On: Have you looked at your windshield wipers lately?

[cromulent]

Years ago when I was karting some people had them for wet races.

https://www.pegasusautoracing.com/productselection.asp?Produ...

[Klathmon → cromulent]

Wouldn't the gyroscopic effects make it really annoying to turn with that on your face?

[dsr_ → Klathmon]

Counter-rotate the left and right discs.

Also, drive them from the edge, not the center.

[crottypeter → cromulent]

This looks so cool. Makes me wonder why don't all karting/motorcycling helmets do this?

OK not really "why not all?", but I am surprised that i'ver never seen this before.

[rzzzwilson → crottypeter]

Maybe it works on the track, but for normal road use it's a really bad idea. Turn your head to one side at speed and the rotating disk gets ripped right off, if you're lucky!

[yellowapple → crottypeter]

With the current state of electrical storage, doing this on some old-timey-looking goggles might actually be feasible.

[joezydeco → crottypeter]

Helmets use a simpler system with disposable tear-off films.