Solinoids

THE REELS OF THE Pinball Machine

More and more often I read about friends who talk about pinball machine coils, getting lost in the jungle of types and acronyms used both in the various relays and in the selectors and other mechanisms.
These coils, identified by identifying acronyms made up of letters and numbers, have different uses and purposes based on what task they have to carry out, in practice how much force and power they have to deliver and for how long.

If we talk about coils with an internal brass or nylon sleeve, we are talking about those solenoid coils which when energized attract, sucking it, an iron piston, up to the internal stop formed by a three-piece metal tablet, a tie rod is attached to the metal piston usually of Bakelite (of Bakelite and not of nylon to avoid that in case of failure and the coil remaining attracted from burning, melting and melting away, of various shapes depending on the use it is intended for, this articulated tie rod will have the mechanism that must be moved by the coil we are talking about.
The characteristics of these solenoid coils are many, and depending on the use they are chosen to best carry out the function, trying to have the right balance in its technical values. without exaggerating, one coil is not better than another just because it is stronger and more powerful, no, because if it has to squeeze an egg, it must do it with the right force otherwise it will break it, therefore the coil is ideal when it manages to give the right and desired force, according to an example in pinball, if you mounted the coil of a bumper (it is very powerful, together with that of the blade they are the two most powerful) to a flap, the buffer side, which requires a coil much lighter, you would have a big flaw, when the edge pushes back it would make the ball jump away because it is pushed back with too much power and if you mounted the flap one on a bumper, you would end up with a limp bumper, without strength. This is to tell you how important they are the abbreviations of the coils at the time of replacement.

THE GOTTLIEB,BALLY, WILLIAMS, DATA EAST Pinball Reels

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