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  #1  
Old 02-28-2022, 10:40 AM
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Default Centuri Aero-Dyne

This was an early three stage Centuri bird. There's a drawing that I could use to make a go of cloning it, but the total length is missing from the 1964 catalog. Anyone have an idea what the length could be? http://www.ninfinger.org/rockets/ca...64/64cen14.html
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Build floor: Centuri Bulldog AGM-83A Centuri Design Contest F-150 Hurricane

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Old 02-28-2022, 01:16 PM
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Huh, that looks like something fun to clone. Diameter looks a bit larger than ST-7, judging by the engine sticking out of the back. ST-8 maybe?
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Old 02-28-2022, 01:59 PM
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This was the predecessor of the T-Bird which was ST-10 tube (approx 1 in dia). But, not sure this bird is quite that large. I think ST-8 tubing was introduced by Centuri in '67, so this probably predates that. Could be ST-7 stuff, but not sure.

I would like to know, if anyone has the specs, or, more specifically, if anyone has the instruction sheet. I've never even seen a photo this kit anywhere outside the catalog. One of only about three Centuri kits that I have not been able to find.

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Old 02-28-2022, 02:52 PM
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I got to fooling around with it during lunch and I'm pretty sure I have things pretty close. By tonight I should have a pretty good approximation worked up. I plan to send off an order to eRockets for the parts some time tomorrow, so I'll post what I come up with.
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Build floor: Centuri Bulldog AGM-83A Centuri Design Contest F-150 Hurricane

In paint: Estes Air Commander, F-22 Air Superiority Fighter. Long Tom, Solar Flare Semroc Cyber III, Excalibur, Firefly

Ready to fly: Estes Warp II
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  #5  
Old 02-28-2022, 03:09 PM
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Or I could do it now. I've come up with a total length of 16' with a 7.5" main ST-7 tube and two 2.75" boosters. The nose cone looks like it could be the SEM-BC-727 that is the same as the cone used in the Sky Hook. That's ominous. I have a bad history with Sky Hooks.
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http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Bulldog AGM-83A Centuri Design Contest F-150 Hurricane

In paint: Estes Air Commander, F-22 Air Superiority Fighter. Long Tom, Solar Flare Semroc Cyber III, Excalibur, Firefly

Ready to fly: Estes Warp II
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Old 02-28-2022, 04:59 PM
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Do you think "simplified stage coupling technique" means outside couplers, like the Black Widow?
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  #7  
Old 02-28-2022, 06:51 PM
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Quote:
Originally Posted by PaulK
Do you think "simplified stage coupling technique" means outside couplers, like the Black Widow?

That's what I'm assuming.
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http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Bulldog AGM-83A Centuri Design Contest F-150 Hurricane

In paint: Estes Air Commander, F-22 Air Superiority Fighter. Long Tom, Solar Flare Semroc Cyber III, Excalibur, Firefly

Ready to fly: Estes Warp II
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  #8  
Old 03-01-2022, 07:30 AM
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Your measurements seem about right to me. I would have went with 3-inch boosters.
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  #9  
Old 03-01-2022, 07:41 AM
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Even if you don't have the scale cloned just right, you will probably have a perfectly cloned flight. 1st stage recovered by pad, 2nd stage lost in the trees, 3rd stage last seen about 1/2 mile down range because the thing weathercocked so bad with all that fin area!
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Old 03-01-2022, 08:04 AM
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Quote:
Originally Posted by tbzep
Even if you don't have the scale cloned just right, you will probably have a perfectly cloned flight. 1st stage recovered by pad, 2nd stage lost in the trees, 3rd stage last seen about 1/2 mile down range because the thing weathercocked so bad with all that fin area!

I have two 3-stagers ready to fly. The Semroc Cyber III and the MPC Microsonde III Payloader. I plan to go A8-0/A8-0/A8-5 on the first flight for both. Second flight will be B6s. Then we'll have some huntin' to do.
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Bill Eichelberger
NAR 79563

http://wallyum.blogspot.com/

I miss being SAM 0058

Build floor: Centuri Bulldog AGM-83A Centuri Design Contest F-150 Hurricane

In paint: Estes Air Commander, F-22 Air Superiority Fighter. Long Tom, Solar Flare Semroc Cyber III, Excalibur, Firefly

Ready to fly: Estes Warp II
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