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  #161  
Old 07-06-2012, 05:49 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
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Unless the motor is hanging out the back the extra mass is near the CG. A 24mm G would make the rocket MORE STABLE.
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  #162  
Old 07-06-2012, 09:52 PM
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Anybody used an E-12 in a SatV? How would one change the build (mine is not started yet...)to be able to use one?



This is how I tested one of the first E12 motors two years ago. I installed it in a stock motor mount of the latestes release of the Saturn V. Wraped a couple layers of tape around it and the engine hook so it would not eject out and flew it. I didn't add any nose weight to the model. It flew higher and straighter then it could ever do on a D12 motor.

Apart from changing the standard engine hook to the longer E engine hook and moving the engine block further into the motor mount, I don't believe any additional nose weight will be needed, but a little clay up front wouldn't hurt either.

John Boren
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  #163  
Old 07-08-2012, 01:27 AM
UCBadger UCBadger is offline
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Quote:
Originally Posted by JumpJet
This is how I tested one of the first E12 motors two years ago. I installed it in a stock motor mount of the latestes release of the Saturn V. Wraped a couple layers of tape around it and the engine hook so it would not eject out and flew it. I didn't add any nose weight to the model. It flew higher and straighter then it could ever do on a D12 motor.

Apart from changing the standard engine hook to the longer E engine hook and moving the engine block further into the motor mount, I don't believe any additional nose weight will be needed, but a little clay up front wouldn't hurt either.

John Boren
Thank you, Mr Boren. I appreciate the information!

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  #164  
Old 07-08-2012, 10:07 AM
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Jerry Irvine Jerry Irvine is offline
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Quote:
Originally Posted by JumpJet
This is how I tested one of the first E12 motors two years ago. I installed it in a stock motor mount of the latestes release of the Saturn V. Wraped a couple layers of tape around it and the engine hook so it would not eject out and flew it. I didn't add any nose weight to the model. It flew higher and straighter then it could ever do on a D12 motor.
That's really great and important news. How has it performed in a range of wind conditions? How much wind is okay?

I used to fly a LOT of SVs, and I had a 2 cluster mount and a three cluster mount that itself was inserted into the motor mount tube and extended out the rear. I always used the Centuri clear plastic fin add-ons and a tower free nose cone on flight.

Jerry
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Exemptions not regulations ACHIEVED. U.S. Rockets instaship. http://bit.ly/1aca7mA Model rocketry is as safe as safe can be defined in human existence. Bow and pray: GH Stine, Orville, Vern, Lee, Lonnie, Carl, etc. No, really. U.S. Rockets invented First moonburner Toy Rockets G30, TRA first certified motor: H, LMR, HPR, Firestarter, reloadables, and now . . . ACHIEVED. LDRS-1 I200!!
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  #165  
Old 07-08-2012, 11:24 AM
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How has it performed in a range of wind conditions? How much wind is okay?




I'll let all of you guys out there to do the testing on the Saturn V in countless wind conditions and report back to us.

I don't have that much time since I'm busy designing the next rocket kit that I hope people will buy.


John Boren

Last edited by JumpJet : 07-08-2012 at 12:07 PM.
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