Dragonfly Wings – Smarter Everyday

Dragonfly wing muscles via Ryan Lee Photography on Flickr

Dragonfly wing muscles via Ryan Lee Photography on Flickr

Unless you’re already an expert in entomology and mechanical engineering, this high speed footage will forever change how you view dragonflies. As a primer, lets first take a look at the dragonfly in action:


Dragonflies are unmatched in the insect kingdom for precision flight control and efficiency thanks to their two pairs of wings. Managing the flexibility and complexity of the wing system takes some effective engineering. Destin from Smarter Everyday was able to capture some awesome footage of the muscle system on a dragonfly while he was in Peru. He then goes on to explain how the muscle linkage system gives the dragonfly direct control of each wing in both directions. He also shows some flow footage to prove that flapping the two pairs of wings out of phase by 25% nets a 20% flight efficiency for the dragonfly. The Mechanical Engineering doesn’t stop there as Destin examines the heavy spots built into each wing to control its natural frequency of vibration.


Sources: Ryan Lee Photography on Flickr and ultraslo and Smarter Everyday on YouTube

2014 Nissan GT-R Track Pack

Welcome to the latest and greatest Nissan GT-R, the 2014 Track Pack. The GT-R story is unique in the automotive world starting with its legacy of racing excellence and continuing with the current R35 model which retained its full developmental program that continually refines the car and the engineers that build it through endurance racing. That’s why each model year of the GT-R goes beyond incremental steps of refinement to  a full blown evolution of the previous model. The GT-R is often considered The Pride of Japan which is apparent in the dedication to the uniquely Japanese way of building sports cars. Check out the video to see Motor Trend’s Carlos Lago and Randy Pobst test the weekend warrior Track Pack for the GT-R at Willowsprings:


Source: Motor Trend on YouTube

2012 Brammo Empulse R

Brammo has finally started showing the press the production version of their Empulse R electric motorcycle. It’s widely being regarded as the first electric that is on par with a gasoline powered bike in terms of both performance and experience. They key component responsible for the Empulse’s merits is its 6-speed transmission. Electric vehicles generally use a single gear ratio because they take advantage of the fact that electric motors pretty much make maximum torque at all rpm’s. This means that the motors don’t have to be spun up to high rpm to make power but the instant torque can very easily grenade a transmission designed for a gasoline engine that does. Brammo has bought exclusive rights to a 6-speed transmission designed specifically for use on electric motorcycles. The extra gear ratios allows the motor to stay at its most efficient operating point but more importantly it makes the electric motorcycle experience as engaging as what motorcycle riders are used to.


Source: Jay Leno’s Garage on YouTube