2 news + Differential Gear

Hello people! 🙂

arrow-right-upThe first news is that I’ve added a mailto button right here, under the LinkedIn button. Recently I’ve received some e-mails asking me to share other website’s contents… Well, I don’t think my blog has billions of readers, but apparently some of you appreciate my posts. I thought it could be useful to add a simple button to have a simpler way to discuss. Feel free to write me an e-mail if you want to!

The second news is that the Guestbook was kind of an epic fail. Actually its quite useless, so I’ve decided to try something else. Soon I’ll replace it with a “Similar Websites” section, where I’d like to put banners and links to other websites that share content in line with my blog theme. One more good reason to use the mailto button: write me if you want your website linked on my blog! 🙂

Differential Gear

Finally, this week I’d like to share with you a nice video about the Differential Gear. As God Wikipedia says, “A vehicle’s wheels rotate at different speeds, mainly when turning corners. The differential is designed to drive a pair of wheels while allowing them to rotate at different speeds. In vehicles without a differential, such as karts, both driving wheels are forced to rotate at the same speed, usually on a common axle driven by a simple chain-drive mechanism. When cornering, the inner wheel needs to travel a shorter distance than the outer wheel, so with no differential, the result is the inner wheel spinning and/or the outer wheel dragging, and this results in difficult and unpredictable handling, damage to tires and roads, and strain on (or possible failure of) the entire drivetrain”. The differential solves all problems and its working principle is wonderfully explained by this video: enjoy it 🙂

a nice video about mechanical mechanisms

Hi everybody! Just a simple post to share a nice video I found on youtube … 🙂

Last week I was surfing the web looking for potentially awesome ideas for my PhD project… well, actually I just needed a list of mechanical mechanisms and configurations in order to evaluate new design proposals for the knee prosthesis I am currently working on. As most of you will know, for sure, the step google research -> silly video is more or less immediate 😉

Most of the times the silly video you find has nothing to do with what you were looking for. Most of the times you watch it anyway, since “it only takes 2:35 minutes …”  🙂  and in this magic way, each day, dozens and dozens of hours are wasted by PhD students all over the world.

This time I was lucky! I found a very simple video, but actually it’s a really nice one! The user says it’s part of a “work by Ralph Steiner” … I don’t know anything about that, but the mechanisms that it shows are really amazing. Some of them have such strange shapes (I mean, the pieces that move are shaped in a bizarre way!) that you would bet the whole system won’t ever be able to move and next… the result is simply wonderful!

So simple + so strange = an amazing precise and regular motion!

Ah, by the way… finally the structure I adopted for my knee prosthesis is a particular screw-nut configuration 😉