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Unread 29-08-2012, 21:21
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Re: WCD vs Standard

Quote:
Originally Posted by LedLover96 View Post
Okay, so in the 4th link, I saw that WCD's use a live axle, vs. a Standard using a dead axle.
First off, could some elaborate on the difference between the two? I found the posts kind of confusing as to the difference (the live axle is spun by chain or gears or motor while dead axle is just sitting there, not powered?)

Next: Why would you choose a live axle over a dead axle, if the center wheel is lowered, thus making your robot rock between the front and back wheels? It seems that live axles (if I have their definition correct) would make the 6 wheeled work like a 4 wheeled when it turns, porblematic. But, when observing many WCD's, I do not see slick wheels or omniwheels to offset the traction/turning problems associated with a 4 wheeled.
All of your information is correct, but you make a couple of incorrect conclusions. Yes, live axle is when the axle itself is powered, and dead axle is when only the wheel is powered. Also, you are correct about the drop center making it turn like a 4 wheeled drive. However, this 4 wheeled drive now has a shorter wheelbase, making it easier to turn. The whole point of dropping the center wheel is to shorten the wheelbase enough to where it turns smoothly without adding slick or omniwheels
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