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Had a strange occurrence yesterday and figured I'd get some groupthink goin on the matter. Launched a rocket using an M1315. Total weight was 37lbs. and simulation altitude would be 11,700'. Wind was gusty up to around 12 mph. Rocket ignited fine, but began to weathercock just after liftoff...

Getting ready to begin assembly of a few CTI motors that will be using Aerotech hardware. I read over the instruction for both CTI and Aerotech, and needless to say, they are a bit confusing. When using the RAS system with spacers, there is a constant reference to the insulating disk and forward...

So, I've decided on a Madcow Terminator for L3. While not being very familiar with fiberglass , i did read the thread on epoxy, and with some West Systems, Rocketpoxy and some 120 grit paper, I feel as though it should be too difficult to get good/strong bonding. The kit came in last week, and...

Quick question for the good folks here. Starting anew build and trying to decide on whether to use 1/4 or 5/16 for the recovery hardware. This will be used in a ~ 25-30 lb. fiberglass rocket. All hardware will be stainless and attachment points will be ubolts. Right now, I was planning on using...

So, I am planning on doing my L2 flight next month, and am in the process of driving myself crazy with motor choices and general failure. I will be using the same rocket that I used for my L1, which is a 3" LOC Iris kit, converted to DD. For L1, I flew it on an I170, and the entire flight was...

I180-SK by richP posted May 28, 2019 at 10:40 AMGetting ready to paint my 3" Iris (DD/extended) and had a few questions for the folks here with infinitely more experience than myself. First would be CG. In the current configuration, with an I motor (most likely for L1), the CG is at 3.93...

Have been lurking this forum for some time, gleaning info on HPR and dual-deployment. Well, I am in the midst of my very first HPR build, and have done my first deployment test this afternoon. The rocket is a 3" LOC Iris that has been extended by 4 inches to make some extra room for a larger...