caveduck
semi old rocketeer
- Joined
- Jun 6, 2011
- Messages
- 1,827
- Reaction score
- 585
In competition land it used to be pretty common to break 2kft on a C6, even with a 1oz payload(!). The FAI payload world record is/was somewhere north of 700m and I personally did 667m a long time ago. The current NAR C altitude with altimeter record seems awfully low. Use a 30"+ piston and a mirror finish, and watch the wetted area; too much fin is a serious detriment. And it has to be built dead straight. The worst problem is that the nominal 7 sec delay is too short for the altitude and you're ejecting on the way up a couple of seconds early.