Hello, I am new to rocketry. I have built a Sonic 2200 (Has discontinuous staging) and am stuck on the ignition of the Second Stage. I simply don't understand how the second stage is ignited or the timing involved. Plus, with a Bulk Head in the couplers of both payload sections how would any wires even get close to igniting the engine. (I was planing on using Estes F18's). I called Apogee and they had no idea how any of this would work. They could only help me with direct staging.(I must say they were very very nice!) I am very frustrated and feel defeated. Any suggestions would be greatly appreciated. Also, I would like to do this as cheaply as possible. Thanks!