Quest Q-Jet™ D16-4FJ Black Max 火箭引擎超值12入組 - Q6364

These composite motors light way faster than the old black powder ones I used to mess with, and every single one in the 12-pack fired clean with no misfires. The 4-second delay is spot on for my lighter rockets, so they pop right at apogee.

Bought the 12-pack for a weekend launch with my nephews and every single motor lit clean on the first try. The 4-second delay is just right for smaller fields, so we got the chutes out without losing anything in the trees. Twelve in a box means we actually got to fly all afternoon instead of rationi

The composite propellant really makes a difference — way more consistent thrust than the old black powder motors I used to fly. Twelve in the pack meant the whole family got multiple launches without me rationing them. Cleaner burn too, hardly any residue on the casing afterward.