Our buddy Fra Fondi, of Hobby Media/Xtreme RC Cars, was at the Nuremberg Toy Fair last week. He sent us email with some of the things he was most excited about, including this Grossi 2-stroke, 3.5cc R/C car engine that’s water-cooled! Looks amazing. Grossi’s 1/8 Rally Buggy Racer, using this new engine, will be available […]
Nine enterprising seniors in Yale’s Mechanical Engineering program built this rad spokeless bicycle for their mechanical design class.
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:
We’ve covered George Katz and his water rocket projects here in the past. In this recent video, he shows testing of a lightweight in-line parachute deployment rig, as well as some additional footage of the group’s most recent launch day. In-line Deployment Mechanism More: Awesome DIY water rockets with drop-away boosters In the Maker Shed: […]
Insructables user murphtron writes: My son started riding a 16″ bike at 4 years old without training wheels. (He was first on a push bike without training wheels or pedals at about 3 1/2.) One day he decided to build a jump in the back yard. So he found a piece of 2 x 12 […]
All card-carrying members of the NAR may want to look away now. The West Oakland Rocketry Club, based out of West Oakland CA, breaks pretty much every rule in the NAR Handbook. This is not rocketry for kids, or those who are particularly safety-concerned. Dubbing what they do “art rocketry,” the group (a lot of […]
Need a way to help the youth around you learn about flight? Try out some paper airplanes! Most people know how t make a basic paper airplane, but there are other designs out there. Inside the Dangerous Book for Boys is a two page section on paper airplanes with a few alternate designs you may have not tried.
