| Subject | Date Asked | Expert |
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| Wire Gauge | 11/14/2009 | Dave Landgraf |
Q: What is the gauge of the estes igniter. The larger side pieces. Or What is the best gauge to use ...
A: I don't have information handy on the size of the side conductors, but the Estes-type igniters ...
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| rocket nozzle | 10/27/2009 | Dave Landgraf |
Q: I made a rocket nozzle with PVC end cap with pop(plaster of paris) filled in for converging and ...
A: Veerendra, It sounds like you have started a very ambitious experiment. I hope you are using good ...
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| attaching fins | 10/10/2009 | Dave Combs |
Q: I'm a middle school teacher who is starting a rocket club at my school. I have been building a ...
A: First and foremost, CONGRATULATIONS and well done to you for starting a rocketry club at school! ...
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| Bottle Rockets: Fin Location V. Altitude | 10/9/2009 | Dave Landgraf |
Q: How does the fin location of a bottle rocket affect the altitude of an one? ...
A: Dev, I am guessing that when you say "bottle" rocket you mean the kind made from a big plastic soda ...
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| gluing fins to rocket | 10/7/2009 | Todd Panico |
Q: I'm a middle school teacher who is starting a rocket club at my school. I have been building a ...
A: You have to attach one fin at a time and wait for it to set up (about an hour) while watching to ...
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| Number Of Rocket FIns VS Altitude | 9/29/2009 | James Bell |
Q: James my question is that "How does the number of rocket fins compare to the altitude?" and also ...
A: Bobby - The main purpose of tail fins is to stabilize the rocket as it flies through the air. The ...
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| level 3 certification | 9/28/2009 | James Bell |
Q: I'm planning on getting my level 3 cert bit later this year,what is the most cost effective way of ...
A: Donovan - I really can't speculate on how well your smoking tracker might work. The design looks ...
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| rocket matirails | 9/28/2009 | Dave Landgraf |
Q: what are som good materials ror body tubes and fins out of commen household items?
A: You can make your own body tubes from several different paper materials, and a few plastic ones. If ...
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| rocket homemade launch pads | 8/30/2009 | Dave Landgraf |
Q: Dave, for Cub Scout pack in arlington Tx, do you have plans for making the pad and the electronic ...
A: Tim, I believe there are plans for a simple launcher on the NAR (National Association of Rocketry) ...
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| kit modifications | 8/25/2009 | James Bell |
Q: I have a kit for a Mean Machine and would like to make it one body tube section shorter (18"). ...
A: Kerry - With the exception of some additional fin area, the Mean Machine is not much more than a ...
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| Hey | 7/31/2009 | Dave Landgraf |
Q: I was wondering, where can i buy cheaper A6-4 rocket engines? I love to launch rockets but its ...
A: Manufacturers of model rocket kits are usually pretty good about giving you several rocket motor ...
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| Hey | 7/30/2009 | Dave Landgraf |
Q: I was wondering, where can i buy cheaper A6-4 rocket engines? I love to launch rockets but its ...
A: Everyone would like to know where to buy motors at lower cost! It is going to take a little looking ...
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| Hey | 7/30/2009 | Todd Panico |
Q: I was wondering, where can i buy cheaper A6-4 rocket engines? I love to launch rockets but its ...
A: Unless you can buy alot of them locally. The bulk packs are the cheapest per engine. Finding a club ...
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| Hey | 7/30/2009 | Dave Combs |
Q: I was wondering, where can i buy cheaper A6-4 rocket engines? I love to launch rockets but its ...
A: A6-4 engines are only produced by Quest; this makes them a little harder to come by (Estes BY FAR ...
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| Launch Sites in Fort Worth | 7/19/2009 | Dave Landgraf |
Q: Dave, In searching the web, I came across a post where you were looking for launch sites near Fort ...
A: I am really sorry to have missed your question. I sure don't want you to feel ignored! If you live ...
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| Model Rocketry | 6/23/2009 | Dave Landgraf |
Q: How does weight effect altitude on rockets, and can you give me sites pertaining to your answer or ...
A: In general, a heavier rocket moves more slowly and does not fly as high as a lighter rocket when ...
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| Model Rocketry | 6/23/2009 | James Bell |
Q: How does weight effect altitude on rockets, and can you give me sites pertaining to your answer or ...
A: Bobby - I'll do you one better. Download the following program ... ...
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| Model Rocketry | 6/23/2009 | Dave Combs |
Q: How does weight effect altitude on rockets, and can you give me sites pertaining the answer?
A: While it's easy to simply say "a heavier rocket won't go as high", the real answer lies in finding ...
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| Hey | 6/19/2009 | Dave Landgraf |
Q: I was wondering, where do you buy A6-4 Rocket engines? Cheaper Online its around 5.50-6.00$ Where do ...
A: Alex! Prices on model rocket motors have been increasing recently in many parts of the country. ...
