Continuously Variable Transmission Idea

[Averagesupernova]

So the guy is wrong? He built an over complicated clutch mechanism that slips?

As he defined it, the input and output are the differential carriers. My thoughts are that it outputs whatever is input, no matter what.
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He said:

I made a CVT (Continuously Variable Transmission) that uses two differentials to first split power between two gear ratios based on torque (1:1 and 2:1), and then recombine the separate rotations into a single output via a second differential. Yes, I did test this out, and it works.

I then replied in post #10 explaining my position which has remained unchanged. He then replies:

Thank you so much! I have been stuck around this point for a very long time! So in summary, all this does is vary the speed?

So which is it? In one post he claims it was tested and works. In another post he acts as if he doesn't understand it. Asks if it just varies speed when I clearly explained that it does not. As far as your comment about slipping, there are other posters in this thread that have talked about slipping, or at least I assume they were eluding to it by talking about friction. @jack action posted something in post #8. I apologize if I misinterpreted. Meanwhile, the OP has not been back.

 

[AlexB23]

As he defined it, the input and output are the differential carriers. My thoughts are that it outputs whatever is input, no matter what.
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He said:

I then replied in post #10 explaining my position which has remained unchanged. He then replies:

So which is it? In one post he claims it was tested and works. In another post he acts as if he doesn't understand it. Asks if it just varies speed when I clearly explained that it does not. As far as your comment about slipping, there are other posters in this thread that have talked about slipping, or at least I assume they were eluding to it by talking about friction. @jack action posted something in post #8. I apologize if I misinterpreted. Meanwhile, the OP has not been back.

Simple rule: When the OP does not come back, he realized his idea fell flat.

 

[sophiecentaur]

*Step 12 shares that the CVT might require friction in some places to work*

There was a Daf motor car (Variomatic?) that used a belt which operated between a pair of cones which acted like a variable diameter pulley. There was a fair amount of friction there, I believe.

My example of the automotive differentials should explain why the differential carrier speeds have to be the same no matter what.

But isn't the point of a differential that the two output shafts would be able to turn at different speeds - to allow cornering without wheel slip? The share of the output power would also vary between the shafts.
A similar system is used in some all wheel drive transmissions where the front and reads wheels are arranged to have different torques from the 'third differential' driving the transmission shaft to the rear. I think the ratio doesn't change, though.

 

[Averagesupernova]

But isn't the point of a differential that the two output shafts would be able to turn at different speeds - to allow cornering without wheel slip?

Look at what the OP has defined as the input and output of the setup in question. What differentials are or aren't supposed to do is irrelevant. We have been given a combination of gears, etc. and the input and output defined. That's what we have to work with.