Search results

I prefer to pre-paint the fins before attaching to the BT. I mask the base of the fins before painting, then sand lightly after to get a flattened balsa surface with no paint on them. Has anyone had any luck pre-painting the tube, then gluing the fins to the painted BT surface. It would...

I understand how the stability of a rocket is calculated. The distance between the center of gravity (CG) vs. the center of pressure (CP) is measured in body tube width, or caliper. I gather 1-2 caliper is optimum for low powered rockets, with the CG being forward of the CP. When a rocket...

I've been pulling my hair out trying to get open rocket to run on my new PC. I've downloaded the latest Java, and even had it checked by Java to verify it has been installed. I then ran trouble shooting for different possible problems, security, browser enabled, etc. Still won't work...

I can't seem to get open rocket to run. I've downloaded the latest Java to my computer, then downloaded the zip file, unzipped it. But for some reason I can't get it to run, any ideas?

Is anyone familiar with a method to help get a visual on a rocket when it begins it's recovery stage? Some of my rockets literally fly out of site, at least with my eyes. I know it has ejected, and thus begins the panicky search to find it as it descends. I read somewhere about adding...

I'm planning to gap stage a couple of rockets with dissimilar motor tubes. The first stage will use a D motor (24mm/B-50), the second stage will use a C motor (18mm/B-20). Both will be housed in a B-60 sized body tube. Because they are dissimilar sizes, the B-50 will fit over the B-20, with...

Hello, I'm planning on building a few staged rockets from scratch (black powder) One of them will be 'gap staged', so I need a longer motor tube for the first stage gasses to reach/ignite the second stage motor, perhaps 6"-10" away. My question: Can one just use a body tube for the...

Regarding design of rear ejection, there are some tricky components I'm not sure how to design. 1. How do you keep motor mount from sliding up to bulkhead, if not extending the motor mount tube to the bulkhead. 2. How do you attach the kevlar string to the motor mount? Tie it around? Tie it...

I am planning on building a payload rocket purely for making video. One thing I want to do is eliminate roll of the rocket at takeoff, even at the expense of altitude. Anyone have any general tips on roll elimination/reduction for rockets. Larger fins? Using dowels instead of fins, or a...

Is anyone familiar with how one might couple different sized tubes together. Possibly for an over sized engine housing area below a narrower tube, perhaps for a first stage, or even just to create a tapered rocket. From what I've seen there are ready bought couplers for attaching tubes of...

I am planning on building some scratch rockets that utilize clusters, and for the time being I'm planning to stick with black powder engines, 18-mm and 24-mm. My question is, how reliably can black powder engines be ignited to exact or same time? Assuming the best igniters and ample ignition...