- #1
karabiner98k
- 90
- 12
Hello everyone.
I have a RC helicopter (WLtoys V912) that recently had a crash. The main board was damaged and replaced and I got it working again but there is a problem. The main brushless motor is not as powerful as before and I have to apply 75% throttle to keep hovering above the ground. It used to hover with 55% throttle at the same altitude. I don't know whether it is the motor or the ESC that causes the problem but since the ESC is located between battery and the main board, it was probably pressed between the two during the crash.
I think the ESC is faulty but I don't have access to the original ESC for my model. It is rated @ 20A. There is a shop nearby and the owner says that he has 30A ESC and I can use it without any problem because he claims higher A rating won't do any harm but lower than stated rating would lead to overheating.
This is a 20A ESC:
Is he right? How can I choose the right ESC for my brushless motor (7.4V 4500KV)?
I have a RC helicopter (WLtoys V912) that recently had a crash. The main board was damaged and replaced and I got it working again but there is a problem. The main brushless motor is not as powerful as before and I have to apply 75% throttle to keep hovering above the ground. It used to hover with 55% throttle at the same altitude. I don't know whether it is the motor or the ESC that causes the problem but since the ESC is located between battery and the main board, it was probably pressed between the two during the crash.
I think the ESC is faulty but I don't have access to the original ESC for my model. It is rated @ 20A. There is a shop nearby and the owner says that he has 30A ESC and I can use it without any problem because he claims higher A rating won't do any harm but lower than stated rating would lead to overheating.
This is a 20A ESC:
Is he right? How can I choose the right ESC for my brushless motor (7.4V 4500KV)?
Attachments
Last edited: