Hi Frank,

It could be that the Li-po pack you are using cannot cope with the amperage that is being sucked out of it. I have experienced peculiar behaviour with a Hyperion 3S 1800mAh pack when I tried to draw more amps out of it than it would take - one of the cells puffed. It could also be that your ESC is faulty. I have experienced the exact same symptoms you describe with a bad Thunder Power RC Smart Guide 40A ESC, funnily enough that was with a Park 480 - but it was not the motor at fault.

Have you tried an alternative ESC with the motor? You will also need a battery pack that has sufficient stamina. This you can calculate by multiplying the mAh size by the "C" factor. E.g. 2200mAh 20C (2200 divided by 1000)x20 will give 44A or 1800mAh 25C will give 45A, etc.

If it's not your ESC then I need more informationn: What size of propeller are you using? Have you got a watt meter? What size and "C" rating are your cells?

I have two Park 480's and for both of these I prefer to use 36A and 45A ESC's. A 30A ESC in my opinion is a little small. I know that E-Flite suggest 25A-40A but I prefer to err on the safe side (it's a personal thing).

Hope this helps.

Regards,

Dave