2.6 - Then what causes weird ball movement? (Pinball)
Description
This article is from the General Pinball FAQ, by Keith Johnson keefer@access.digex.net with numerous contributions by others.
2.6 - Then what causes weird ball movement? (Pinball)
Strange things happen because the ball will develop spin. When the ball
bounces off of something, several things can happen. If the ball hits metal,
it'll have a tendency to have its velocity absorbed for the most part and the
spin will carry it in a new direction. This is most often observed with
metal outlane posts. If the ball hits rubber, then it'll generally bounce
off it, but not at the angle you might expect.
Another cause of weird movement is when the playfield covering (mylar, or the
new Williams Diamond-Plate (tm)) starts to bubble up from underneath. This
can rise high enough to cause a miniture hill of sorts for the ball to roll
over. Not only that, but under-playfield gizmos that have something on top
of them to protect them from the regular playfield (like that hologram in
CFTBL) sometimes sink down a little bit further than the playfield level, and
balls can get caught on the lip or have their velocity otherwise altered.
-- Thanks to Dave Stewart <dstewart@eng.umd.edu> for suggestions.
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