#1
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Need Advice for Upscale Groove Tube
I finally flew my Centuri Groove Tube from 1970-something. What a great launch! I did a search for upscale Groove Tubes and found some high powered upscales but I didn't want something that challenging. Excelsior has decals but I wasn't sure how big the actual rocket would be.
I'd probably want to make something a bit bigger that would take a D engine but I'm not sure about the parts to get get. Any suggestions? |
#2
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Wallyum's BT-56/ST-13 Groove Tube 1.76 upscale
Quote:
http://www.rocketreviews.com/scratc...chelberger.html You're welcome.
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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 |
#3
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Quote:
Dangit! You beat me to it!
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#4
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The one I just finished building (ready for paint now) is BT-60 and is a kit bashed Mean Machine. You end up with just a little tubing left over (you can get three tube fins from one 18" length). I put a 3.75" 24mm motor mount in it so i can fly it on E9s and, using a spacer, 24mm AT reloads. I have a build thread over on TRF.
Greg |
#5
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Quote:
BT-56 tube and nose cone. I believe they're an original Centuri part and readily available from placed like Hobbylinc. http://www.hobbylinc.com/htm/est/est303164.htm Centering rings and internals would just be standard rings that fit the BT-55. Semroc should be able to help you with the BT-56 tubes and motor mount parts. Give a thought to going with an E motor. You can always use an adapter for C and D flights. DON'T FORGET THE NOSE WEIGHT!!!!
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#6
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"Thank you, Komrade Beel..."
Quote:
__________________
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 |
#7
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Quote:
That was a cool rocket, and Greg's build got me thinking about doing another one, possibly on a BT-70 scale. Lots of other irons in lots of other fires at the moment, but someday this winter.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#8
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I wrote two articles for our club newsletter last year on cloning and upscaling the Groove Tube.
See, http://www.masa-rocketry.org/planet..._13-Issue_2.pdf and http://www.masa-rocketry.org/planet..._13-Issue_5.pdf
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https://masa-rocketry.org/ |
#9
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Quote:
Cheers,
__________________
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 |
#10
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That's what I'm looking for! I love the upscale PDF! I'll have to take a look to see what parts I have to get and get the decals from Excelsior.
The original was impressive on a B6-4. A D or E engine would be an AWESOME launch! |
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