John A. Wilke

Congrats to you guys for taking on an incredible project. Sorry it didn't work out this time, but I'll bet you'll be back with another attempt. The coordination of skill sets, schedules, etc. on so...

Guys, next week I'll be bringing in ALL the Performance Rocketry stuff that I have left. Basically, this would be some cones and couplers and some tubes. Kits have all been sold (Thanks!). As I roun...

As a follow-up to my earlier posting, I'd like to try and gauge interest in "built" rockets. I basically don't want to haul them to the meeting if there isn't any interest. I have a couple KestreLs, ...

I wish I could help - my skills are not up this alley. That said - a hearty THANKS to Warren for getting this site to where it is. He's plowed a lot ground that many of us take for granted. First b...

I guess I was a bit shocked at the price tag as well.... nearly double Hubble (and we can't run up there and fix or upgrade like we could for Hubble). Much of this mission is devoted to discerning if...

This is one complicated landing…. This probe was launched today. In early August, we’ll see if the sequence below works. Sure hope so!!!

John, I want to qualify my "you can't push the tubing hard enough to make it fail" comment.... If you have a very tall rocket or a 2-stage that has a bad interstage coupler, all bets are off. That s...

John, I personally NEVER use swivels - but that is a personal choice. For shock cord on a rocket like that, the 1/2" tubular would work great - It is 7,200# test. Shameless plug- you can get that for...

Greetings - Like Warren, I plan to sell a ton 'o stuff at the annual meeting. I didn't fly a single rocket this year, and I'm not planning on doing a lot of flying going forward. I'll compile a list ...

You cannot push either of them hard enough to make them fail (convolute or filament). Convolute is waaaaay easier to drill and sand. That was my story when I was a dealer and I'm sticking with it...

good message, Mike - I tracked down the five guys who are veterans in my office this morning. All the branches of the services are represented in our shop... and I'd say they are absolutely as good o...

My bad for posting in the wrong forum. Warren, any way you could move this to a more appropriate slot? When will the meeting dates be decided? Thanks - J

Is the annual meeting on 1/7/12? I see there is a "?" on the launch schedule -- and it says "1/7/10?" anyway...

There is a LOT of snow out east and it would NOT have been fun. Flyers would have had to shovel snow off the pad to set up. Skipping today was a great call! (Though I'd have enjoyed coming out...)

That is indeed a lot of rocket for less than $200. It is THE WAY to go if you want to do an economical L3 (my biased opinion). After many scratch-built L1 and L2-class projects, I ended up building ...