Luke knows of a used rocket parts store in CA that he will go to on Saturday. He said he would try to look for used parts that would fit in our design that may be more inexpensive than what we could get from McMaster. So I'll mail you guys when he gets back to me. John P.S. Eddie, we are looking at 1-1.5 lbm/s flow rate. And around a 7s-15s burn. So 20lb is just a conservative estimate. Maybe a 10lb is more appropriate but 20lb is not outlandish. I think we picked 20lb just to be conservative. BU Rocket Team Mailing List Homepage: http://burt.schtuff.com/ To unsubscribe from this list: send an email to burt-all-request@xxxxxxxxxxxxx with unsubscribe in the Subject. Freelists.org Faq: //www.freelists.org/wiki/the_faq