Yugen-biki

If delayed flashes are unwanted you should try something else than D1. Maby something with Fe(III)O.

I mill everything but the Al in D1 in my ballmill. The Al is about 60µm and works fine. I have found that to coarse Al will not work rather than to fine.

Remember to dry the stars long enough, or else the effect will be lost.

Hello!

You can take two different approaches from here.
One: Manipulate the fuel.
Two: Manipulate the tool.

Don't do the two at the same time because it will be very difficult to know what when wrong or what had desired effect.

A simple and good rule of thumb for BP rocket fuel is 6:3:1 KNO3:C:S. Mill it very fine (untill a dark shade of gray) or else cracks will form and increase the burning area uncontrolled = CATO. If it does not work increase ammount of C by 0.1-1% teps. Don't let S drop below 9-10%.

Start by increasing the nozzle diameter. 1/3 of the case inner diameter is a good start. The spindle should go allmost all the way through the fuel. Just leave a few mm for delay for a topping shell if wanted.

Oh yes. The kind of tubes you are making (spiral) are not as good as just rolling the paper in a parrallell orientation. Use craft paper with home made glue from flour and water (you will find instructions here on the forum). Don't glue the first inner part, or else it will stick to the drum stick. Use a wooden block to roll the tube on the stick on a hard surface to push out air boubbles. Pull of the stick and let dry for a few days. The thickness of the tube should be 5-10mm, guessing from remembering the drum sticks


Good luck!

I have experimented with these rockets for a while. What I found was that the mesh of the MG (or MGAl if you prefer) is very important. The mesh in the comps I found were to coars, but I trusted the formula so I started to suspect the whistle and tools etc. If you use tools from wolter as I do, you can decrease the ammount of whistle and use finer metal in the strobe formula. I went for only 63µm Mg coated with K2Cr2O7 with great success. It does not seem to be important to use salicylate whistle either.
Another project I had were to make a rocket fly with no whistle. If worked but they can't really carry anything. 1lb red strobe rocket made with a whilste tool from skylighter:

Oh yes, one more thing. Testing the comp open on the ground will only tell you if it will strobe or not. The behaviour in the rocket is different. I made funny "multi-firecrackers" with to slow comp (for stars) they did not fly but hovered a meter or two from the grund untill they fell down and continued to go "bang-bang-bang" in the dirt.

Hello guyes!

I'm going to need som tubes for my 4lb BP rocket tool fairly soon (summer/fall). I'm not going to make my own tubes so I'll buy them. I have a some potential companies/persons that can provide tubes but as allways there is a minimum order quantity, and I will never use 1000 tubes on my own. Is there any one here that is interested in 4lb tubes (ID:1,25"; length:12";wall:0,25")?
I'm not really interested in buying other kind of tubes, maby 6lb but not now.

Any one for splitting a shipment of 4lb tubes?
You don't have to pay me on beforehand, I'm just looking to see if there are potential customers. Send me a PM and I'll send you back when I have tubes

/Yugen-biki

Many of you probaly know supreme pyro allready but he will sell you any kind of star plate you whant. Just ask him and he'll get you the diameter you are looking for. He got me a 2mm .

http://www.freewebs.com/supremepyro/