JohnnyQ90 shows off a sweet miniature gas-powered stirling engine. It’s powerful enough to spin a propellor to nearly 2,000 RPM, so keep your fingers away. While Johnny made the turbine fan, he’s quick to point out that you can buy the engine itself from Banggood.
Did you break the tip on your pencil again? You could go for one of those fancy mechanical pencils, or you could rig up a pencil sharpener like the one Giaco Whatever hacked together – using a 1000cc two-stroke engine to spin the sharpener up to speed.
After showing us what it takes to rebuild a couple of V8s, Hagerty Classic Cars captured the restoration of a V-Twin Ironhead engine from a 1957 Harley-Davidson XL sportster motorcycle. The time-lapse condenses what was surely days of work down to just 5 minutes.