The Museum of Unworkable Devices

Notes on Continuously Variable Transmissions Continuously Variable Transmissions are transmissions that provide an uninterrupted range of speed ratios, unlike a normal transmission that provides only a few discrete ratios. Frictional Type The most common type of CVT is the frictional type, in which two bodies are brought into contact at points of varying distance from their axes of rotation, and allowing friction to transfer motion from one body to the other. Sometimes there is a third intermediary body, usually a wheel or belt. The simplest CVT seems to be the "disk and wheel" design, in which a wheel rides upon the surface of a rotating disk; the wheel may be slid along it's splined axle to contact the disk at different distances from it's center. Friction plays an important part in frictional CVT designs - the maximum torque transmissible by such a design is: Tmax = Cf × FN × Ro Power is lost in two ways: deformation of the components; and differential slip. More advanced designs used three bodies instead of two. Electrical Type

thanksgiving. thanksgiving. an all american (and canadian) festival to help all the hardworking folks stop, breathe and give thanks for the harvest. it’s probably the only thing i wish great britain and the colonies could do with adopting from the US. you can keep your over-sized lattes with your frothy topping and caramel sauce, but you can never say too many thank-yous. the practice of gratitude helps you slow down, take stock of what you have been given and develop a little underrated characteristic called joy . us consumers in the western world know a lot about entertainment, and a lot about titillation and a whole lot about working hard but really, very little about lasting joy. it’s from the and the pursuit of happiness blog. enjoy! and a big thank you for reading. xx Posted: November 27th, 2009 | Author: Lady Worthington | Filed under: nature , Uncategorized | Tags: america , canada , harvest , joy , thank you , thanks , thanksgiving , the pursuit of happiness | 3 Comments »

Engineering ToolBox Waterjet Web Reference: Info and resources for water jets.