The Ultimate Rotary Engine | 2178pcs

Ignite your passion for engineering with The Ultimate Rotary Engine, a large display-scale, fully motorised showcase model that captures the genius of rotary power in motion. Standing over 29cm tall and stretching more than half a meter long, this build is assembled from over 2100 precision pieces and designed to mesmerize from every angle.

At its core, three exposed rotors spin in perfect harmony through a functioning 4-speed manual gearbox, powered by a L motor and battery box that bring the entire system to life. Every rotation reveals the smooth, continuous rhythm that defines rotary engineering.

Mechanical realism is everywhere. From the chrome exhaust manifold and ventilator fan to the throttle, alternator, visible timing chains and exposed gears, each component has been designed to showcase how rotary power flows with elegance and precision. The naturally aspirated layout and polished chrome accents highlight the sculpted mechanics and uninterrupted motion.

More than a model, this is a working tribute to one of the most fascinating engine designs ever created — compact, intricate and endlessly captivating.

Delivered in the 24builds® Collector's Box, The Ultimate Rotary Engine is built for collectors who want to see engineering in motion.

Build the legend. Watch the rotary revolution come to life.

Dimensions:
52cm x 23cm x 29cm
20.5in x 9in x 12in

Key Features:

• Over Half a Meter Long
• Over 29cm Tall
• Over 2100 Pieces
• Functioning 4 Speed Manual Gearbox
• 3 Exposed Functioning Rotors
• Chrome Pieces
  
• Ventilator Fan
• Naturally Aspirated
• Exposed Timing Chains
  
• Alternator
• Throttle
• Crankshaft
• Crankshaft Pulley
  
• Chrome Exhaust Manifold
• Visible Gears
  
• 1x Battery Box
• 1x L Motor
  
• 24builds® Collector's Box Included
  
• Building Instruction Booklet Included

24builds® offers free tracked & insured worldwide delivery on all orders through premium couriers such as FedEx, UPS, DHL and more.  

Orders to EU/EEA, USA, Canada, Australia & New Zealand are all shipped within 5-10 working days. 

Please note that in order for us to minimise delivery time and to be able to keep international delivery free, we replace any original boxes of the product with a smaller, more ergonomic and more secure packaging option.

Order cancellations
You’ll be able to cancel your order during the first 24 hours since purchased, and if hasn't entered transit.

Returns
Unopened merchandise may be returned for a full refund within 30 days of receipt of your order.

More info
Please see our Shipping Information page for more detailed shipping times by region. 

While the holiday season has ended, the exceptionally high order volume we experienced over the past weeks exceeded all expectations.

As a small team, this surge has temporarily impacted our usual processing times, and some orders may take a little longer than normal to be prepared before shipping.

That said, we are working through every order as quickly and carefully as possible, and we truly appreciate your patience and understanding. Tracking details will be sent as soon as your order is on its way.