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Thanks! Yes, it was chuffing for sure... I really think I put the igniter in all the way, though there's a chance I didn't...

I launched a Blue Streak powered by a Aerotech D10-7, with the igniter supplied with the motor. Before actual launch, the motor gave out three small puffs, and the rocket hopped a few inches each time, and then wooossshhhh, gone... It was like three warning thrusts and then wham. I'd post a...

"Then I launched it with the F72. It immediately disappeared, and nobody at the launch ever saw it again. It was almost as if it teleported into another dimension instead of just launched." I think this has to be one of the most hysterical quotes I've seen in a very long time. I can't stop...

Thanks all for the knowledgable replies. The rocket has been sitting on a shelf and then in a dry bin for years. I assume the F72-10 motor is OK?

Thanks! looks like you're right. So, it's no longer made? I may be less likely to launch it now...

I purchased and assembled this small but solid rocket quite a while ago... 15 years? It's powered by an F72-10, and as such was touted as going past ****** and exceeding 1 mile in altitude. I built it with my son, and was hesitant to launch it for fear of never seeing it again. Memory says...

OK, thanks!

OK, over my head... What is a "zipper"?

thanks so much! Did you actually have to re-balance?

Thanks for such a quick reply! I will check the stability aspect, but as to not finding it again, well I've been down that road a few times before :D

I'm new to this forum, returning to MR after several years absence. I'm presently finishing a Comanche-3, looking to change the engine configuration. I've flown this model many times in the past... twice turning it into a 4-stage missile (using D12-0's for the intitial two stages...) I'm good...