2 Blackpowder Rockets

[Pyrostar]

Hi all

I made nice and succesfull blackpowder rockets, filled with silver stars.
A few dimensions:

10,5mm ID
2" long tube
1" deep core
2,5mm noozle ID
Very fast blackpowder was used as a propellant.

Silver stars consisted of:

40g KClO4
40g german dark Al
10g dextrin
+ blackpowder prime

The videos:

http://youtube.com/watch?v=Ph1fOQasjQs

http://youtube.com/watch?v=Kytl07AGjVM

I hope you all enjoyed those rockets!

Pyrostar

[yellowcard]

Nice, you've become much better at pryotechnics !
How heavy was the head ?

[Pyrostar]

Hi


The headers weren´t heavy, usually like 10g, because I used small stars ( they burn very slowly)
in a tube.( 17mm ID, without a breakcharge to get a nice, soft burning of the stars).


Pyrostar

[Pyrofanatic]

Those are Nice Rockets
You can also use 250 Mesh Al so you don't have to waste your Dark German, And The 250 Mesh Compo you can also use Kno3 instead of KCLO4.
Al 49%
KNO3 41%
Dextrine 6%
Sulphur 4%

But these stars need a Mp priming to ignite better.

[mr.stijntje]

Only MP priming is not always enough here.. Better use 50/50 meal/silver composition. (the one pyrofanatic mentions)

As for the aluminium, try mixing two types. I'm having nice results with 40% dark and 60% 250# aluminium.