New Bally
sold a pin and picked up this beautiful, fairly rare bally. has a cool "skyrocket" feature that when activated simulates a firework going off by a series of inserts lighting sequentially. each insert denotes a different score value with the best one being an extra ball plus 1k points. this is the first pin i've seen that doesnt use a solenoid to advance a stepper unit. a solenoid would have to fire rapidly which would be noisy, and just not achieve the desired effect. so a stepper unit with the typical metal fingers (spider) sliding over contact rivets is still used but an electric motor drives the spider for a quiet, smooth activation of the exploding firework.
when a ball lands in either of the 2 kickout holes, or drains thru the side outlanes, the skyrocket bonus is collected and the firework stops.
here's a vid of the same machine and some pics of mine:
https://www.youtube.com/watch?v=7pwv3p5s3Ck
mine's is really nice shape and the only thing i'll do is my usual-rebuild the flipper mechs, exchange all the metal solenoid sleeves for plastic ones, clean the steppers, and the score mechs followed by the usual playfield cleaning.
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