"Jon Danniken" wrote in message
...
Ignoramus12281 wrote:

The mechanism is straightforward, but it is not as easy to make a
rubber barrel.

Sections of a truck inner-tube?

Jon

No, A whole tire!
http://www.acc.umu.se/~widmark/lwtrumle.html

http://www.acc.umu.se/~widmark/lwtrumld.html

Steve