1/10 DIY Mini Metal OHV Inline Fourcylinder Diesel Engine Model with Cooling System Upgraded Version 300+PCS Overview This 1/10 scale DIY metal engine model reproduces an OHV inline fourcylinder diesel engine with working cooling components. Constructed from stainless steel and aluminum alloy with anodic oxidation finish, Model DM115 is a handson mechanical kit that assembles into a motordriven, visually accurate running engine. The kit is designed for hobbyists, educators, and anyone who wants a durable, functional miniature engine for study or display. Key benefits Real mechanical experience: Metal components and moving parts provide an authentic feel when assembling and operating the engine, making mechanical concepts tangible. Functional demonstration: Motordriven operation lets you observe valve motion, pistons, camshaft, and cooling components in motion, useful for teaching or selfstudy. Durable and presentable: Stainless steel and aluminum alloy parts with anodic oxidation resist wear and keep a refined appearance suitable for desktop display. Portable and easy to power: Runs from standard 5V DC via USB or from the included 450mAh Li battery for over 60 minutes at full power after a 2 hour charge. Educational and collaborative: Over 300 parts and a moderate assembly time promote problem solving, fine motor skills, and teamwork in parentchild or classroom settings. What makes it stand out Upgraded metal construction for realistic weight and texture compared to plastic kits. Detailed OHV inline fourcylinder layout with a simulated cooling system and visible moving components. Motordriven operation plus battery and USB power options for flexible use. Complete kit in a gift box with installation tools and instructions. Specifications Model number DM115 Scale: 1/10 Materials: Stainless steel and aluminum alloy Coloring process: Anodic oxidation Number of parts: 300 plus pieces Drive mode: Motor driven External power: DC 5V via USB cable Battery: 450mAh lithium battery Charging time: 2 hours Run time: Over 60 minutes at full power Estimated assembly time: 4 hours Degree of difficulty: 4 of 5 Product dimensions: 18 x 9.2 x 14.5 cm Product weight: 1400 g Package dimensions: 20 x 20 x 15 cm Package weight: 2548 g Packing: Gift box Package contents 1 Engine kit set 1 Installation kit 1 Instruction manual Practical uses and scenarios Classroom demonstration: Use the model to demonstrate engine basics in physics or engineering classes, showing piston movement, valve timing, and cooling flow in a compact, visible format. Hobbyist assembly and display: Build as a weekend project, then display the working model on a desk or shelf to illustrate mechanical craftsmanship and engine operation. Parent and youth STEM activity: Assemble together to practice following instructions, tools use, and mechanical reasoning while fostering collaboration and curiosity. Assembly and operation notes The kit contains more than 300 metal parts and requires careful assembly. Plan approximately four hours for firsttime builders. Use the provided installation kit and follow the paper manual step by step. Work on a clean, welllit surface and keep small parts organized. Power the assembled model via the included USB cable to a DC 5V source or use the builtin 450mAh lithium battery. Charge fully for about two hours before first use. Expect over 60 minutes of continuous operation at full power on a full charge. Motordriven operation provides a consistent visual demonstration of the engine mechanism. Who this is for Students and educators seeking a handson mechanical teaching aid. Hobbyists who prefer metal kits with realistic motion and appearance. Parents looking for a collaborative STEM activity for older children and teens. This kit delivers a durable, metalbuilt, motordriven miniature diesel engine model that combines realistic mechanical motion with educational value and attractive presentation.