Frustrated

[kfxguy]

I

Jay(Fluid), is the guy to answer that. The short answer is I believe it should be doable on 4s2p. We have 4s oval race hydro's that can go 65mph. It's all about Amps, Props, how much hull is in the water, but I would think it would be doable for sure. Since your limited on volts(14.8) you need a lot of amps(really good ESC) to generate the horsepower. Watts = Volts X Amps. Helps to have a very efficient motor that is not wasting energy on heat. Neu or Lehner come to mind. Etc...

As you prop up to get to 75mph, you have to deal with the amps going up(think 170 - 240 amps, or more..), controlling the heat, short wires are required(resistance), blow overs, really great props...

So many variables to work on, which is the fun part of the hobby. When you have it all just right you get 75mph and nothing blows up, melts, or otherwise self-destructs...easy stuff...haha

Most people, including me when I started this hobby, are looking or definitive list of things to buy or install to go fast. Even if you get a "list" from someone there is still a whole other set of variables to deal with. COG, HULL, Strut Angle, drive line, rudder depth, sharpness, shape of rudders, etc. So two boats with the exact same set up may have a 10mph or more variance. Enough to drive you crazy.

I just built one of these. I should be finished with it today. I have a 4s setup for it that I'm going to put in it and see what it will do. I plan on building a 4s dedicated boat for 70+mph runs. 70mph in this boat is cake. I've built a few singles that do over 70 easily and are smooth running as could be. I choose 6s because the amp draw is lower and it's safer. Here's a couple videos to show the capability of this hull.

Tuning it.

[kfxguy]

I

Jay(Fluid), is the guy to answer that. The short answer is I believe it should be doable on 4s2p. We have 4s oval race hydro's that can go 65mph. It's all about Amps, Props, how much hull is in the water, but I would think it would be doable for sure. Since your limited on volts(14.8) you need a lot of amps(really good ESC) to generate the horsepower. Watts = Volts X Amps. Helps to have a very efficient motor that is not wasting energy on heat. Neu or Lehner come to mind. Etc...

As you prop up to get to 75mph, you have to deal with the amps going up(think 170 - 240 amps, or more..), controlling the heat, short wires are required(resistance), blow overs, really great props...

So many variables to work on, which is the fun part of the hobby. When you have it all just right you get 75mph and nothing blows up, melts, or otherwise self-destructs...easy stuff...haha

Most people, including me when I started this hobby, are looking or definitive list of things to buy or install to go fast. Even if you get a "list" from someone there is still a whole other set of variables to deal with. COG, HULL, Strut Angle, drive line, rudder depth, sharpness, shape of rudders, etc. So two boats with the exact same set up may have a 10mph or more variance. Enough to drive you crazy.

I just built one of these. I should be finished with it today. I have a 4s setup for it that I'm going to put in it and see what it will do. I plan on building a 4s dedicated boat for 70+mph runs. 70mph in this boat is cake. I've built a few singles that do over 70 easily and are smooth running as could be. I choose 6s because the amp draw is lower and it's safer. Here's a couple videos to show the capability of this hull.

Tuning it.

[kfxguy]

Here's a 7s pass.

[kfxguy]

Here's a typical 6s pass. This is a very basic setup. Seaking 180. M645 octura prop. And a neu 1521 motor.