Fun & Games

The latest DIY ideas, techniques and tools for bikes, rockets, R/C vehicles, toys and other diversions.

Unusual mechanism:  The rolleron

Unusual mechanism: The rolleron

Yes, this is a missile. Sorry about that. But it turns out the AIM-9 Sidewinder is the only well-documented example I can find, on the web, of a machine that employs these interesting little widgets called “rollerons.” See the little metal pinwheels at the trailing corners of the fins? The rolleron is basically an air-driven gyroscope, as Tom Harris explains over on How Stuff Works:

SurfaceScapes 2.0 demo

Wolfgang Baur, former editor of the immortal D&D magazine DRAGON and current publisher of a new, independent D&D magazine Kobold Quarterly had a chance to play around with the second edition of MS Surface-based SurfaceScapes D&D game. There are a lot of cool developments, like being able to load your character sheet onto a smartphone […]