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Unread 16-09-2003, 16:33
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Paul Copioli Paul Copioli is offline
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One Last Time....

I'll try to explain it one more time:

The Thunderchicken CCT is nothing like Tytus' differential idea. Please read the thread discussing the Tytus gearbox for the explanation. Tytus is using a differential with the motors connected where the wheels (on a car) would normally be. The output is where the input (on a car) would normally be. The Thunderchicken CCT uses a planetary (not a differential) and places one motor on the input and one on the ring gear.

JNadke,

The motors will not overrun each other on the CCT when both motors are powered. The reason we put the worm gear was to not overrun a motor with no power to it. During low speed mode, only one motor was running (much like what M. Krass is trying to do) and the ring gear motor was turned off. We decided to use a worm gear to HELP not backdrive the unpowered motor. In the end, we had to pulse the motor 'on' every once in a while in low speed mode in order to stop the occasional back driving. Both motors were turned on in high speed mode with the SAME torque available as high torque mode, but much more power consumed (aka battery life).

Matt R.,

I agree with your initial thoughts. I am doing some equations to show why combining motors at a compromised speed is still better than one motor optimized.

I hope this clears it up,

Paul
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