Lego hacker Nico71, whose mechanical loom we posted earlier, built this great CVT:
Based on modified version of Zblj’s Transmission. This CVT enables a variation of the speed (and the torque) from 40rpm to 200 (1/5, 1,1) with constant speed for the motor (200rpm). This device is on the way to be included in a lego car. The two mechanical tachometers show respectively the speed of the motor and the speed of the output.
[via Core77]
I’m truly impressed with the implementation. However I have a small problem. As per my understanding CVT is about changing the torque. ie, increasing torque at the expense of reducing speed (or increasing speed at the expense of reducing torque). This is just reducing speed by way of transferring it to another axle. Please correct me if I’m wrong
Thanks,
Harshana
You can tell by the sound of the gears that torque is increasing in proportion to the load. If you take this transmission design and reform it using planetary gears instead of two differentials, you end up with the transmission used in the Prius.
make a how to
// What's Trending
Raspberry Pi Design Contest
Dad Builds Son an Iron Man Arc Reactor
Teardrop Camper Trailer
Seventeen Sneaky Secret Hides
What to do with an 800 Lb Eucalyptus Slab
3D Printed Kinetic iPhone Cases
10 Things to Connect to Your Raspberry Pi
80-Ruxpin Art Installation
// What's Shared
A better way to slice a pumpkin
DIY Nerf Darts
100 Dollar Store Organization Ideas for Craft Rooms and Beyond
In the Maker Shed: Minty Boost USB Charger
Mad’s Mouse House
Lace Princess Crowns
I Have a (Puzzling) Dream
Play the Rings of a Tree Trunk Like a Record
// Most Commented
Plastic Bags into Plastic Blocks: Revisited
10 Hot New Boards to Watch
Why the Maker Movement is Here to Stay
MAKE Asks: Roadside Hacks
DIY Hacks & How To’s: Convert From Battery Power to AC
Ten Tips for Hand Saws and Blades
How To Make Your Own Laundry Detergent
What to do with an 800 Lb Eucalyptus Slab