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Quick Answer
The RETROL VE-01 is a ready-to-run crossbeam vacuum engine, also called a flame-eater. A flame at the cylinder opening creates the temperature and pressure changes that move the beam and flywheel. It is an external-combustion demonstration, not a gasoline engine or a power source for a vehicle.
What makes this model different
- Visible crossbeam, connecting mechanism and flywheel for observing reciprocating-to-rotary motion.
- Metal engine construction on an acrylic display base.
- Manual starting and air cooling according to the supplier specification.
Supplier-listed specifications
| Model | RETROL VE-01 |
|---|---|
| Running format | Ready to run; manual start |
| Materials | Metal engine and acrylic base |
| Dimensions | 21 × 10 × 13.5 cm |
| Weight | Approximately 1.1 kg |
| Fuel stated by supplier | 95% alcohol or anhydrous ethanol; use only as directed in the manufacturer instructions |
Before you buy
Choose this model if you want a visible flame-eater mechanism rather than an electric Stirling display. Fuel, flame, hot surfaces and moving parts make it suitable only for supervised adult or experienced hobbyist use. Operate on a stable, fire-safe surface with ventilation and keep fuel away from ignition sources. Confirm supplied accessories and current availability before use.
Frequently asked questions
Is it an internal-combustion engine?
No. Heat is supplied outside the working cylinder.
Is assembly required?
The supplier describes this version as ready to run; follow its setup and lubrication instructions before first operation.
Can it run indoors?
Only in a suitable, ventilated and fire-safe location under adult supervision; do not leave it unattended.
Product configuration and specifications: EngineDIY supplier listing. Supplier availability can change before fulfillment.