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Slim, I will try to answer your question and give you some answers to your problems.
First lets deal with your battery. The battery is probably the most important part of your boat. It contains the energy that is going to propel your boat to great speed. The motor and propeller convert that energy into a useful force to propel the boat. A 15C battery is not going to give you enough power in a short time to be of any use. Buy at least 25C or 30C if you can afford it. Speed costs money, how much do you want to spend? That is what it all boils down to. Be careful how many volts you throw at your motor or you risk damaging your battery, speed controller or motor. What motor are you running and what speed controller are you using? Prop size will also be another thing to watch. As you know motors and speed controllers are designed to run within certain boundaries. I run my Mr. Krabs on 14.8 volts and it is running just a shade under 70 mph and there is more speed to come with the same battery. If I throw more volts at the motor I will go faster but not for long as something will cook.
You need to throw those plastic props in the pond and buy some good brass ones or failing that some Carbon Fiber ones. I find the Carbon Fiber ones do not last long either. Do you know you can buy all the parts you want on this site? OSE has a shop and Steven is a great guy with excellent service. His prices are good and he delivers all over the world. When we know the motor and esc I am sure many will suggest some brass props you can get from Steven that will suit your setup.
Turning should be one of the boats strong points. My boat turns so sharp it has been know to disappear up its own stuffing tube. What length is the rudder and where have you placed the turn fin? Can we have some pictures of both rudder and turn fin and that will help us all see the problem?
You can run Lipos in either series or parallel.
Get back to us with the answers to the questions that I asked and some pictures of the turn fin and rudder area and we will have your Mr. Krabs going faster and turning better than you have ever seen. This is a hull that will turn and does not mind race water.
Paddy
I will edit this in. Where is your center of gravity?
First lets deal with your battery. The battery is probably the most important part of your boat. It contains the energy that is going to propel your boat to great speed. The motor and propeller convert that energy into a useful force to propel the boat. A 15C battery is not going to give you enough power in a short time to be of any use. Buy at least 25C or 30C if you can afford it. Speed costs money, how much do you want to spend? That is what it all boils down to. Be careful how many volts you throw at your motor or you risk damaging your battery, speed controller or motor. What motor are you running and what speed controller are you using? Prop size will also be another thing to watch. As you know motors and speed controllers are designed to run within certain boundaries. I run my Mr. Krabs on 14.8 volts and it is running just a shade under 70 mph and there is more speed to come with the same battery. If I throw more volts at the motor I will go faster but not for long as something will cook.
You need to throw those plastic props in the pond and buy some good brass ones or failing that some Carbon Fiber ones. I find the Carbon Fiber ones do not last long either. Do you know you can buy all the parts you want on this site? OSE has a shop and Steven is a great guy with excellent service. His prices are good and he delivers all over the world. When we know the motor and esc I am sure many will suggest some brass props you can get from Steven that will suit your setup.
Turning should be one of the boats strong points. My boat turns so sharp it has been know to disappear up its own stuffing tube. What length is the rudder and where have you placed the turn fin? Can we have some pictures of both rudder and turn fin and that will help us all see the problem?
You can run Lipos in either series or parallel.
Get back to us with the answers to the questions that I asked and some pictures of the turn fin and rudder area and we will have your Mr. Krabs going faster and turning better than you have ever seen. This is a hull that will turn and does not mind race water.
Paddy
I will edit this in. Where is your center of gravity?
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