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Yeah, I know this question has been asked a million times, but I'm always looking for a new and more novel method of doing it. There just has to be an easier way folks. As an intro, the way I've done it, with my large L2 and L3 builds, was to simply route out the fin slots all the way to...

So after returning to the hobby after 8 years - I checked my explosives magazine and found I have almost 100 Aerotech reloads that were never used. I have G, H, I, J, Ks, and a few L's. Are these still good after 8 years, or throwaways at this point? I know Black Powder will last nearly...

Good morning, I wanted to see if anyone could provide me contact information for doing HPR certification (NAR) at MDRA. I see a number of contacts on the MDRA website, but unfortunately, there are no email addresses or phone numbers. I have also used the web form, but I have not received...

This was one of my prized projects just never had time to finish. Its a Polecat 10" Nike Smoke Kit But completely modified and customized. Features: - (4) four 75mm Motor Mounts - Custom Machined and Anodized Motor Retainer (designed for use with Aeropack retainers) - All Tubes are...

Cleaning out the magazine . . . FOR SALE AMW J230SK $20.00EA (Skidmark) qty 5 AMW 195WT $15.00EA (White Lightning) qty 2 AMW K555SK $35.00EA (Skidmark) qty 2 AMW J357WW $20.00EA qty 1 AMW 1080BB $50.00EA qty 1 AMW L777WT $50.00EA qty 1 PICK-UP ONLY - I WILL NOT SHIP...

Times are hard and looking to sell some things, plus not really pursuing the high power part of this hobby anymore. FOR SALE Accept Money Orders, CASH (if you pick up in person), or Paypal (add 3%) Rouse-Tech Monster Motors Casing 75/6400 Serial # 0008 08-06 Used only 1 time for my Level 3...

Well, i had my recent renewal inspection with my ATF agent for my magazine, and he informed me that there are ongoing discussions going forth as well as a briefing he just had that they will be going back to regulation APCP in the not-too-far future. Not sure exactly what that means . . ...

Can anyone recommend any laser cutting services that would cut custom-sized centering rings, etc. . . .? I'm looking to have centering rings cut (not necessarily for rocketry), in quantities of 100's, and trying to find the best place or method to have this done. Thanks

Just got word from Mike at MJG Technologies (makers of the J-tek, M-tek), that they are most likely not going to manufacturer ematches with removable shrouds anymore due to new regulations. The ematches will permanent shrouds. Dan

Complete Rocket Tracking System Excellent Condition - Used only once and worked perfectly Includes: - Beeline 70cm Standard Package (Transmitter, Charger, Whip Antenna, Battery, Software, Computer Adapter for custom programming) - Yagi Antenna 7-Element with Coax Connector - Coaxial Cable...

BRAND NEW MEAS M5151-000005-01KPG Pressure Sensor Perfect for EX-Motor Characterization Accurary 0.25% Port Size: 1/4" NPT Supply Voltage: 30V Max, 9V Min Max Pressure: 1000psi Asking $100.00 (plus $10.00 shipping) These retail for about $150.00 New...

Completed first successful ground test of our booster ground separation. Works beautifully and the mounting is rock solid. Plan to launch probably in winter / spring 2009. Main motor will be M650W with (2) K550W boosters. The K550W's will be airstarted immediately upon upward motion of the...

After being puzzled for some unknown reason after watching Superman II, i decided to watch it again and this time realized what it was that was puzzling me. There is a scene where Lois Lane believes Clark Kent is superman and to prove the point, she points a gun loaded with blanks at Clark...

Anyone have any good tips on how to SECURELY attach rail buttons (1010 type) to an existing rocket design - in particular one where you have no access to internal portion of rocket (i.e. fin can) For new designs, i always use a wood block or some other backing piece with 1/4-20 threaded...

Received an email from Paul Robinson (of AMW) this morning, so I'm not sure if many of you heard this, but Paul was recently diagnosed with terminal stage 4 Pancreatic Bile duct cancer and is scheduled to start Chemo this week. This is quite a shock and my thoughts and prayers are with him...

SoJARS South Jersey Rocket Launch Saturday, March 21st, 2009 More details visit: https://www.sojars.org Come on out and join us!

I don't have any experience with triggering of accel switches or break-wires for in-flight timers, but for those of you who have already done this, what type of filtering are you using on your inputs to protect against noise / nuisance, or fault trips? Going to use a simple RC and it will be...

Does anyone have the full name / email of Lee, who built that crazy super nice Nike Smoke cluster rocket? He had a really nice build thread going on here on the old forum. Thanks Dan

Does anyone know which cross section rocksim uses when it calculates static stability? For example, if i have a rocket with (4) fins, but also with (2) external boosters which are offset from the fins by 45 degrees, which cross section does rocksim use to calculate the static stability margin?

Anyone else have any problems with the grains of a 75mm motor case (Aerotech) not fitting the liner? Trying to build this motor now, and the grains go in about 1 inch and then are stuck. Not sure what to do. I'm certaintly not in the mood to sand the grains right now to make them fit nor am...