How to make a toy submarine

Brainergiser
Brainergiser
562.9 هزار بار بازدید - 10 سال پیش - Here is step by step
Here is step by step instructions on the construction of a underwater toy submarine. Its propeller get switch on a regular interval. When the propeller rotates, it goes underwater and float back once the propeller gets switched off.
10 سال پیش در تاریخ 1393/12/10 منتشر شده است.
562,953 بـار بازدید شده
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