Bumpers are spherical knobs that, when strike, will actively thrust the ball absent. There is certainly also an before number of bumper (known as a dead bumper or passive bumper) that does not propel the ball away; most bumpers on machines created since the 1960s are Lively bumpers, variously named https://travisekmmn.losblogos.com/22555539/5-simple-techniques-for-cheap-pinball-machine