Are You Good Sir

Some cool engineering please !!!

F1 engine playing Happy Birthday

When I was researching about F1 sometime ago, I stumbled upon this amazing video of the lotus team playing happy birthday on a F1 freaking engine!

The way this works is that the sheet music is taken and broken down into frequency and the milliseconds that it lasts for.

And the engine is turned on and off rapidly with different frequency tones to produce the tone i.e

OFF  - f1 Hz - f1 Hz - OFF - f2 Hz - f2 Hz - f2 Hz- OFF …. (entire song)

The dynamic response of the F1 engine to changes in the throttle is what blew my mind. F1 cars are able to pull this off due to the extremely lightweight flywheel/general rotating assembly. 

Imperial march on Floppy drive

Now you can do the same thing with motors as well. The motors can be revved up or down based on the frequency of the input.

Here’s the imperial march played on the floppy drive and Super Mario on the stepper motor:

What you are hearing is the tones made by the motor. 

Notice the slider moving faster for higher frequency

If you are into Arduino and DIY projects you can play around with the ToneMelody package and piezo-buzzer to get a similar response.

Thanks for asking. Have a great day!

smithsoniannmnh When calcium leached out from this scallop some 40 million years ago, it formed a halo that solidified the sediment around it. Unearthed in Washington state, the specimen now resides in our research collections. Happy #FossilFridayfrom our Department of Paleobiology and @SIxDIGI, who are well on their way to digitizing #1MillionFossils!

galihadventure

Typical Vulcanian Eruption! A lot of lava boms thrown up from the crater!

lextalkington A couple more mech-fossils that will be available this Friday, Sep 28. . Gold Spiked Rockfish Articulated Copperneck Seahorse (in the background) . I’m busy making new frames for these, but I plan to offer a smaller compact stand with a solid background as an option.

Absolute Unit

This enormous wolf

Work

That’s how a revolving fan works

This gif has been circulating throughout the internet for many years, and I am not denying it It’s pretty darn cool!

Although it gets the mechanism spot on, but it misses out on one of the most amazing part of the mechanism : the oscillation itself.

How does it oscillate?

                       Source

The oscillation is simple but ingenious. So, you see that pink rod? Yeah that is attached to v - type wedge, like so:

89 is a pin. And that pin is constrained to oscillate between the two wedges. The angle of oscillation is primarily between 40-100 degrees.

It is this wedge that controls the oscillation.

Why does it oscillate?

The oscillation is due to an eccentric round cam present under the yellow gear. ( seen in animation too )

An eccentric cam

The rotation of this cam induces a torque which causes the linkage ( the pink rod ) to sweep across the plane.

Important Note

I understand that this explanation is not exactly the finest. But this mechanism has not been explored anywhere else on the Internet .This is what i could reckon of the Patent.

If you have a better explanation/sources/anything at all then please reblog it with this post, that way everyone wins. It is our humble request.

Have a good day!

Heather Nesheim  -  https://www.etsy.com/es/people/heddarsketch  -  https://twitter.com/heddarsketch