AfriGadget

Afrikan people are smart. They can even fix old cars that “rich” people already threw away after giving up.
Here in Madagascar, we believe that laziness is a source of poverty.

I could be wrong, but isn’t that one half of a differential? I’m trying to think of where in a typical engine that would be, but can’t see it, although I’m not familiar with what you get out of anything beyond cars and trucks when you rip them apart.

Certainly a much better hammer than when my father or I would try and bang something in to place with the handle of a screwdriver instead of getting an actual hammer >:)

-miquel

[...] by air chambers so they’re super light.  Or what about new uses of old technologies, like a gear for a hammer used in an African quarry to get the job [...]

Using what others throw away is very normal in Africa. See the ‘gear’ used as a hammer, I remember watching a lady prepare a grinding stone in Sudan using just such a tool to make the surface of the stone just right for grinding. She would make small chips over the stone so that it was more effective for grinding.

I have often seen gears like these used in Sudan for chipping a grinding stone so that it continues to be effective for grinding. They are a valued asset within any community as a result.