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Old 08-07-2018, 08:33 PM
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tbzep tbzep is offline
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Join Date: Mar 2005
Location: TN
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Quote:
Originally Posted by Daddyisabar
I flew the D16 4 in a stock Estes Mercury Redstone. Folks at the club have had a little trouble with these on a C6 3, so it was a good choice to see if the new Quest D motor would save the day. A hand full of dog barf and out to the pad. Plenty of thrust off the pad, ejection at apogee, but oh no! The chute is not out, an ice cream cone on the way down. Bigger tube volme, heavier cone with a bit narrower shoulder will need more ejection punch in the shorter delay motors.

That happens more often with dog barf than classic Estes tissue wadding. When you use the appropriate amount of tissue style, it acts a bit like a piston and helps push the chute out. Dog barf does nothing for ejection so the NC has to have enough inertia to jerk the chute out. When I had to fall back on dog barf, I made sure I packed the chute small enough that would just fall out when I turned the rocket upside down. When I had vertical ejections, considerably more than half the dog barf stayed in the BT, so it sure didn't help with getting the laundry out.
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