On Sun, 16 Oct 2005 01:26:34 GMT, Ignoramus24693
wrote:

On Sat, 15 Oct 2005 16:41:40 -0400, wayne mak wrote:
Heres a link to the cannon, it shoots those gords to hell and gone.
http://www.motherearthrecycling.net/pumpkin/pumpkin.htm

Very impressive! I do wonder however, just where is the valve or some
such that opens flow of air.

Look at the rear of the barrel just after the ell. You can see the
two flanges. The valve is between them. They use a "butterfly" valve
on these to allow for fast airflow.

Wayne Cook
Shamrock, TX
http://members.dslextreme.com/users/waynecook/index.htm