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Sara A.
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RETROL HM-01 DIY Hit and Miss Engine Model with Complete Starter Kit and Accessories - One-Key Start System

RETROL HM-01 DIY Hit and Miss Engine Model with Complete Starter Kit and Accessories - One-Key Start System

Regular price $549.99
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  • The engine model is incredibly detailed and well-crafted. Perfect for both learning and display, it’s a great addition to my collection!
     James A.

  • RETROL HM-01 DIY Hit and Miss Engine Model with Complete Starter Kit and Accessories

    Unleash your inner engineer with the RETROL HM-01 Hit and Miss Engine Model, an exquisite fusion of art and mechanics. This unique engine model comes with a complete starter kit and accessories, making it a perfect addition to any mechanical enthusiast's collection.

    Standout Features:

    • Exquisite Manufacturing Process: Crafted from high-quality metal materials, each component is precision machined, ensuring a realistic appearance that lures the eye.
    • Beautifully Detailed Design: The striking Ferrari red paint and vintage-inspired styling maintain the original look of classic agricultural machines, complemented by authentic sounds and movements.
    • Easy to Display and Operate: Ready to run out of the box, this model can be easily displayed on a desk or in a collection cabinet, with straightforward manual operation for effortless control.
    • Educational Value: Witness the inner workings of the Hit-and-Miss engine firsthand! It's a perfect tool for learning about mechanical principles as you watch it ignite fuel and produce captivating movement.
    • A Beautiful Gift: Ideal for mechanics enthusiasts and collectors alike, this model is not just a decorative piece but a valuable collector's item that serves as a memorable gift.

    Package Includes:

    • 1 x RETROL HM-01 Hit & Miss Engine Model
    • 1 x Instructions
    • 1 x Stand
    • 1 x Fuel Tank
    • 1 x Oil Pipe
    • 1 x CDI Igniter
    • 1 x Spark Plug

    Specifications:

    • Material: Metal
    • Dimensions: approx. 17*13*13 cm
    • Weight: approx. 1.8 KG
    • Displacement: 7cc
    • Cylinder: Horizontal single cylinder
    • Stroke: Four-stroke
    • Cooling Method: Evaporative water-cooled

    Note: The engine requires additional accessories such as spark plugs and CDI ignition, which are not included. Please purchase these according to your needs.

    Don’t miss out!

    Transform your hobby or gift someone special with the RETROL HM-01 DIY Hit and Miss Engine Model. Click Buy Now and experience the perfect blend of education, entertainment, and engineering excellence!

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    About Shipping

    Q1: Do you offer worldwide shipping?
    A1: Absolutely! We proudly provide global shipping services, bringing our engine models to enthusiasts around the world.

    Q2: Where do your products ship from?
    A2: All orders are shipped directly from our warehouse in China, ensuring quality and efficiency in every package.

    Q3: How much does shipping cost?
    A3: Great news—international shipping is completely free! We want to make your shopping experience seamless and enjoyable.

    Q4: How long will it take for my order to arrive?
    A4: Delivery times may vary based on your location. For detailed estimates, please refer to the “Estimated Delivery Time” section on our website.

    Q5: How can I track my order?
    A5: Tracking your package is easy! Simply use 17track.net with the tracking number provided. Need assistance? Reach out to our friendly support team at support@diyengmod.com, and we’ll keep you updated every step of the way.

    Let me know if you'd like further tweaks!

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    About Payment

    Q1: What payment methods can I use?
    A1: We accept payments via PayPal and major credit cards, providing you with secure and convenient options to complete your purchase.

    Q2: What should I do if my payment is declined?
    A2: If your credit card payment is declined, don’t worry! You can either contact Stripe support for assistance or switch to PayPal to finalize your order. We’re here to ensure a smooth checkout experience!

    Q3: Can I cancel my order?
    A3: Yes! If your order hasn’t been shipped yet, just email us at support@yourdomain.com. We’ll cancel the order and process a full refund for you.

    Q4: Is my personal information safe on your website?
    A4: Absolutely. Your privacy and security are our top priorities. We use advanced encryption and secure systems to protect your sensitive information, both online and offline. You can shop with confidence!

    Q5: What happens if I provided the wrong shipping address?
    A5: Mistakes happen, and we’ve got you covered! If the shipping address is incorrect, your package will be returned to us after a failed delivery attempt. Once we receive it, we’ll reach out to confirm the correct address and arrange for reshipment.

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    About Return & Refunds

    Q1: What items are eligible for return?
    A1: We accept returns or exchanges within 30 days of purchase. To qualify, items must be unused, unwashed, unworn, and in their original condition and packaging.

    Q2: How do I return an item?
    A2: To start a return, email our support team at support@diyengmod.com to confirm your eligibility. Once approved, we’ll provide you with detailed return instructions. After shipping the item back, please share the tracking number with us to ensure a smooth process.

    Q3: What is your refund policy?
    A3: Refunds are typically processed within 1-5 business days after we confirm your cancellation or receive your returned item.

    Q4: How will I receive my refund?
    A4: Refunds will be issued to the original payment method used during checkout, ensuring a hassle-free experience for you.

