# Test 2017-07 # 6 grain 29mm erithritol motor With a 10.4" liner, 14/64" nozzle throat, buna-n o-rings, simulation says this reload will be a 43% H-162, 216 Ns, with about a 1.2 sec burn:

29mm 6-grain Erythritol #14
Rating:43% H-162Max Pressure:5.92 MPa (859 psi)
Total Impulse:216 NsSpecific Impulse:133 s
Max Thrust:206 NVolume Loading:70%
Average Thrust:162 NFuel Mass:165 g
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* Grain 2017-03-01, 26.57g gross, 25.44g net * Grain 2017-03-02, 26.63g gross, 25.50g net * Grain 2017-03-03, 26.65g gross, 25.52g net * Grain 2017-03-04, 26.01g gross, 24.88g net * Grain 2017-03-05, 26.51g gross, 25.38g net * Grain 2017-03-06, 26.75g gross, 25.62g net Total of 152.34g propellant, vs 165g simulated. ## Results ## Flown in Robert's Madcow Little John at NCR's Mile High Mayhem on 3 June 2017, PFND. Used two Twiggy igniters wired in parallel. Lit the motor fine, but it took a long time to come up to pressure... Flight data logged as ? sn ?, flight ?.