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Apogee Rocketry Workshop #354:

Repair a Broken Through-the-Wall Fin - Method 3

Advanced Construction Video

I previously presented two different methods of repairing a through-the-wall fin that had popped out of its slot. In this video, I'll show you a third method that you might try. I call this the "Turkey Baster" method, because we're going to squirt epoxy into the back end of the rocket using a syringe.

Is this technique any better than the other two? Probably not better... just different. I present it because I want to give you different options, so that you can pick the repair method that is most comfortable for your skills and the tools/materials that you have to work with.

View this week's Rocketry Workshop Videos (Duration 15 min, 13 sec)

Previous videos are found on our archive page.

 

Fin Alignment offer

Fin Alignment offer

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Newest Products From Apogee Components

Check out the latest products to hit Apogee's shelves!

Estes Vapor

Estes Vapor

This Estes Vapor flies like a hypersonic missile. It is screaming fast thanks to its low weight and versatility in using a variety of rocket engines. If you like a speedy rocket that vaporizes into thin air when launched, you'll love this rocket.

But don't blink when they push the launch button that sends the rocket skyward - or you may only see the smoke trail that was left behind. Make sure you have a whole bunch of friends with you to help you spot the rocket in the sky, or you may never see the rocket again. Get one today, as they are vaporizing off our shelves too.

Estes Mean Machine

Estes Mean Machine

The Estes Mean Machine is a legendary rocket that is taller than your average center on a college basketball team. It is 6-foot-7-inches tall (79 inches), and is a skyscraper when you put it on the launch pad. It towers over everything else on the range. When people ask you what is your biggest rocket, you can pull out the Mean Machine, and they'll be impressed. You don't have to be high power certified to fly big rockets. You just need the right big rocket...

Semroc Scissor Wing Transport

Scissor Wing Transport

The Scissor Wing Transport is a novel design that looks much like an ordinary rocket on its upward ascent. But at ejection, the motor pop-pod slides out of the tube to descend on its own streamer. While that happens, the wing on the main part of the rocket pivots to a horizontal position, and allows the rocket to come down to the ground in a glide configuration. So it has an awesome boost, and a nice gentle glide as it returns from its mission. This is a reproduction of the old Estes kit from the 1970s.

 

Make Carbon Fiber Tubes

Make Carbon-Fiber Tubes

Here is an extensive and detailed video course on how to make Ultra-Lightweight Carbon-Fiber Rocket Tubes. They're so light, they give you an unfair advantage in competition. These are the ones that my daughters, Allison and Ashley used in Romania last September at the 2021 World SpaceModeling Championships. Allison was part of the senior Silver Medal winning USA team, and Ashley took home the Bronze Medal in the Jr. Division. The girls were taught how to make their own tubes, so if they can do it, so can you.

The training course consists of 5 hours and 42 minutes of video instruction, covering everything I know about how to make a successful tube with a glass-finish using a 2-piece mold. It even includes all the secret techniques and materials, and where to buy them, including where to get the 2-part mold.  

This course is on the Udemy website, not at Apogee Components.

 

RockSim Live Training - Every Friday

 

Launch of the Week

Are you going to NARAM this summer? This week's simulation is of the Apogee Midge rocket kit in a B-engine Payload-Altitude contest event (not an event this year). The launch site chosen is the NARAM contest field in SW Missouri. It's time to get the lay of the land...

Looking at this simulation, I noticed that the rocket weathercocks a bit too much. I don't want to lose altitude by having the rocket travelling horizontally. What would you change in this simulation to get more altitude from the rocket? 

Curiosity... see how far apart the two stages landed. What would you have to do to get them even closer together?

 

Customer Comments

“During Covid, I came across my old rocket range box from my much younger days and decided to introduce my grandchildren to model rocketry. But as I built and flew more and more rockets, I needed more information on how to do things better. So I searched for model rockets and came across Apogee Components. I couldn't believe how much information was available through Apogee: instructional videos from basic to very advanced, and a great selection of kits, building supplies and electronics. With the help of Apogee, I built their Zephyr to get my Lvl 1 and 2 certs, and am working towards my Lvl 3. I really appreciate how much detail is available through Apogee for so many of the items that are available through their website. Now, whenever I have a question for anything regarding rockets - model to HPR - my first stop is the Apogee website - it is well set up, easy to find what I'm looking for and its like having an actual rocket scientist in your corner. Its invaluable.”

-- Jerry Frank

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We're looking for someone to write a definitive guide to selecting igniters, controllers and batteries for rockets. We'd love to have a newsletter article on that topic, because we get lots of inquiries about it. Is that you? Do you know how many e-matches can be set off in a cluster by a 3.7v 400 mAh battery? See our Newsletter Guidelines on how to submit an article on this topic and get paid up to $350 for your time. 

 

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