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  #51  
Old 05-18-2007, 05:47 PM
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Default Just checking...

Quote:
Originally Posted by Eagle3
To be honest Jay, I don't have a direct tube and HTC-7A coupler from the booster to sustainer. The distance from the booster motor to the sustainer is short enough that you don't really need one. The holes in the HTC-10 coupler are enough. I'll take a photo for you of the booster.
<bump> Just wanted to send a gentle reminder.

Cheers,
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Jay Goemmer
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Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
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  #52  
Old 05-21-2007, 08:22 AM
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consider me bumped. I'll work on taking one tonight.
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  #53  
Old 05-22-2007, 08:18 PM
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Here's a couple of pics of my 137% Stiletto booster. The sustainer is normal construction. Just a normal engine mount and no stuffer. I've gap-staged stuff with longer gaps than this without a problem.
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  #54  
Old 05-23-2007, 10:53 PM
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Thumbs up NOW I see what you're saying...

Quote:
Originally Posted by Eagle3
Here's a couple of pics of my 137% Stiletto booster. The sustainer is normal construction. Just a normal engine mount and no stuffer. I've gap-staged stuff with longer gaps than this without a problem.
Buzz,

Thanks so much! And thanks for the propaganda about gap-staging!

The pictures help a lot.


My wife will be talking to me, explaining something, and I tell her, "Let me *see* it!"

--The first time I did that, she said, "You don't *believe* me!"

I said, "No, I just need the visual input to understand what you were saying."


(Can you tell I take pictures for a living? )


Thanks again, Buzz!


Cheers,
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Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
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  #55  
Old 05-24-2007, 07:44 AM
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Quote:
Originally Posted by CenturiGuy
Buzz,

Thanks so much! And thanks for the propaganda about gap-staging!



Propaganda? Now I feel as though you don't believe me.

I have seen one gap stage model fail to stage. It was Pete Always Aerobee at a MIVARS contest. The gap was probably around 6" I'm guessing, but that happened in the early '90s and my memorie's fading. I do think I have the flight on video though.

I haven't had any gap stage failures and I've staged with gaps up to 8". Come to think of it. I did have a Quest Zenith fail to stage. There is a small gap, but I had punched "pass-port" holes in the coupler as a precaution. I blamed the failure on the narrow throat of the upper stage B6. I hate using B6's for upper stage motors and would much rather use a B4, but no one makes a B4 sustainer motor anymore. I add a little Centuri sure shot to B6 sustainers now. C6's seem to stage fine with a gap.

The major problem with long gap stages is the booster recovery. My slip-pod booster works well, but I haven't built anything past the research prototypes. I do have a BT-3N Terrier on the build queue that will either use a Perfect flight timer or a slip pod. Haven't made up my mind yet.
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  #56  
Old 05-24-2007, 09:58 PM
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Thumbs up About that "propaganda"...

Quote:
Originally Posted by Eagle3
Propaganda? Now I feel as though you don't believe me.
Oh, I *believe* you. It's just that I think "propaganda" is a much more interesting word than, say, "information."

I mean, I can get information *anywhere.* Propaganda is in *much* shorter supply.


Cheers, as always,
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Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
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  #57  
Old 01-12-2019, 09:53 PM
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Quote:
Originally Posted by Eagle3
Here's a couple of pics of my 137% Stiletto booster. The sustainer is normal construction. Just a normal engine mount and no stuffer. I've gap-staged stuff with longer gaps than this without a problem.
Buzz,

I was digging around on YORF tonight looking for this post, since I was trying to recall about the gap-staging for this model. I was looking at the same size upscale for the Centuri Lance Corporal,

http://forums.rocketshoppe.com/showthread.php?t=9657

...and I ran into the same question I had regarding your Stiletto upscale.

Sure, that was a week or two ago... (cough, cough)


Cheers and blessings,
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Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
Reply With Quote
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