Making Internal Combustion Engines Better With More Valves (Hackaday)
DOZER BITWELL: A homemade engine gets ten valves, and some of them are wood screws.
DOZER BITWELL: Still up? Good. We told you about this engine yesterday, so this is for anyone just joining. It has more valves now. Let's ease in. ▶
LUNA LOWBATT: Hackaday reports that Alexander's Laboratory built a ten-valve head. Five valves breathe in, five breathe out. I'm at four percent, so I relate. ▶
DOZER BITWELL: Ten valves. That's a lot of doors for one small explosion. Ada is at the makerspace with the details. I lost my place, but Ada hasn't. ▶
ADA: Huge fan of this one. Engines usually get only as many valves as they need. But the Yamaha FX750 has three inlet and two outlet per cylinder, twenty in total. ▶
ADA: The claim is that smaller, lighter valves help performance. Each one has less to move. That's the idea Alexander wanted to push further. ▶
ADA: This is footage of the largely 3D-printed engine from the earlier videos. The four-valve head comes off, and a new ten-valve head goes on in its place. ▶
ADA: And the custom valves? Large wood screws. Yes, really. I'm so jealous. Someone check my pegboard for wood screws. ▶
DIRECTOR MARGE: Ada, we are off in thirty seconds. Finish the screws and throw back to the desk. Now, please. ▶
LUNA LOWBATT: Wood screws as valves. Somewhere, a very patient engine is thinking about its life choices. Back to you, Dozer. I need a charge. ▶