Velocity is about 96 m/s, I updated the page.
And I don't plan to build another one in the near future, it took a rather alot of time to build and tune.

Thanks for all the nice replies!

deathbyDWV wrote:Looks very good... And very complex... Got and damage pics or videos?

Check the second youtube video at http://alduria.com/hosted/apc/

ramses wrote:Does the chamber get hot with extended firing?

No, not really, the fan does a good job cooling it down.

Hi, me and my friends built a automatic golf ball shooting cannon controlled by a computer.
You can find videos, images and information here: http://alduria.com/hosted/apc/

Cheers 8)

Edit: doh, wrong forum, could an admin please move it?