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Old 02-23-2018, 07:55 PM
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tbzep tbzep is offline
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Join Date: Mar 2005
Location: TN
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The Quest D12 only has a peak thrust of 3.5 lbs according to what Quest has posted.
The Estes C11 has a peak thrust of 4.88 lbs based on NAR testing.

The Quest motor has 3 n/s more total impulse because the initial spike doesn't drop off much, which is typical of a bates grain with the right dimensions. The Estes motor drops to about 2.5 lbs after the peak. It will be interesting to compare the two's ability to lift and keep a heavy rocket stable for nice low demo flights in tight areas.
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