oldfart
Elite Veteran
Location: Vancouver, Canada
My Posts This: Topic Forum | nextstepheli,
I think the key to your ESC burning problem is the gearing relative to the KV of the motor and the voltage of a 6s Lipo pack.
Century and most other reputable manufacturers, give the KV rating of their motors so that you can match the head speed to the voltage (battery pack)you plan to use.
In your case, the motor has a KV of 715, that means for every Volt, you will get 715 shaft rpm. On a 6 cell pack, you have 22.2V x 715 = 15873 rpm.
Your main gear on the Swift has 96T, so a 14T pinion would give you a 6.85 ratio. That means your motor would be trying its' best to swing your mainrotor at 15,873/6.85 = 2317! So even at hover pitch, the wattage required to turn at that head speed would certainly cause something to heat up and burn. In this case it seems to be your ESC. The 14T pinion is for use with the 4S pack not the 6S.
With the 6S pack you will want to use either a 12 (ratio of 8:1) for a rotor speed of 1983 or an maybe even better, an 11T pinion (ratio of 8.73)which will give you more reasonable rotor speed of 1818.
The way you are setting it up the current your blade/rotor speed load is asking from your motor, batteryESC combo is far beyond their design spec.!!!!
The 455 speed control will work fine with a 6 cell Lipo, but not with a 14T pinion!!!!
No wonder you are getting such short flight times |
