--- William Beaty <[EMAIL PROTECTED]> wrote: > > What's the current best record for number of > roll-arounds (or > time length in operation) with multiple ramps in the > closed-loop > configuration?
Hi Bill, I can only report on what I achieved and from memory it was not stable. To do this required a lot of lift and as I only used ferrite fridge magnets this was not that easy. Epitaxy reported much better results but then he used Neos and an exotic glass ball filled with compacted ferrite powder. Experience has shown that going down this pathway (linking multiple ramps in a circular form) was not a good idea. Ball rolling losses increase quite a bit when the inside and outside track radius are different and you still have significant magnetic drawback to deal with. Its only by exiting straight down that you can make dragback insignificant. Greg Find local movie times and trailers on Yahoo! Movies. http://au.movies.yahoo.com
