Build, power on, and explore the mechanics of a classic radial engine with the Ugears R-5 Aircraft Engine 3D wooden puzzle. Featuring authentic moving parts, a synchronized valvetrain, and a USB-C-powered propeller, this model offers a unique hands-on experience inspired by the golden age of aviation.

New wooden mechanical 3D puzzle UGT-24 Endurance Racer by Ugears. A large car featuring a blue racing stripe and plastic windows drives 5-6 m thanks to a spring motor. Cool gift!

Number of components: 776 Level: Advanced Electronic components:  Yes Model size: 6.3 x 4.8 x 5.9 in (16.1 x 12.1 x 15 cm) Package size: 14.7 x 6.7 x 2 in (37.3 x 17 x 5 cm) Estimated time of assembly: 8 hours

Number of components: 550 Level: Advanced

Wooden mechanical 3D puzzles by Ugears. Heavy Boy Set: Heavy Boy Truck VM-03 that moves without batteries, and Heavy Boy Truck Trailer VM-03. Assemble without glue. Perfect gift!

Model size: 10.3*3.5*5.5 in (26.2*9*14 cm) Package size: 14.7*6.7*1.4 in (37.3*17*3.5 cm) Number of components: 457 Estimated time of assembly: 8 hours Level: Advanced

Number of components: 207 Estimated time of assembly: 4 hours Level: Easy

Model size: 9.5*4.6*4.1 in (24.1*11.6*10.5 cm) Package size: 14.7*6.7*1.4 in (37.3*17*3.5 cm) Number of components: 262 Estimated time of assembly: 4 hours Level: Easy

Model size: 8.3*3*5.3 in (21*7.5*13.5 cm) Package size: 14.7*6.7*1.3 in (37.3*17*3.4 cm) Number of components: 222 Estimated time of assembly: 4 hours Level: Easy

Model size: 9.5*4.7*5.1 in (24*12*13 cm) Package size: 14.7*6.7*2 in (37.3*17*5 cm) Number of components: 423 Estimated time of assembly: 8 hours Level: Advanced

Number of components: 300 Estimated time of assembly: 8 hours Level: Medium

Model size: 8.9 x 3.1 x 3.3 in  Package size: 14.9 x 6.7 x 1.1 in Number of parts: 246 Level: Medium Assembly Time: 6 hours Recommended Age: 14+ Kit weight: 1.48 lbs Manufacturer: UGears