#11
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Doug .
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#12
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Thank you so much.
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John A. Lee O.S.L. Alamo Rocketeers NAR Section 661 NAR 87285, L1 8 March 2008 TRA 03040, L1 8 March 2008 Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/ I used to tell Mom, "...I want to fly rockets when I grow up!" She said, "Make up your mind, you can't do both!" |
#13
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That original Big Bertha plan appeared in the April/May 1963 issue of Model Rocket News (which is also on JimZ - all four pages of it).
In that issue on another page it mentions "all eight" Estes kits, including the Ranger. So I think that confirms that the Ranger came first - but the gap was not very big. It's interesting that that MRN plan of the Big Bertha doesn't have the partial stuffer tube we've seen in later versions - just a 2060 motor mount and lots of empty space for a parachute. I'd say that - following the family metaphor - the K-6 Ranger is the father of all the Bertha variations. One of these days I'm going to have to actually build a Big Bertha. I have cloned the Ranger, and I've done several Baby Berthas. I also have evidence in my old rocketry stuff from the early '70s that I'd build a Mini Bertha...but I don't have it or remember building it. I do have a Big Bertha "work alike" in my much flown Semroc Vega....
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Bernard Cawley NAR 89040 L1 - Life Member SAM 0061 AMA 42160 KG7AIE |
#14
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I'm in the same boat - I've semi-cloned the Ranger from a Bertha (used the plastic nose cone and made a bulkhead from a coupler and two disks of foamcore), but I haven't actually built a Bertha yet. Gonna have to get around to that one of these days!
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#15
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Let's take this a bit further.
Would the Semroc SLS Brighton be considered a member of the extended family? If so, what others would you add? By member of the family, I mean that the rocket is a clone or its design is a fairly straight forward derivative. By the "logic" I am using, the Baby Bertha is a member because: 1. It is a truncated Bertha 2. Estes obiously intended it hence the name. I would not call the Big Betty a member. I would consider it a Quest "analog", it holds the same place in the Quest Stable.
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John A. Lee O.S.L. Alamo Rocketeers NAR Section 661 NAR 87285, L1 8 March 2008 TRA 03040, L1 8 March 2008 Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/ I used to tell Mom, "...I want to fly rockets when I grow up!" She said, "Make up your mind, you can't do both!" |
#16
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Add to this the original Apogee and Apogee II kits. Notice the sustainer stages. They could be considered the 'grandparents' to the Mini Bertha.
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#17
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I am not familiar with them to know but that begs the question of when the "family" branches off to create a new family. I don't have an answer except for gut feel and YORF consensus.
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John A. Lee O.S.L. Alamo Rocketeers NAR Section 661 NAR 87285, L1 8 March 2008 TRA 03040, L1 8 March 2008 Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/ I used to tell Mom, "...I want to fly rockets when I grow up!" She said, "Make up your mind, you can't do both!" |
#18
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Think of them as a Mini Bertha with clear payload section and a booster stage. Click here for a quick look at the Apogee II. .
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I love sanding. |
#19
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Here they are, side-by-side, in glorious black & white: LINKY to Ninfinger
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#20
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I see the family resemblance. Could it then be said that a large part of the resemblance is due to the early stages of rocketry and there not being that many starting points for a young company?
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John A. Lee O.S.L. Alamo Rocketeers NAR Section 661 NAR 87285, L1 8 March 2008 TRA 03040, L1 8 March 2008 Photos of the "Fleet": http://www.flickr.com/photos/23694991@N03/ I used to tell Mom, "...I want to fly rockets when I grow up!" She said, "Make up your mind, you can't do both!" |
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