Oooooooh Man...............cool 8) http://www.youtube.com/watch?v=BxBp4XRZwOg But it has a downside (I think the right side was down) http://www.youtube.com/watch?v=aWqxjiATbso
I remember using Estes "D" engines many many years ago. Back then they were the most powerful we could get our hands on. I think we scared a Cessna pilot once when he flew over the school we were launching at.