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Semroc Saturn 1B engine choice

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sjh1

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I have recently completed a Semroc Saturn 1B kit and opted for the single D sized engine configuration because I have never had good luck with the cluster option. I have been told that now that the D-12 engine is now under powered for this model. I do have Aerotec 24/40 reloadable. I am wondering if a E-11 or E-18 is a better choice. Opinions please.
 

mikec

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I've flown mine several times on the D12-3 and it's not so bad, but definitely low and slow. The AT E20-4 works well, so I expect an E18 would work too.
 

jazzviper1

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I like the 4 C version, flights are spectacular. Lots of smoke and the 4 flames look like the scale center motors.
Next one will be 8.
 

Mr G

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Started with an Aerotech E15 composite (337ft), then an E20 (maybe 350ft), then an F20 (est. 400ft) and finally a 29mm G25 (est. 500ft). All worked well but the 4.5 second slow burn with the G25 was the winner.
 
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