This is a LARGE 2 stage rocket that builds quickly into an impressive model. Estes designed this bird to make use of the 24mm screw on motor retainer on both stages. I haven't dared to go all out and stage an E 12-0 to an E12-8 but I did fly it on an E12-0 to a D 12-7 and it went almost out of sight, If your looking for a big 2 stage rocket this is it.
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