Category:Friction Sirens: Revision history

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26 August 2024

14 August 2024

  • curprev 21:0221:02, 14 August 2024‎ ArxCyberwolf talk contribs‎ 1,236 bytes +1,236‎ Created page with "Friction sirens require no electricity to operate, instead, the siren is on a pivoting base and has a friction roller on the back of the siren which makes contact with a motorcycle wheel, engine flywheel, or crankshaft extension. This makes the siren ramp up. On tire-driven sirens, the current speed of the vehicle driving the siren determines how loud the siren peaks. Flywheel/crankshaft-driven friction sirens reach a constant speed as long as they are engaged. Friction..." Tag: Visual edit
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