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Alright, If any of you have followed or seen GPS Drift, an excel spreadsheet that helps you predict the landing location of your model and high power rockets. I wrote it back in 2021. @MarsLander recently reached out about a weathercock addition to the sheet. This was added and released -...

Came across this tonight. Looks like a reasonable approach.

Hi everyone, Wanted to throw this on this board as well to hopefully get a few more eyes on it. I have put together some kits of an old classic long out of production Estes kit. I have about 5 kits left. Couple links below to the original thread with some discussion and pics of the parts, as...

Alright, I've waffled over this for long enough... Over the last couple years I've been slowly putting together a Crusader Swing Wing clone. Originally designed by Estes in the late 1980's, and only in the catalog for a couple years. My dad had one when I was a young lad that I was obsessed...

I purchased some used snap ring style cases. Not sure brand/home made. The forward end of this 38mm 4 grain case has a pretty good ding. Will need to file and clean up before using at the very least, as I would be concerned about the o-ring being damaged. Mostly concerned with the end margin...

Hi, Looking for some 54mm snap ring style cases. 2 grain, 3 grain or 4 grain. Shoot me a message with offers. Thanks, Dave

Up for sale, my Raven 3, Serial # 2439. Has less than 10 flights on it. Great condition. Asking $125 shipped to lower 48, Paypal Friends and family preferred. Shoot me a message to work out details. Thanks for looking! Dave

Hey Everyone, I have an unassembled Eggfinder mini, Rev A7 - older and an Eggfinder RXUSB dongle). Both sealed and unopened. These were my Dad's, he never got around to building them. Would like to sell together - Asking $65 total, including shipping to lower 48, paypal friends and family...

Up for sale is my entire collection of Eggtimer GPS kits and assembled transmitters, including a LCD GPS + Voice Module in custom 3d printed enclosure that works very well at the field and is easy to maintain. Also have a TRS that's only flown once. I love the Eggfinder GPS solutions, but I am...

Hi all, I've got something cooking for an altitude record attempt for Tripoli. Looking into approved altimeters, I came across the following: 2.0 Rules and procedures 2.0.1 Flights less than 30,000 feet MSL: TRA flyers may use any commercially manufactured, barometer based altimeter for their...

Hi, I remember a while back coming across a site that listed all the various Estes/other companies model rocket designs past to present with the names of the designers. I can't seem to find it now. Does anyone know what I'm talking about and could possibly provide a link? Thanks, Dave

When testing motors in snap ring cases, what part of the motor should take the load, the forward closure or the case? Thanks, Dave

Hi, I flew a defense safety siren/screamer yesterday to aid in locating the rocket. It was attached to the harness and devised in a way that once the harness went taught, the pin would be pulled activating the siren for all to hear. The one I am using can be seen in the link below: Link to...

Out of a desire to understand a little more where my rockets could potentially land leading up to the launch, and the morning of launch. As well as predicting where anomalous flights may go(main at apogee failures anyone?) Especially after having treed a couple rockets in my close flying circle...

Hi, There was a thread from a couple years back from a guy doing some experiments with extreme performance minimum diameter rockets without tip to tip layups, or any other fancy techniques. I believe the thread was an intermediate effort into a larger scope project. I can't for the life of me...

Anyone get an order recently from Ed at Prairie Twister? I inquired last fall with them and they were shipping at that time. For whatever reason, I'm just getting to putting an order in with them. I haven't gotten a response to my inquiries this time around. Thanks, Dave

Hello, I have for sale a fully built Eggtimer TRS. $70, plus shipping, Paypal Friends and Family. Only flown once or twice - works well. This is the same price as a kit in the last year's Eggtimer holiday sale. Thanks, Dave

I have a Dr. Rockets 54/1706 Complete Motor hardware set available. - Case - Fwd Closure - Rear Closure - Seal Disk Everything in Fantastic condition, minus a nick on the Fwd Closure. Blemish does not affect assembly of the motor in any way, and does not appear inside the smoke well of the...

Hi All, Happy New Year! I just finished wiring up my avionics bay for my current build. It's a pretty stock Madcow Super DX3 using a Raven V3 for the flight controller. I wanted to give everything a full test with e-matches to build confidence in my system. I am using the Raven in it's...

Hi, I'm wondering if anyone has any thoughts on using these to wire their altimeters? They are a type of lever nut made by Wago. I received a few as samples from a demonstration the company did at my work place. I'm amazed at how secure they hold wire. I was thinking of using...