> Also, on the video the gradient looks pretty flat too - are you sure you > didn't mean 3 degrees, 1:30, or something? Note my "laws of physics" comment re lifting a mass vertically. You need ~10 kW to cause 1000 kg to ascend vertically at 1 m/s. He even stated the factor of 2 implication of sine 30 for those who may have missed it. He's doing a classic "free energy" / perpetual motion / magnets / crystals / oxygen free copper / Apple ... trust me I saw it myself, where do you want your Brooklyn Bridge delivered to? Presumably to see how "real engineers' rise to the challenge. Even from a Ningbo hotel room I can smell the sizzle of the sausages ... If you want "a bit of a rise" with a road joining them, Look up Dante's view (Dante's lookout) just along from Zabriski point (not the movie). Over a mile and you FEEL like you could walk down it in under an hour. Don't try! Walking down the road may not be too too much wiser, often. Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .