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Description
Four-stroke 15cc OHV Single-cylinder Vertical Internal Combustion Engine Model15cc Vertical OHV Single cylinder Four stroke Internal Combustion Engine Model Physical Experiment Educational Toys Features:. Industrial Engine: The vertical OHV single cylinder four stroke gasoline engine with deeply industrial style is built with half perspective window for visible internal running process, flexible cylinder head capable of opening and closing, independent lubricating system to fill 4T engine oil separately and electronic igniter
15cc Vertical OHV Single-cylinder Four-stroke Internal Combustion Engine Model Physical Experiment Educational Toys -Features:
.Industrial Engine: The vertical OHV single-cylinder four-stroke gasoline engine with deeply industrial style is built with half-perspective window for visible internal running process, flexible cylinder head capable of opening and closing, independent lubricating system to fill 4T engine oil separately and electronic igniter equipment.
.Delicate Technology: All aluminium alloy parts processed by CNC machine tool, electric pulse and line cutting, with a machining precision of 0.02mm, and the crankshaft treated with hard chrome electroplating after 40Gr quenching and tempering as well as finish turning, with a hardness of 55HRC and a precision of 0.01mm. With shrink fit, the main shafts&main shaft gears and cam&camshaft feature sturdy and durable assembly. The valve, used 40Gr quenching and tempering as well as finish turning, assembles with alloy valve pipe for wear&heat resistance.
.Incredible Craft: The distinctive desktop engine model with stable&reliable structure and a sustainable use of 30mins generally, is easy to operate and friendly to beginners, allowing you to experience the unique mechanical operation charm from the engine.
.Collectible Gift: This model makes an amazing addition to any collections for the fans of machines and engine models. Perfect for an interesting science educational toy and a high-end&creative gift for families and friends.
.Notes: The base, power distribution cabinet and tank are not included in the simple edition, please buy the high-end edition if needed. Please operate the machine in line with the instructions to avoid damage to the machine by improper operation. Recommended for 14+.
Specifications:
.Material: Metal
.Bare Weight: 1.9kg
.Displacement: 15CC
.Cylinder Diameter: 25mm
.Stroke: 24mm
.Compression Ratio: 5/1
.Valve Mechanism: OHV (Overhead Valve)
.RPM Range: 800-5000rpm
.Lubrication Method: Wet Sump/Splash Lubrication
.Lubricating Oil Type: 5W40（4T）
.Lubricating Oil Filling Capacity: 25mL on Open Cylinder Head/35mL on Enclosed Cylinder Head
.Cooling Mode: Air-cooling
.Starting Mode: Manual Pull (Rope)
.Ignition method: CDI Electronic lgnition
.Starting Voltage: Approx 6V (Without Battery)
.Product Dimensions: 21 x 12 x 27cm
.Product Weight: 2200g
.Package Dimensions: 25 x 15 x 32cm
.Package Weight: 2500g
.Packing: Box
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Great
Size: Medium, Color: (001) Black / Black / Pitch Gray
The best pair of work / workout / casual socks I've bought in long time! They're no show on all my sneakers, incredibly comfortable and they never move.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer:
Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free.
No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them.
Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day.
Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions.
Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently.
Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game.
If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks.
5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks.
Comfortable Fit:
They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching.
Great for Everyday Wear:
Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky.
Durable & Long-Lasting:
These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly.
Reliable Under Armour Quality:
You can tell they’re well made. Consistent quality that matches what you expect from Under Armour.
Overall Impression:
When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Quality Under Armour socks
Size: Large, Color: (100) White / White / Black
Nice medium thick sock that is breathable but cushioned. It stays put in the show and doesn’t fall down. Fit is true to size, no show/minimal show
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Perfect Pairs
Size: Large, Color: (100) White / White / Black
Very comfortable, soft & affordable..
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Reviewed in the United States on May 19, 2026
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