeth \/ Pack of 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2","offer_id":52442817102098,"sku":"FASJSCS00197x2","price":5.51,"currency_code":"USD","in_stock":true},{"title":"1012A(1.9) \/ 12 Teeth \/ Pack of 2","offer_id":52442817134866,"sku":"FASJSCS00199x2","price":5.29,"currency_code":"USD","in_stock":true},{"title":"1014 (3,175) \/ 14 Teeth \/ Pack of 2","offer_id":52442817167634,"sku":"FASJSCS00200x2","price":5.29,"currency_code":"USD","in_stock":true},{"title":"1015(2.9) \/ 15 Teeth \/ Pack of 2","offer_id":52442817200402,"sku":"FASJSCS00198x2","price":5.29,"currency_code":"USD","in_stock":true},{"title":"2036B(Iron) \/ 10T\/36T \/ Pack of 2","offer_id":52442817233170,"sku":"FASJSCS00194x2","price":7.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of3_23f81fe7-0287-4ee7-aa3e-385b80abdadf.jpg?v=1783607204","url":"https:\/\/homediyer.com\/products\/0-5-mod-spur-gear-8-16teeth-brass-metal-rc-car-boat-motor","provider":"HomeDIYer","version":"1.0","type":"link"}