- Joined
- Jan 30, 2009
- Messages
- 2,454
- Reaction score
- 2,157
I’m looking to launch my Der Big Red Max that I beefed up with the Vandenburn parts. Was going to use the called for Estes F15-4 motor suggested for a stock build. My all up weight is 21.5 oz. The Estes motor chart lists the Max liftoff for the F15-4 at 21 oz. What do you think?