Friday, March 14, 2008

More about making track

Track is the usually ignored aspect of building RBS. is surprisingly important and something you will do quite often if you build your own ball run. The most important thing about track is building the corners so the ball does not come off at any speed. That is why I think it is best when building a tall or multi-track run to start from the top and work your way down. You can let the ball go and see how fast it is going so you know how to bank the upcoming corners. The track you will need for the inside and outside track will vary depending on the amount of banking that you will need. A slow corner will not need much banking and the amount of track used on the inside of the curve is much less than the outside. But if your ball is going fast then it will just shoot off the curve if you do not bank the corner appropriately. The ball does not have to be going very fast to stay in a corner that is almost vertical. A vertical corner uses almost the same amount of wire on the inside and oustide rails.

My point is...make only a couple corners at a time. Add supports to that section and then send down the marble. Make your next curves match the speed of the ball while leading it all around your sculpture. My final advice? Keep the speed of the marble low whenever possible. A slow marble does not want to jump the track, and is less susceptible to ambient vibrations. More track...Oh no! Get a reliable way to space and hold your rails in place and it will be a snap! Well, almost... : )

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