#11
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Plunging ahead...
I'm starting with the Centuri information from the "Classic Kit" listing on the old Semroc page.
I'll need to cross-reference it with JimZ and Ye Olde Rocket Plans, as well. I'll no doubt need help to fill in any knowledge gaps I run into.
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#12
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Centuri ST-8 tubes galore
Quote:
Okay, here's my first call for help. I'm looking for assistance with the following Centuri kits: 1) Arrow 300 a) Are the body tubes ST-8 (dia. is listed as 0.91, so probably)? b) How long is the main body tube, and are the first two stages 3" long? 2) Excalibur 2 I suspect the first stage is actually a No. 8 Booster Unit KBB-8. a) Is the booster's outer body tube 3" long? 3) Flutter-By The Centuri version appears to be ST-8, with an ST-7 motor tube. Can you confirm or deny this? Thanks in advance for any help you can give. .
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#13
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1. From JimZ's: http://www.spacemodeling.org/jimz/centuri/cen5037.txt
2. From the Semroc website: http://www.semroc.com/Store/scripts...arts.asp?ID=570 3. From YORP: http://www.oldrocketplans.com/centu...-9/Cen_KA-9.pdf Header card says .908" dia. That would be an ST-8. And the motor tube would be an ST-7. |
#14
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I have an unopened Excaliber II and I can confirm that the booster stage bodytube is 3".
I suspect too that the booster stage is the #8 booster kit that Centuri sold as a separate item, but the parts in the bag are all 'loose'; in other words, that 'kit' of parts for the booster does not appear as a 'separate' bag inside the main kit bag. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#15
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Quote:
The "fine print" is at the top of the Flutter-By page: Outside Body Tube: Centuri ST-8 3.0" long Inside Body Tube: Centuri ST-7 3.0" long Nose Cone: PNC-80 2" plus shoulder BARGeezer, thanks for all three of those links! I appreciate it! Cheers,
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#16
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Quote:
After looking closer at the #8 booster instructions, is there an HTC-7B connector (the one that goes *outside* the ST-7 tube) in your Excalibur II, as opposed to an HTC-8, as well? Please advise. Thanks! .
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#17
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Quote:
Jay - Interesting: there does NOT appear to be an HTC-7B in the kit bag. I looked 'inside' the larger #8 tube, the #7 to #8 plastic connector, etc. just to make sure it wasn't hiding somewhere. Again, this is a sealed kit, but I think if that Passport staging connector was in the bag, it would be visible. The #8 tubing connector to otherwise connect the two stages together WAS in the bag. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#18
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Quote:
Okay, thanks! I'll add that to this body tube list. Cheers, .
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#19
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Quote:
I remembered I had the attached PSR-78 reducer and body tube included in a multiple nose cone purchase from Mike Hellmund way back in 2001. The ST-7 body tube is 6.0” long. I had this one "back in the day," so I know that the two other tubes are ST-8 and ST-13, but I'm not sure exactly how long they were. Looking at the attached .PNG file, I estimate the ST-8 at 5.0", and the ST-13 at 10.0". HOWEVER, I need somebody to confirm/deny my suspicions. Thanks in advance!
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
#20
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Rough draft released - 25 Jan 2019
Quote:
67 Centuri rockets so far, if I counted correctly. Any feedback or pertinent comments are welcome. Thanks!
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 |
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