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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
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4.3 ★★★★★
Based on 1213 reviews
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Product Reviews
★★★★★ 5
Fantastic writing and non-stop action
Format: Kindle
This is a promising, fantastic beginning to what will be a 4-book series. Some readers may be content to read only the first 2 books, but I think you'll find that the story is so good that you'll want to keep reading books 3 and 4.
Book 1 is about omega Elvana's introduction to the "Starling" brothers and their search for another missing person, Kelly. It's a bit of a rocky start, with deception and betrayal a key element. Hardly an auspicious beginning. Each member has their own path and purpose in the pack. Their interactions and the resulting narrative are so well-written that I found it difficult to put down.
There is a cliffhanger that will have you reaching for book 2 as you finish, so make sure you have it on hand.
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Reviewed in the United States on September 27, 2023
★★★★★ 4
Fun read
Format: Kindle
I'm not really into mafia books but I love Roxy Collin's other series so I decided to give it a try. It had the same great romance, spice, swoon-worthy characters and exciting plot that are her signature. Arben was my favorite, although it was a bit sudden how quickly he changed from ignoring her to wanting to be pack. There were almost too many twists/layers of lies to keep track of but I'm looking forward to reading the other books.
The only thing that detracted from the story for me was the need for a bit more proofreading. It was mentioned that Kelly is a female and male at different points, leading me to think she changed her mind at some point about the character's gender but didn't go back and edit it to align in all places. Like another reviewer pointed out, step siblings are different than half siblings. They are incorrectly referred to as step siblings because they (allegedly) share the same biological dad. There are a few other typos as well but those aren't a big deal.
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Reviewed in the United States on March 18, 2025
★★★★★ 5
Stepbrothers, Secrets, and Sizzling Heat
Format: Kindle
Twisted Lies by Roxy Collins is a wild ride through family secrets, amnesia, and a steamy stepbrother romance. When Kelly discovers her life is built on lies, she ends up tangled with three alpha stepbrothers and an assassin who once helped her through a heat.
The tension? Off the charts!
The heat is real, and the complications are messy in the best way. Full of twists, secrets, and fated mates? You'll be hooked from page one!
Love omegaverse drama with a dash of taboo? This one's for you!
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Reviewed in the United States on September 10, 2024
★★★★★ 3
Good read
Format: Kindle
The book has some good twists and turns, but truthfully I was so confused on some things. It didn't have a good flow for me personally. Not sure if it's due to typos or using him/her wrongly, but I thought Kelly was both a guy and a girl. Actually I still don't know, and it made me incredibly frustrated. It would refer to Kelley as him or he, and then again in another part of the story as her she and sister. On to the next book, I hope there is some clarity and a smoother flow. This is a slow burn, and I just don't know how much I care for the Alphas yet. Idk if I recommend.
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Reviewed in the United States on February 8, 2023
★★★★★ 5
the lies
Format: Kindle
This is amazing fast pace read that is full of plot twists and lies that keep getting bad. This is a story we’re a omega has been lied to by her mother and finds out that someone is slowing dieing. 3 alpha take the omega and feed her more lies so they can use her against her father so they can find their mate Kelly. This is a dark read and ends in a cliffhanger and so good.
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Reviewed in the United States on June 13, 2023