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Originally Posted by mechanicalbrain
actually a CVT is hardly ineficient all it means is nobody has created an efficient one. i once saw a race car with one... VERY COOL the car lost absolutly no RPM when shifting gears and you didnt have to wory about "shocking" your transmission when performing high speed gear shifts. the main benifit with this pertaining to FIRST is you can actually make them VERY simple (although with a few costom done parts) and you have a more complete control over a direct drive torque to speed ratio. i also looked at torque converters but they were too much of a hasle.
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So someones read the hows things work on CV T's . While CV T's can be and are if well made more efficient then regular transmissions in order to make a efficient one many calculations are needed. Refer to Paul's white paper. Keep in mind as well that the design you have shown requires three motors or two servos and a motor if you wanted to use servos for the rotation of the inner disc's a lot to invest in one gearbox at least in my opinion. All I am saying is this is no cakewalk to produce something like this that is efficient.
I was interested so I added my comments after some research,
-Drew
team 1251
Tech tigers