    View full details

    Customer Reviews

    Based on 6 reviews
    83%
    (5)
    17%
    (1)
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    R
    Ralf Ziegler
    great toy for big boys

    The kit was professionally packaged and all parts were manufactured with great precision. The operating instructions are also very clearly written and make the assembly very safe. I would like to make a small comment at this point. It would be useful to mark the fuel screw and the air screw on the carburetor for optimal adjustment so that you don't have to spend a long time trying when you start it up for the first time.
    Thank you for this very well-made model.

    G
    Gerard Andrews
    Very good first time engine kit

    Kit of parts arrived in 15 days from China, very well packed. Instructions were fair at best. Illustrations were mostly used, but the needed details for carburetor and valve adjustments were lacking and/or confusing. Assembly took about two hours , then another 3 hrs to actually get the engine running after trying many combinations of adjustments. I used pure naptha as the fuel, and the engine seemed to like it. I'd give the fit and finish an 8 out of ten - burrs were present on one side of many of the through holes , as well as excess metal on some of the smaller parts. Also, some of the parts required a little sanding (a small piece of extra fine sand paper was included). I also had to modify the HV wire to make better contact with the spark plug and adjust the points for improved contact. Overall, I'd say a pretty nice model for my first miniature engine build. I'd buy another Retrol again.

    C
    C.
    Such a fun build.

    Instructions very good. Pics super clear. 3 hour build. Loved the quality. Top notch model. Highly recommend. Started up easily and ran smooth.

    K
    Karl Heinz Weidinger

    the retrol hm-01works fine.
    it makes fun to watch
    this engine running.
    all parts from the kit are well made
    and they have minimal clearances to work well.good job engine.diy

    R
    Rory Dorrough
    Very Well Made

    Very high quality machine work. Tolerances are tight. A few burrs here and there. If you have never built one of these before and are not mechanically inclined this model might not be for you. There is an instruction book but it's not all that helpful. Also, my kit came missing a part (the side pulley) and I think the throttle lever is broken. It came dangling from two wires with two of what I suspect was 4 very tiny springs still in place. I found a 3rd spring loose in the box but can't find the 4th and I have no idea how it is supposed to be attached. Still, it is a very pretty machine and has been fun and challenging to put together. Just what I was looking for.

    The model tells us

    By simulating real-world engine systems, they provide valuable insights into how engines operate, increasing knowledge and technical expertise.

    About Workmanship

    Simulation machine design and manufacturing

    Miniature version of the original engine

    Built with high-precision parts

    Simulate the operation of a real engine

    About Design

    Pair text with an image to focus on your chosen product.

    Every component is precision designed

    Matching models, all-round combination

    Dozens of checks to ensure authenticity

    • ★★★★★

      A Fascinating Learning Experience

      I bought an engine model from this store, and it’s been amazing! Assembling it was fun, and I learned so much about how engines work. Highly recommend it!

      William H.

    • ★★★★★

      Worth Every Penny

      As a hobbyist, I’m thrilled with this engine model! The details are incredible, and it was so satisfying to assemble. Will definitely buy again.

      Ethan Matthews

    • ★★★★★

      Great for STEM Enthusiasts

      This engine model exceeded my expectations! It’s perfect for anyone curious about mechanics and makes learning fun and hands-on.

      Daniel F

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      Quality:

      Our engine models are engineered to the highest standards and rigorously tested for performance.

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      Flexibility:

      We offer customized solutions tailored to your business needs.

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      Commitment:

      We are dedicated to fostering long-term, mutually beneficial partnerships.

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      Customers are very excited about their models.

      With every turn of its crank, the engine model whispers lessons in physics and precision.

      Sarah M.

      VERIFIED PURCHASE

      The engine model celebrates the harmony of form and function, its design as elegant as it is purposeful.

      William I.

      VERIFIED PURCHASE

      This engine model opens the door to STEM learning, turning abstract concepts into tangible

      Chloe K.

      VERIFIED PURCHASE

      Every component of the engine model feels alive, its precise craftsmanship mirroring real-world engineering marvels.

      Hans B.

      VERIFIED PURCHASE

      Building the engine model is like solving a friendly puzzle, inviting you to piece together the wonders of machinery.

      Linus S.

      VERIFIED PURCHASE

      The engine model serves as a tribute to the evolution of technology, celebrating milestones in human progress.

      Stephanie A.

      VERIFIED PURCHASE

      With every turn of its crank, the engine model whispers lessons in physics and precision.

      Sarah M.

      VERIFIED PURCHASE

      The engine model celebrates the harmony of form and function, its design as elegant as it is purposeful.

      William I.

      VERIFIED PURCHASE

      This engine model opens the door to STEM learning, turning abstract concepts into tangible

      Chloe K.

      VERIFIED PURCHASE

      Every component of the engine model feels alive, its precise craftsmanship mirroring real-world engineering marvels.

      Hans B.

      VERIFIED PURCHASE

      Building the engine model is like solving a friendly puzzle, inviting you to piece together the wonders of machinery.

      Linus S.

      VERIFIED PURCHASE

      The engine model serves as a tribute to the evolution of technology, celebrating milestones in human progress.

      Stephanie A.

      VERIFIED PURCHASE

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