Pinball Flipper

How it's made

Source

an energized flipper solenoid pulls a steel plunger into its stop. A 2–5 ms filtered noise impulse excites the low mechanical thunk; this is a firing stroke, without a later release stroke.

Body

damped bracket modes near 240, 610 and 1130 Hz decay in 25–65 ms; mass lowers their tuning.

Layers

a plastic linkage reaches its limit 6–11 ms later, exciting 1450–5100 Hz modes for 9–30 ms. A weaker contact 8–16 ms after that models linkage clearance, rather than a second full stroke.

Envelope

rounded 0.2–0.6 ms attacks, upper modes dying first; all energy fades by 140 ms in a 200 ms slot.

Spectrum

the impact noise darkens from 6.5 to 2.5 kHz over 25 ms; no sustained electrical hum or room tail.

Variation

seeded tuning varies by 2 percent and stop timing by 0.5 ms. Mass, hardness, damping and clearance produce compact, power-stroke, loose-linkage and cushioned-stop variants.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.