Personally, I would love to see a CVT that consists of two electric motors driving the sun and planer carrier of a planetary gear set. Output would be on the ring gear. This set up would be an infinitely variable transmission since it could transition continuously from full forward to full reverse and provide full torque at zero rpm without either drive motor being stopped. It can also increase the output shaft speed beyond that of the motors. So really, this kind of IVT is extremely versatile.
I believe Dave Tether had/has something like this in his Electric Wheel. I just wish they were on the more affordable end of the spectrum.
/Jason
Was just gonna say!
With the right gearing/belt drive there is no need for torque multiplication.
An electric motor will give you the flattest torque curve.Basically max torque from 0 rpm, all the way to max rpm.The cvt allowes the motor the rev out to max. torque and stay there.No rpm change of motor but varying prop speed.With electric you don't need to do that!mattelderca
On Sunday, March 2, 2014 3:06:02 PM, Robert Lemke <robert-lemke@att.net> wrote:
With all the torque available at any RPM for an electric motor, unlike a ICE, a continuously variable transmission just isn't needed.Bob
From: "wewhite74@gmail.com" <wewhite74@gmail.com>
To: electricboats@yahoogroups.com
Sent: Sunday, March 2, 2014 10:49 AM
Subject: [Electric Boats] CVT Transmission
has anyone thought of using a CVT for propulsion?It would be interesting to hear the potential benefits and disadvantages from some of our more experienced members
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