Caveman B9-4 (12 mm)
Caveman B9-4 (12 mm)
Prijs:
€ 3,28

Can be compared with the Estes B4-4, slightly higher peak trust than the B4-4 more burn time.

small scale models , that weight a bit more.

B9-4

Dia 12mm

length 50mm 

impulse 4.75 N/sec

peak trust  8.9 N

Trust time   1.85 sec

Delay time 3.9 sec

fuel mass  2.5 gram

These  engines are made in Poland for many years. And now Cavemanrocketry will take them to the rest of europe.

The engines come in two types black powder and composite. These engines will give you the best bang for the buck you can imagine.
Dit artikel is op 21/09/2005 toegevoegd.