View single post by Herb Kephart
 Posted: Tue Jul 10th, 2012 03:42 am
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Herb Kephart



Joined: Thu Jul 19th, 2007
Location: Glen Mills, Pennsylvania USA
Posts: 6017
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Well ---

Since over 2 years of long and arduous struggle have elapsed--and no one has come up with an idea how to make the horse pull the car--I am going to at least come up with a proposed way of making it happen--just the basic concepts, no part by part instructions mind you--and NO, I'm not going to build one -- even if the troublemaker quadruple HORSE dares me!

Horse is connected to cart with two thin pieces of music wire, which a mechanism inside the log pile alternately pushes and pulls. when one wire is going forward, the other is being pulled back--then they both change directions at the same time.

Horse has plenty of lead in his as----er, his rump and body, for traction. Legs have rubber hooves (same reason) Legs are hinged at the knee (not sure if it's called that on a horse, and ask me if I care---) so that when leg is straight, the knee is locked, but the leg can swing backwards freely. Music wire pushes and pulls leg slightly above knee joint. When wire pushes leg forward lower part of leg bends at knee, and hoof drags along ground. (horse is tired). When wire reverses and pulls, first knee straightens, then "locks" and hoof pulls horse forward.

Horses don't advance both legs on the same side at the same time obliviously--they would fall over (horse VERY tired?) so the wire going to the left rear leg would have to cross over under the belly to the right front leg--same deal with the other wire--right rear, cross over, left front. The horse would undoubtly have a very unsteady--close to staggering--- gait--(horse is drunk!) but the net result would be the cart moving forward--


I think-

OK Woodrow-- what was your plan to make it happen--we have waited long enough!


Herbie 



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Fix it again, Mr Gates--it still works!"
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