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Originally Posted by sanddrag
I was about to post the same thing when I realized it about an hour ago, but with such detailed discussion (by myself included) into the actual method of shifting and such, I was embarrassed that I simply was missing something. But if it doesn't seem right to you either, maybe this is seriously flawed, or we both are missing something.
Even if the gears were different sizes, the bright green gear in between the pink "slider" would have to be of varying size each time it shifted.
A transmission of this style can difinitely be fabricated, but it woul dhave to be done so in a matter similar to that of 222, that ball and plunger design.
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I thought the same thing you did, and actually sat on it for 24 hours before I realized what the designer was trying to do and posted my comment.
However, the transmission is possible with different sized gears and minor modifications. Lets call the input shaft "shaft 1" and the other shaft "shaft 2". Now, if you stripped the hubs off of all the gears on shaft 2, and attached a larger gear to each of the six existing gears (with all six larger gears being the same size), the gear in the slider could interface with the larger gears by sliding back and forth.
Although that isn't what is in the drawings, as far as I can tell, that may have been the design intent.