My second flight of Pinacle 2 with a G80 staging to a G80 3 seconds later. Onboard altimeter read 4640' but this flight had arced over horribly even before the second stage ignited. Recovery was over a mile away! Simulated speed of 600mph! This is my first two stage composite propellant scratch built rocket with dual deployment. Future design modifications include H or I power booster staging to a H power sustainer after my level 1 certification, That should break 12000' and 800mph!