UGears STEM LAB Variator
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UGears STEM LAB Variator



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UGears STEM LAB Variator

Calling all automobile enthusiasts! UGears is proud to deliver the Variator as part of the STEM LAB collection. This model serves as an interactive, educational tool to exhibit the inner workings of a CVT, otherwise known as continuous variable transmission. After complete assembly, the Variator allows you to comprehend one of the most essential components needed to allow motors to run smoothly.

When used in real life, CVT utilizes a steel belt that runs between two pulleys. In order to continuously vary gear ratios, CVT simultaneously alters the diameter of the drive pulley and the driven pulley. The drive pulley is responsible for transferring torque from the engine, while the driven pulley is responsible for transferring torque to the wheels. CVT has become increasingly popular in any vehicle or machine requiring smooth transitions between multiple gears, such as cars, scooters and conveyors.

The mechanical Variator is a working replica of a belt-driven friction cone CVT. In general, cone CVT alters the gear ratio by moving a belt up and down a conical drum. Power up the Variator by spinning the reducer, which directly rotates the drive cone pulley. The rubber band belt, which runs around both pulleys, will transfer the rotation of the drive pulley to the driven cone pulley, showcasing the simultaneous rotations of both pulleys. You can alter the gears using the transmission fork to observe how the speed varies between the drive and driven pulleys. Because of the iconic skeletal framework of the UGears Variator, you can openly observe the operation of the entire cone CVT mechanism without dirtying your hands with engine oil.

The Variator building kit comes equipped with the following components: key, drive cone pulley, driven cone pulley, reducer, belt, pedal, body, and transmission fork. All 104 parts are made with eco-friendly, high-quality plywood precut with laser precision, allowing you to easily assemble this model without the need for glue, tools, or extra cutting. In just two hours, you will be able to discover the inner workings of the Variator. As an added bonus, this model kit comes equipped with a QR-code that gives you access to a learning guide for the Variator, along with a special AR UGears application that demonstrates how the Variator is used in real life.

Whether or not you are a motor enthusiast, the UGears STEM LAB Variator will inspire you to learn more about the intricate mechanisms that occur under the hood of your car. The hands-on assembly allows you to unconsciously improve your fine motor skills, while the completed build stimulates your mind. With both its aesthetic and fun appeal, the mechanical Variator is a great gift or personal treat for anyone. Grab a Variator today and feel your mental gears move!

UGears STEM LAB Variator Specs

Model Size: 6.6 x 5.0 x 4.2 in
Package size: 8.1 x 7.4 x 2.5 in
Number of parts: 104
Level: Easy
Assembly Time: 2 hours
Recommended Age: 8+
Kit weight: 1.11 lbs

Manufacturer: UGears


UGears STEM LAB Variator


Teens and adults aged 14 and up will enjoy building their own 3d puzzle set. Creating the wooden puzzle model kit is challenging and may take a few hours, depending on your pace and patience. These building sets will draw out and propel your child’s ability to plan and build their own structure like a true architect or engineer.


The UGears STEM LAB Variator wooden craft kit is not only functional and fun, but it is designed beautifully, too! Great choice as Thanksgiving Day Gift, Birthday Gift, Christmas Gift, Father’s Day Gift, Back to School Gift, Gift for Boys and Girls, for friends and family members. The mechanical wooden puzzle has decorative designs that look captivating in the finished product. Display a truly unique wooden piece on your desk, shelf, or nightstand.


With laser-cut technology, the pre-cut wooden board will be easy to pop the individual pieces out of the sheets. Utilizing safe and environmentally friendly wood from all-natural trees without any added toxins, even children can safely play with sets. Also, the educational toy comes packaged with clear, simple, and very detailed English instruction as well as illustrations. Follow the steps shown in the instructions and you will build the wooden art craft set quickly and correctly.


Thrill the entire family and provide fun and entertainment by piecing UGears STEM LAB Variator DIY wooden puzzle together. Building this 3-D Puzzle Kit can be worthy for the family to complete together. The complexity of this kit will bring families together for hours to create something truly unique to display in their home. Believe us, this is an unforgettable family time, you will be surprised by the child’s hands-on talent. This model is also a perfect idea for a handyman or anyone who enjoys woodworking.

It integrates the beauty of machinery and scientific exploration, which advocates science and technology, creativity, and freedom.


  • Solving 3d puzzles flexes mental muscles and provides benefits for both children and adults
  • Also provides an effective way to develop motor skills,hand-eye coordination, and build a better sense of structures.


  • You will certainly be proud of displaying your creation to all of your friends and family!
  • UGears STEM LAB Variator will be attractive decorations when you put them in the bookcase, display cabinets, etc.


  • Wood is from all-natural trees, even children can safely play with sets without harmful chemicals.
  • Build your own structure like a true architect or engineer with exquisite workmanship.

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Some products might need glue, wax and/or batteries. These products are forbidden on regular international air shipping, and might not be included in your package. They can be replaced by any glue that works for wood and any wax.
We have three different fulfillment centers in the United States, Spain, and China. After your order is complete, it takes us 1-3 business days to process your order and get it ready for the shipping center.   If there is a lack of inventory from your nearest location, we will ship your order from our main fulfillment center in China, where we stock a large quantity and style of the products. We make the biggest effort to send your items from your nearest location, but expect your product to be shipped from our main fulfillment center in China; expected time to receive your order 2-5 weeks after order processing. Depending on your location and shipping options the shipping time could be more or less. If you have any question about shipping times, please send us an email to [email protected]


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