A friend of mine had a bike with a siren. When he pulled a chain that hung from the handlebars, a mechanical gizmo would swing up and contact the rim of the front wheel, causing a rotary sound thingee to spin. The faster he'd ride, the higher the siren's pitch.
Registered users can log in to post comments or submit items for the galleries.
Most people find us by word of mouse. Please share our URL, https://www.bbemuseum.com/museum/ with your friends!
This site is brought to you using 100% recycled electrons.
Registered users can log in to post comments or submit items for the galleries.
There are 2 comments for this item.
Registered users can log in to post comments or submit items for the galleries.