Hi!

I have recently installed a brushlesss system in my Aquacraft Reef Racer 2. The motor is 2700 kv, and the battery is 3-cell li-po.

It went ok until the half throttle, but over the half throttle, it spins out to the right hand side or flips over.

Thus, I added some weight in the back of the boat, making it sit deeper in the water. Also I shortened the water pick-up from 5 mm to 2 mm to reduce lifting-up effect by the water pick-up.

Now the boat runs ok until 80% of the throttle, but over 80% of the throttle, it begins to badly “ROCK”, and at the full throttle, it spins out or flips over.

I would like to hear good advices from experienced boaters to solve this problem. I am now frustrated.

Thank you for your attention!