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| Hey | 6/19/2009 | Dave Combs |
Q: I was wondering, where do you buy A6-4 Rocket engines? Cheaper Online its around 5.50-6.00$ Where do ...
A: 1. They will usually be cheapest online, even after shipping cost is included. 2. Quest is the only ...
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| Starter | 6/18/2009 | Dave Landgraf |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: Yes, that Astra set does look like it is a "starter special" with all the other equipment you need. ...
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| Starter | 6/18/2009 | Dave Landgraf |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: Alex, I'm not sure that the Astra kit is anything more than just a model rocket kit. The price and ...
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| Starter | 6/16/2009 | Dave Landgraf |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: Wow! I am impressed with your enthusiasm! You picked a great hobby, and you sure have started off ...
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| Starter | 6/16/2009 | Dave Combs |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: First, let me say I'm glad you're getting into the rocketry hobby; you're going to enjoy it. The ...
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| Starter | 6/16/2009 | James Bell |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: Alex - Model rocketry is a great hobby, and you will quickly get hooked. My first was an Estes Big ...
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| Starter | 6/16/2009 | Todd Panico |
Q: hey! I'm starting model rockerty And i was looking at some rockets and stuff This is what for sure I ...
A: The Starhawk Kit will be easier to build as it has a plastic fin assembly. The wadding goes in ...
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| 3-finned rockets | 6/14/2009 | Dave Landgraf |
Q: I am building a 3-finned rocket and I was wondering how to precisely install the fins so that they ...
A: Before you give up on using the old "eyeball" method, you really should give it a try sometime. If ...
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| building a bungee rocket | 6/2/2009 | James Bell |
Q: Bell, I am 10 years old in 4th grade. This year, all of the 4th graders will have a contest to ...
A: Isabelle – I must say, in all the years I have been answering questions, most are sent to me in a ...
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| rockets for 8yo? | 5/7/2009 | Dave Landgraf |
Q: I have a son who is turning 8, and we are looking for a fun idea for his birthday party. Is there ...
A: Wow, Melissa, you have picked one of the best parent-child hobbies you could find. You can keep it ...
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| Cluster 25%N total impulse | 5/2/2009 | James Bell |
Q: ...since then i have been shooting rockets to 5600feet its my personal best so far ...and im working ...
A: Donovan - I am a huge fan of using electronics to assist me in a successful launch and recovery. I ...
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| Igniting E-engines vs A-D engines | 4/25/2009 | Dave Landgraf |
Q: I read a response here: http://en.allexperts.com/q/Model-Rocketry-2312/E-engine-ignition.htm I ...
A: You may not realize it, but you have asked sort of a "trick" question. The other answer (about ...
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| stages vs. clustering | 3/25/2009 | Dave Landgraf |
Q: I am currently working on a model rocket competition for my honors physics class. The competition ...
A: It sounds like you have a pretty fun physics class! I wish we had done some of this sort of thing ...
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| model rockets | 3/23/2009 | Todd Panico |
Q: how does weight effect a modal rocket ANSWER: Hello Alex - The weight of a model rocket will effect ...
A: Placing the weight in different spots will not really effect the speed or height the rocket will go. ...
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| model rockets | 3/23/2009 | Todd Panico |
Q: how does weight effect a modal rocket
A: The model rocket engine has a certain thrust. The engine has to create more thrust than the rocket ...
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| Cluster | 3/18/2009 | Dave Landgraf |
Q: I have a two engine cluster model in a BT-60 tube that is 34"long. I plan to launch it using a C6-7 ...
A: You do not have to worry at all about over-pressurizing the BT60. Go right ahead and use a pair of ...
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| a multistage cluster rocket | 3/10/2009 | Dave Combs |
Q: I have been flying single stages with my kids recently, and have even designed a couple of ...
A: You ask a number of good questions. I'll try to break it into parts. First, for the pertinent ...
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| 3 Vs 4 fins | 3/9/2009 | Dave Combs |
Q: Im just trying to figure out whats better about using 3 fins and whats better for using 4 fins.
A: The simple answer: There really isn't much difference. The complex answer: The purpose of the fins ...
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| newtons ???? force and thrust | 1/25/2009 | Dave Landgraf |
Q: i am building a prepackage rocket and it talks about lbs of thrust...and i am not been able to find ...
A: If you are asking about model rocket motor thrust, most blackpowder motors (like those made by Estes ...
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| Performance of ESTEs NOVA PAYLOADER | 12/4/2008 | Todd Panico |
Q: Todd, for my 6th grade science project I built two Nova Payloaders inverting the fins on rocket #2. ...
A: how many flights did each rocket make? If they flew a couple times each and the results were ...
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| rocket fins | 12/3/2008 | James Bell |
Q: What do you think would happen if you moved the fins on a rocket to the top, middle, and bottom?
A: Devon - Rocket stability of one of the basics of rocketry design you need to have a good grasp of. ...
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