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"Not a Rocket Scientist" had a successful maiden launch a few weeks ago. But the apogee ejection charge for the fin section, which contained a deployment bag for the 8 foot chute, severely charred the bag and even created a small rip in the bag (chute was not damaged). Since the fin section...

Any thoughts a to creating a nosecone for an upscale Big Bertha? If I do this build, I plan to use 8" dia concrete form tubes as I used for "Not a Rocket Scientist". Upscaling the rocket to an 8" diameter would make the rocket 10 feet tall. I'd want to weight the nosecone so that I have no...

Based on "The Far Side" cartoon- 8 1/2 feet tall, 45 pounds, 8" dia. with 12" dia. fin skirt. Successful flight April 15, 2023 with Tripoli Mid-Ohio in South Charleston, OH. Youtube video attached. Check out my other launch videos, including "Marvin Martian Jr" two years ago, at...

Cracked a fin upon landing this 45 pound rocket- it still feels quite sturdy, but flexes a bit compared to its neighbors. What are best practices to repair a crack like this? Thanks!

Wondering if this product is still made, or what is out there on Amazon is old stuff. Any proven alternatives? Should I just buy Elmer's from an Amazon seller & not worry about it? Thanks!

Finally finished the painting of this 1/12 scale Mercury Redstone. 6" dia. Blue Tube construction & almost 8 feet tall. Boyce Aerospace 3D-printed capsule/ escape tower. Stickershock lettering. Took a little liberty as to the positioning of "UNITED STATES" relative to the fin positioning...

The retainer assembly type that screws to the thrust plate. Aero Pack is still on backorder. Just in case you have an extra one you aren't using....... Per the Aero Pack website description: Two-Piece Light-Weight Assembly For 75mm Motor Mount Tubes Precision Machined 6061-T6 Aluminum With...

My version of the Gary Larsen cartoon, "Not a Rocket Scientist". At apogee (about 1,200 feet) this 45 pound rocket will separate into three parts under individual parachutes: nosecone, the long & crooked middle part, and the fin/motor section. the fin/motor section is 36" long and weighs 18...

Here's what I want to do- four (4) sampling port holes for an 8" dia electronics bay which is 13.5" long. I tried to use the calculator referred to below, but it isn't making any sense to me: https://www.rocketryforum.com/threads/vent-hole-size-calculator-spreadsheet.42898/ Also tried using...

Had two JL Chute Releases- this is the last one for sale. Converted my last few chute release rockets to DD. This Chute Release maybe used three times. How High SP Altimeter & reader included for free. $115 with FREE shipping. PayPal only. PM me if interested. Shipment via UPS. (Forgot the...

6" dia. Mercury capsule from Boyce Aerospace. SLOWLY building the dual deploy rocket. Should I at all be worried about the escape tower being broken during the chute deployment events? Would you suggest bringing the capsule down on its own main chute, possibly configured so that it lands at a...

I've been asked to give a presentation to a high school class in the fall. Besides showing a few of my Youtube POV rocket launch videos, I'd also like to present an overview of amateur rocketry & the basic physics involved. Has anyone already created something like this? If you're willing to...

Kicked the pump can over & didn't notice it. About a 6" circle of sticky hardener on the basement indoor/outdoor carpet. Thankfully, I didn't kick over the resin as well! Wiped it up as best I could. What do you recommend to clean up the remaining hardener from the carpet? Thanks!!!!

Includes an aft closure with the system, which is worth $36 by itself + shipping- the best price i could find. This system is for 38/240 through 38/720 case sizes only. Package opened but never used. Of course, I bought all the various-sized cases after purchasing this adapter system. :D...

Just curious- I have used them with 100% success for ejection charges. Wondering if they could be dipped in pyrogen to make for an airstart igniter for 29mm AT reload. Has anyone tried this?

Might just be coincidence, but I now have had two flights with different rockets & different Minitimer 4's where the staging or airstart didn't fire. I had used a Minitimer3 for several staging flights with the one rocket- upgraded to Minitimer4 and staging didn't work. Two weeks ago, tried a...

When I was a high school student, I wrote research papers on "The Krushnik Effect" and "Determining the Efficiency of Ducted Systems in Model Rocketry". I don't think that either of these phenomena had anything to do with my plastic flower pot-turned fake engine bell being ripped from Marvin...

It finally happened- Tripoli Mid-Ohio's Saturday launch at their huge field in South Charlestion, OH was the site. Six feet tall- 65 pounds- four feet wide including fins. Aerotech L1520 "Blue Thunder" 75mm reload. Two Perfectflite StratologgerCF altimeters. Top Flight Recovery 14 foot main...

Made some progress on the build. 8" dia. concrete-forming tubes wrapped with fiberglass cloth & epoxy. Coupler and avionics bay made by cutting down the tube to the appropriate diameter and glassing it with two wraps. Centering rings, bulkheads & coupler bulkheads freehand-cut from 3/8" Baltic...

The other option I'm looking at for my two 6" dia. Mercury Redstone & Honest John projects, for which I already have the custom nosecones & the fins, is to fiberglass phenolic tubing, as opposed to waiting for Blue Tube to restock. From using phenolic about ten years ago, I know it can be...