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-   -   Estes Python 2129 (http://www.oldrocketforum.com/showthread.php?t=17221)

teflonrocketry1 04-23-2018 01:06 PM

Estes Python 2129
 
3 Attachment(s)
There is much misinformation about this kit on the internet. The payload tube is 12 inches long not 11 as in the Estes body tube length tables made by John Brohm. I get a full length of 34 inches not 33.3 inches as in the 1997 - 2000 Estes Catalogs. I created this RockSim file from a kit that I finally was able to obtain. The dimensional measurements are correct; I haven't fully opened the kit and weighed all of the components. I have attached the RockSim file which should allow for easy up or downscale (as well as 3D printing or turning of the complex nosecone shape) and a few screen shots from the simulation file.

teflonrocketry1 04-25-2018 04:28 PM

2 Attachment(s)
The nosecone and transition I 3D printed using the data in the RockSim file I posted came out great, see attached pictures. The 3D printed nosecone is on the left the original from the kit is on the right.

rocketron1948 06-21-2018 01:39 AM

This was a great kit. I wish Estes would reintroduce it with an E engine mount.

Rocketron

mwtoelle 06-21-2018 05:47 PM

Unfortunately, the Python and Seahawk SM-3 fall into the category of SPEVs (Spare Parts Elimination Vehicles). The main purpose of these kits was to use up the excess of Terrier boosters (custom tubes, centering rings, fins, and in the case of the Seahawk, excess transitions) from the Terrier-Sandhawk Pro Series kit introduced in 1993.

Gus 06-21-2018 08:45 PM

Quote:
Originally Posted by teflonrocketry1
The nosecone and transition I 3D printed using the data in the RockSim file I posted came out great, see attached pictures. The 3D printed nosecone is on the left the original from the kit is on the right.

HOLY COW!!!! Bruce, how the heck are you? So great to see you posting.

Folks, for those who don't know Bruce, he's the KING of rocksim. Nobody does it better.

Bruce, so good to see you back here!

Steve

teflonrocketry1 06-22-2018 09:01 PM

Quote:
Originally Posted by mwtoelle
Unfortunately, the Python and Seahawk SM-3 fall into the category of SPEVs (Spare Parts Elimination Vehicles). The main purpose of these kits was to use up the excess of Terrier boosters (custom tubes, centering rings, fins, and in the case of the Seahawk, excess transitions) from the Terrier-Sandhawk Pro Series kit introduced in 1993.


I wonder where the nosecone for the Python came from, the odd shape with at least 5 different conical shaped portions took quite some time to accurately draw for the RockSim simulation and 3D print. I think this is a great looking kit and I am trying to figure out what scale model I might be able to use the nosecone for now that I can easily print them.

teflonrocketry1 06-22-2018 09:35 PM

Quote:
Originally Posted by Gus
HOLY COW!!!! Bruce, how the heck are you? So great to see you posting.

Folks, for those who don't know Bruce, he's the KING of rocksim. Nobody does it better.

Bruce, so good to see you back here!

Steve


Steve,

Thanks for your kind words. I am now retired and have more time for rockets! I have 100's of kits to build, a 2300 square foot indoor workshop (full basement) with a full car sized paint booth. I am getting back into computer simulations and recently found a work around in RockSim so I don't have to learn CAD to generate files for my 3D printers. Currently, I am attempting to modify one of my printers to 3D print nosecones up to 1 meter long and 150mm in diameter; I want to make a scale nosecone for my 4" diameter LOC Precision IRIS.

ghrocketman 06-23-2018 03:27 PM

I think the Python cone came from the AIM-9 Sidewinder kit.

olDave 06-23-2018 08:48 PM

Bingo!
 
Quote:
Originally Posted by ghrocketman
I think the Python cone came from the AIM-9 Sidewinder kit.


Yes it did.

I still have one or two laying around here somewhere.

jdbectec 06-24-2018 07:42 AM

Quote:
Originally Posted by ghrocketman
I think the Python cone came from the AIM-9 Sidewinder kit.

The Sidewinder is BT-55. Although the shapes are nearly identical they are different sizes.


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