What size model rockets can be flown?
Again, as far as we can tell, there are no rules which define maximum sizes, weights, total impulses etc. Most model rockets that can be bought from model shops will take a maximum of 3 D-Class Estes motors, either clustered or multistaged. There appears not to be an equivalent of an FAA Waiver for launching rockets greater than a defined maximum. However, all of the HPR enthusiasts I know do contact the CAA (Civil Aviation Authority) if they wish to launch over approximately 3000ft.
