38, 29, 24, 13?

[McKailas Dad]

Hanger Queen? What would be the point of building a rocket and to NOT fly it?

So far it's been launched 3 times. Its maiden flight was on A10-3T, and jumped off the pad nicely.

This is my first 13mm build, and it seems heavy at 21grams. It simd at 516ft on OpenRocket, but that seems a bit optimistic. Rex, Chad, any estimations?

I am using a mylar streamer, which deployed perfectly on its first launch. But, of course, at our last Woosh launch, it was a bit shy and didn't want to unroll the streamer. I guess it was a nose blow/tumble recovery. Like Rex said, no damage.

I'm just guessing, but wouldn't a real carbon fiber be heavier than this? I would like to try a single layer CF wrap over a cardboard tube. Would that work? How many layers of just CF would it take to make a tube this small?

I've seen small diameter CF tube, but it is too thick walled to be practical.


Yes, Jim, matching up the seams was difficult, as I knew it was a one shot deal. This was my first attempt at a wrap, and it was pretty nerve racking.

The fins were sorta hard, but to line up the long strips straight on the BT was a bear. I drew a full length line for reference to lay it evenly. The seam is not overlapped, they are butt seamed. I didn't want the 'bulge' of an overlap.

The nose cone took a looong time. I first attempted to use my hand drill as a makeshift lathe, but didn't work so well.

The hole was drilled, and filled with a short piece of dowel to chuck up to the drill. I didn't drill the hole straight enough, and it had too much wobble to work. I ended up hand carving, whittling and sanding to finish it. To make sure it was not crooked, I slid it into a BT and rolled it, and sanded down the high side. This is also my first home-made balsa NC, and I learned on the fly!

I'm pretty happy on how it turned out, other than the spots where the decal lifted, which have since been repaired.

I appreciate all the compliments. I am planning an 18mm version, too, maybe I'll do a build thread on that if you are interested...?

[Rex R]

for something that size, using mini engines...you really need to watch the overal weight. use of balsa fins, 15-18 lb paper instead of 20 lb, sparing use of white glue etc. one might reconsider those wraps and use monokote instead (a tenth of a gram here another tenth there it all adds up ). although for something that size 800' is pretty good. try simming it with an A3-4t engine.
rex

[MarkII]

500-600 feet is about the highest altitude that you would ever WANT to reach with a mini motor rocket; 800 feet is really pushing it. If the rocket is small enough and slippery enough to get all the way up there, it will most certainly be well out of sight.

[McKailas Dad]

Rex, I simd it with a A3-4T and got 549ft. I had assumed by the numbers that a A10-3T was more powerful, but I didn't consult the thrust curve graphs.

I've only launched a few T motors. The first 13mm I had was a 'birdy' from Rex, this rocket is my second...

Does anyone still make B and/or C 'T' motors? Who?

OR sims it at 1968ft and mach .61, with a C6-10T

Maybe 1236ft on a B7-6T?

Yea, like I would ever see that rocket again!

[MarkII]

Does anyone still make B and/or C 'T' motors? Who?

No, not in many years. Apogee was the last company to make them. They were already long OOP when I became a BAR in 2004.

[Adrian A]

A 13 will not hold a parrot. An 18mm body tube will hold a parrot but the coupler likely will not. The parrot is 15.24 mm without a battery. I have seen it done but it is not easy.

The Wren would likely fit easy but neither would come close to fitting in a 13 mm.

A Parrot does fit into an 18mm coupler. Heck, it fits into an 18mm nosecone almost all the way, if you take the terminal block off and do a little judicious sanding..