Pack of 30 engines type B4-4 with electric igniters included.

It is a very convenient package in all those cases where the use of a considerable amount of engines is foreseen, as in school projects and for any educational purpose. It is also ideal if you have multi-motor models (clusters) that you want to launch many times.

The included starters are of the new type, extremely reliable and able to operate with a voltage of only 1.5 volts.

Motors features:

• Diameter: 18 mm
• Length: 70 mm
• Weight (each): 21 gr.
• Total impulse: 5 Ns
• Average thrust: 4 N
• Burn time: 1.3 sec.
• Delay: 4 sec.