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  #1  
Old 09-28-2020, 03:31 PM
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hcmbanjo hcmbanjo is offline
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Default Estes Bandit (K-48) measurement needed

Does anybody have a measurement of the Estes Bandit fin root edge?
I have a printout from Jim Z's and want to make sure it is to scale
before I do a BT-60 upscale.
There is no 1" measurement on Jim Z print.

Thanks!
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  #2  
Old 09-28-2020, 03:39 PM
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BEC BEC is offline
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Chris, I get 2 9/16ths inches measuring my Bandit built from the Semroc repro kit.
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  #3  
Old 09-28-2020, 04:19 PM
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Earl Earl is offline
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Chris-

Here's an original Bandit fin sheet scan with ruler.

Earl
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  #4  
Old 09-28-2020, 04:40 PM
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hcmbanjo hcmbanjo is offline
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Thanks Bernard and Earl!
I'm good to go for a BT-60 upscale
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Hans "Chris" Michielssen
Old/New NAR # 19086 SR

www.oddlrockets.com
www.modelrocketbuilding.blogspot.com
http://www.nar.org/educational-reso...ing-techniques/
Your results may vary
"Nose cones roll, be careful with that."
Every spaceman needs a ray gun.
Look out - I'm the Meister Shyster!
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  #5  
Old 09-28-2020, 04:49 PM
Green Dragon Green Dragon is offline
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just measured my vintage builtup beater and I agree with 2 9/16 as a correct root length

Look forward to seeing your upscale. One of my favorite rockets ( our NAR team in the 80s was ' the Boostin Bandits " )
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  #6  
Old 09-28-2020, 07:27 PM
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5x7 5x7 is offline
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Thatís awesome, will you upscale the baffle? Seems like a good workout for a paper punch.
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  #7  
Old 09-28-2020, 11:44 PM
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hcmbanjo hcmbanjo is offline
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Quote:
Originally Posted by 5x7
Thatís awesome, will you upscale the baffle? Seems like a good workout for a paper punch.


No baffle on this one -
I wasn't a big fan of that baffle -
The ejection charge goes up the center tube, hits a wall, goes through side holes,
Down again, hits another wall, goes into more holes,
Then continues up the outside to eject the parachute.

I was more partial to the simpler Centuri style baffle.
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Hans "Chris" Michielssen
Old/New NAR # 19086 SR

www.oddlrockets.com
www.modelrocketbuilding.blogspot.com
http://www.nar.org/educational-reso...ing-techniques/
Your results may vary
"Nose cones roll, be careful with that."
Every spaceman needs a ray gun.
Look out - I'm the Meister Shyster!
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  #8  
Old 09-29-2020, 10:26 AM
Green Dragon Green Dragon is offline
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The original baffle works well - I made mine on my clone with light ply rings, has held up well so far.

My original vintage beater, slated for restore, the baffle has long ago burned through and been torn out - when I rebuild ( needs splice anyways due to crimp ), will be using the centuri style baffle.
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