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Why You'll Love It
- Therapeutic crafting experience
- Sense of accomplishment
- Healthy stress relief activity
- Stunning decor on your bookshelf
- Museum-quality realism
Pairs well with
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Shipping Policy
Thank you for your love of surplusfun. If you are not satisfied with our product, please let us know and we can help you return it within 30 days of receipt, minus return shipping and handling.
We will process your order within 1-3 business days and shipping to most countries worldwide takes 7-21 business days!(USA, Canada, Australia, New Zealand, UK, Germany, Switzerland, France, Spain, Italy, Singapore, Norway, Denmark, Japan, Korea)
Returns are allowed
- Received damaged product (excluding outer packaging damaged in transit)
- Products received in error
Please note, returns or exchanges are not accepted for opened or used items.
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Email Us:
For any general questions, support, or inquiries regarding our products and services, please email us at service@surplusfun.com. Our dedicated team strives to respond to all emails within 24 hours, ensuring you receive timely assistance.Our customer service representatives are available Monday through Friday from 9 AM to 5 PM (EST) to address any concerns or questions you might have.
Introduction:
The RETROL team has spent 4 months designing and developing this new Hit & Miss engine model, designated as "HM-01". This hit and miss engine adopts carefully selected high-quality materials and exquisite craftsmanship to assure the engine's reliability and durability. The design features a transparent, adjustable flow main oil cup, a new carburettor and a reverberating exhaust pipe. The two large flywheels are well weighted, with a spring loaded ball and split wide face pulley, making the engine very practical for power output. A special design with a rarely seen "fast and slow gear change" allows the engine to be switched between super slow speed and high speed for power output. This makes the engine more playable and the player more operational. Product technology: the whole machine Ferrari red paint using electrophoresis surface treatment process, the main components (body main body, flywheel, connecting rod, etc.) are made of stainless steel 304 casting, all assembly surface using CNC finishing, high carbon steel hardened one-piece crankshaft. This makes it not only a playable engine model, but also a highly collectible mechanical artwork.
Features:
Exquisite Manufacturing Process:
This Hit-and-Miss engine model is made of high quality metal materials and manufacturing process to ensure its quality and accuracy. Each component is precision machined and assembled, giving the whole model a very realistic look that will catch the eye.
Beautifully Detailed Features:
The model engine is beautifully designed and every detail has been carefully considered and manufactured. The engine surface is painted red to maintain the original look of the old agricultural machine, with realistic sound and movement, adding to the impressive vintage classic flavour.
Easy to Display and Operate:
the model engine is all set and ready to run, with an easy to understand operation and display. It can easily be displayed anywhere, for example on a desk or in a collection cabinet. You can easily control the operation of the engine by starting and stopping it manually.
Real Principles:
This model engine is also a great tool for education and learning. You can learn how the Hit-and-Miss engine works and its mechanics by watching it in action, igniting the fuel and producing unique sounds and movements when you start the engine.
A Beautiful Gift:
This model engine is perfect for mechanics enthusiasts, collectors and anyone interested in mechanical principles. It is not only a decorative piece but also a very valuable collector's item. It can also be an unforgettable gift for collectors of stationary model engines.
Warm Reminder:
The engine does not include accessories such as spark plugs, CDI ignition, fuel tank, fuel line, base and wooden box for the equipment, please purchase extra according to your needs.
Specifications:
Material: Metal
Colour: As Shown;
Brand: RETROL ENGINE
Type: HM-01
Shape: KIT or Pre-assembled Version
Dimensions: approx. 17*13*13 cm
Weight: approx. 1.8 KG
Displacement: 7cc
Cylinder: horizontal single cylinder
Stroke: four-stroke
Bore: 20mm
Stroke: 22mm
Cooling Method: Evaporative water-cooled
Lubrication Method: mixed oil + oil cup lubrication
Starting Method: manual starting
Ignition Method: CDI igniter
Spark plug type: imperial thread 1/4-32 ME-8 spark plug
Type of fuel: petrol 92# and above
Type of lubricant: four-stroke engine oil (oil to petrol at a 1:25 mix ratio)
Packing List:
1* Engine
1* Instructions

HM-01 7cc Antique Hit and Miss Engine 4-stroke Stationary Engine Horizontal IC Engine Model That Works
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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What Makes It Special
Mental Refresh
Immersing yourself in detailed crafting stimulates the mind, helping you reset, relax, and step away from everyday routines.
Meaningful Time Together
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Perfect as a Gift & Display Piece
Give more than a gift—offer a memorable experience that transforms into a unique decor piece to be proudly displayed.


Why Our Craft Kits Are So Popular
🧘♀️ 98% say the moment the wooden pieces fit together, stress simply melts away.
💑 97% of couples now enjoy creative evenings together — more fun, more connection, and better than another night of TV.
🎁 95% agree: “The best gift ever!” — far more meaningful than gift cards or chocolates.
FAQs
Please read our FAQs page to find out more.
What does your DIY Craft Kits comes with?
Our DIY craft kits come with everything you need, from detailed instruction guides, cutting tools, craft paper, solid plywood, and lights. However, due to shipping restrictions, we are unable to provide glue. However, we recommend that you purchase silicone glue for your craft projects at a bookstore or art store!
Shipping time and return policy
Thank you for your choice and support. Your order will usually ship within 72 hours, air freight to most countries is expected to take 7-21 business days.
We offer a 30-day return policy (30 days from receipt of your order) and only accept unused, undamaged merchandise.
Damaged and missing parts
Don't worry if parts are lost or damaged, we offer free replacement parts Contact Us
Problems encountered during model assembly
All our models are carefully selected, designed and tested many times. The quality is no problem. Considering the difference in hands-on ability of each person, it is inevitable that some problems will occur. Here we share some tips for model assembly
Due to the natural properties of wood, wooden parts are fragile and you need to use proper force to put them together
All wooden model drive parts or modules. Always use sandpaper to sand and wax block to lubricate. Make sure that the drive parts will work properly. This is the key to successfully completing your wooden model.
Stay patient, follow the instruction steps, pay attention to the front and back of the parts and orientation and you're done.
Good luck completing your model!
Thank you again for choosing our models and for your support!
✨ Designed with Care — for Quiet, Meaningful Moments
Each kit is thoughtfully designed with meticulous attention to detail, precisely crafted, and safety tested. Our Book Nooks are more than craft kits—they open the door to magical miniature worlds, invite shared moments, and create lasting joy. A quiet adventure you’ll never want to take off your shelf.



