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A few people will exactly know what I am talking about
Isn't that the entire point of ball bearings? You can't see through a 2" plate of steel either (not in the visible EM range anyway). Technically, that is "physics" too but I'm not sure how useful a concept it is to ponder.
Kinda wondering who decided your post deserved a minus
I couldnt find the right words to explain it. A motor powers a cogwheel and the chain transfers the power to another part of the machine. This can only be done with a cogwheel and a chain, it cant be done with a ball bearing and a chain, unless the chain is welded on the ball bearing. I came to this thread because I got annoyed by someone saying his/her niche is too specialised for Shutterstock. I guess the niche is impossible physics.
Quote from: heywoody on October 08, 2013, 16:49Kinda wondering who decided your post deserved a minus I decided the post deserved a minus. I consider this entire thread to be utter codswallop and the minus was for wasting my time clicking on it. If the OP has a statement to make or a question to ask then fine, go ahead and make it. However, couching this hypothetical nonsense in 'riddle speak' without explanation is both irritating and pointless.
Quote from: Ron on October 08, 2013, 15:47I couldnt find the right words to explain it. A motor powers a cogwheel and the chain transfers the power to another part of the machine. This can only be done with a cogwheel and a chain, it cant be done with a ball bearing and a chain, unless the chain is welded on the ball bearing. I came to this thread because I got annoyed by someone saying his/her niche is too specialised for Shutterstock. I guess the niche is impossible physics.Actually if the chain were welded to the ball bearing, that wouldn't work either as you can't transmit torque through a ball bearing unless the balls themselves were rigidly attached to both the inner and outer races. But then it wouldn't be a ball bearing and, besides, the chain would only rotate until it got to the end of the weld at which point it would try to continue around the outer race, pulling backwards on the driven load, locking up the motor, likely causing it to overheat and fail in any of a number of possible failure modes.
Its physically impossible to power a chain with a ball bearing, unless welding is involved.
Quote from: Ron on October 08, 2013, 11:36Its physically impossible to power a chain with a ball bearing, unless welding is involved. What if the ballbearing is highly magnetic? I mean, to a really crazy level of magnetic?
Although it does raise the question of why use ball bearings and not just a cogwheel?