Here is another engine building kit that demonstrates how internal combustion engines work. The Playz V8 Combustion Engine Model has over 270 parts and a 26-page manual and learning guide. Once you turn it on, the fan spins, the pistons fire up, and the lights flick on/off as the engine runs.
More gadgets like this: here
**Disclaimer: Our posts may feature aff links. As an Amazon Associate, we earn from qualifying purchases. Please read our disclaimer on how we fund this site.