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URRF 7 - The "can't miss" Rocket Festival of the Northeast! Waiver up to 18,000 ft. Register here: https://urrf.us Home of URRG - Potter, NY.

At yesterdays launch a flyer presented his rocket for an l2 cert. it was 80inches tall, 4 inch diameter, 3 fins , each 4 inch square. The OR sim had a 2.4 caliper stability, with the cp 26 inches from the bottom. 13:1 thrust ratio. On paper it looked ok...but the collective experience of the...

Our next regular club launch is "Apollo" Weekend - July 20-21. See Your in Potter, NY! What Will you be Flying? 52845297_10157386852194924_2389581277914202112_n by spence posted Jul 8, 2019 at 12:30 AM

I suspect the answer I will get...but here goes..... I have just built a 4 inch diameter ebay for a cardboard sided rocket, i I also have a 4 inch diameter fiberglass Rocket Can i use the cardboard 4 inch ebay in the FG rocket? Do you know of anyone who has?

I am helping out a COllege team with their project , but only have experience with Aerotech Motors. Can you help out an answer the following inquiry that I got "For Cesaroni cases, is it normal to epoxy the casing in? In the last rocket we glued threads onto a phenolic tube and then threaded...

Does anyone have experience with Binoculars withg a LAser Range Finder? Might be useful for determining altitude? or determining how far away a rocket is that you can see? The price on these has come way down in recent years - just curious if anyone had tried one? If you did, what...

Does anyone have experience with Range finding binoculars for viewing a launch and getting a good estimate of altitude? If yes, what have you used Sent from my iPad using Rocketry Forum

Guys, know this must of been discussed. What is present view on this device for rocket tracking? Just interested in finding it on the ground. Overall seems much less expensive than than purpose built rocketry gps. Views please....... Thanks Sent from my iPad using Rocketry Forum

Guys- I'm sure this is somewhere in the forum but did not find it. The simple "Remove before flight" pin makes the circuit when pulled. Where can I get that with the proper spring loaded socket? I have not used that in my Electronics Bays yet , but.... I have an idea for a cool night...

Two Dog Barf questions... how much to use? Does the depth of dog barf vary by body tube diameter Or is the answer something like 1.5 inches depth? second.. can you compress the Dog Barf to take up less space? For example if its 1.5 inches “ loose” and then gets packed to .5 inches?

Has anyone noticed altitude differences due to dirty vs clean rails? If do, what impacts have you seen?

While we spend the next couple of months buffing and repairing - It would be interesting to create a list of average flights per HPR in its lifetime? To Start out: My Fleet: (All L1) MadCow 2.6 inch FG Black Brant Built 2016 Flights 7 condition:flyable Major events: 1 engine blow-by, 1...