"hello I'm interested in the subjectI was thinking of using a gasoline engine for aircraft that develops between 4 and 5 hpwhat do you think?"

"hello I'm interested in the subjectI was thinking of using a gasoline engine for aircraft that develops between 4 and 5 hpwhat do you think?"

"Hi, i want build a hybrid drone but have a problem for the motor brushless.
It i have a 200kv at 8000rpm i have 40volt, but not know the amp
Can you help me?"

"Hi , can you help me for build a hybrid drone?"