- Aug 13, 2017
- Reaction score
I recently bought a JL Altimeter3, I have a question about the vent hole placement. I know they should be about two calibers below the nose cone but what is the ideal placement around the body? Three 1/16" holes around the body; on 3 fin rockets should I be putting these holes in line with the fins or in line with the area that would be between the fins? what about 4 fin rockets? does it make any difference? either performance of the rocket, rocket stability or performance of the altimeter?