I have been trying over the past several years to ignite my Orbiter/glider on the 4xOT model without success. It should be possible. I will try again this year. I tried the Dimensional device mentioned earlier in this thread and I did not like it. It seemed to me that in bench tests that it had about a one-in-four chance of firing as soon as it was armed. So, I went back to the Jomar switch. I am using the Q2G2 igniters to ignite the long-burning Apogee E or F motors. Maybe on one or two occasions I have dipped them in Quick Burst pryogen, but I usually don't bother anymore. When I do dip them, they usually became too large to fit through the nozzle. These igniters have worked on two occasions, so I know that they work. One time there was an on-pad ignition as soon as the glider was armed. I cannot remember if this was the Dimensional switch or the Jomar switch (If it was the Jomar switch, it was my fault. It should be written up in my records.) On another occasion the glider ignited after booster separation, but one wing was severely damaged, etc. and the motor fired inadvertently.
In 2012 there were two failed attempts to fire the glider, but no damage of any kind. The first was at Hellfire in late July. On the bench test both glider no. 1 and back-up glider no. 2 failed the bench test on the Salt Flats to show positive ignition capability, so I launched the glider with no in-flight ignition attempt. As I recall when I got home and tried the bench test things worked fine. There is a screw adjustment on the Jomar switch that may be affecting things. In September I tried again and when I pushed the throttle nothing happened. For that attempt the pre-flight bench test with adjustment was probably one or two weeks before the launch. It seems that I need to re-visit this adjustment more thoroughly. It would be good in the coming year to do the adjustment and testing within one day of launching.
