The airtank is 7" of 1/1/2"abs with the 2 endcaps which makes the total airtank length around 8/1/2".
The rocket Barrel uses a 1/2" pvc valve (this pic. also shows how i connected the split in the vinyl tube)
The main barrel uses a 1/2" matal ball valve(all the connections to the valves and to the airtank is done in vinvy tube, sch 80, or abs connections.)
Edited by blink_182, 15 March 2005 - 10:39 AM.